/* ============================================================
   PGWSCO – Subscriber Management System
   Meter Reader Portal (PWA) Stylesheet – RTL Persian / Vazirmatn
   ============================================================ */

/* ----- Font Face ----------------------------------------- */
@font-face {
    font-family: 'Vazirmatn';
    src: url('../fonts/vazirmatn/Vazirmatn[wght].woff2') format('woff2-variations');
    font-weight: 100 900;
    font-style: normal;
    font-display: swap;
}

/* ----- CSS Variables ------------------------------------- */
:root {
    /* Color Palette */
    --color-bg-base: hsl(222, 28%, 7%);
    --color-bg-surface: hsl(222, 25%, 11%);
    --color-bg-card: hsl(222, 22%, 14%);
    --color-bg-hover: hsl(222, 20%, 18%);
    --color-border: hsl(222, 18%, 22%);
    --color-border-light: hsl(222, 18%, 28%);

    /* Accent – Teal/Cyan gradient */
    --color-accent: hsl(185, 80%, 50%);
    --color-accent-dark: hsl(185, 80%, 38%);
    --color-accent-light: hsl(185, 80%, 65%);
    --color-accent-glow: hsla(185, 80%, 50%, 0.25);

    /* Danger */
    --color-danger: hsl(0, 70%, 58%);
    --color-danger-dark: hsl(0, 70%, 46%);
    --color-danger-glow: hsla(0, 70%, 58%, 0.22);

    /* Warning */
    --color-warning: hsl(38, 90%, 55%);
    --color-warning-dark: hsl(38, 90%, 43%);

    /* Success */
    --color-success: hsl(142, 68%, 45%);
    --color-success-dark: hsl(142, 68%, 35%);

    /* Text */
    --color-text-primary: hsl(215, 30%, 92%);
    --color-text-secondary: hsl(215, 18%, 62%);
    --color-text-muted: hsl(215, 14%, 40%);

    /* Typography */
    --font-family: 'Vazirmatn', system-ui, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.85rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.15rem;
    --font-size-xl: 1.35rem;
    --font-size-2xl: 1.65rem;
    --font-size-3xl: 2rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadow */
    --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 24px var(--color-accent-glow);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s ease;

    /* Mobile Portal Touch Target Config */
    --mobile-input-height: 54px;
    --mobile-font-size-input: 1.15rem;
}

/* ----- Base Reset ---------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 1.05rem;
    font-weight: 400;
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg-base);
    direction: rtl;
    text-align: right;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    padding-bottom: 70px; /* Space for sticky status bar or action footer */
    background-image:
        radial-gradient(ellipse at 20% 20%, hsla(185, 80%, 25%, 0.12) 0%, transparent 55%),
        radial-gradient(ellipse at 80% 80%, hsla(260, 60%, 20%, 0.10) 0%, transparent 55%);
}

/* ----- Scrollbar ----------------------------------------- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-surface);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border-light);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
}

/* ----- Links --------------------------------------------- */
a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-accent-light);
}

/* ----- Buttons ------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-5);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-decoration: none;
    outline: none;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0);
    transition: background var(--transition-fast);
}

.btn:hover::after {
    background: rgba(255, 255, 255, 0.07);
}

.btn:active {
    transform: scale(0.97);
}

/* Primary */
.btn-primary {
    background: var(--color-accent);
    color: hsl(222, 28%, 7%);
    border-color: var(--color-accent);
    box-shadow: 0 2px 12px var(--color-accent-glow);
}

.btn-primary:hover {
    background: var(--color-accent-light);
    border-color: var(--color-accent-light);
    box-shadow: 0 4px 20px var(--color-accent-glow);
    color: hsl(222, 28%, 7%);
}

/* Outline */
.btn-outline {
    background: transparent;
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.btn-outline:hover {
    background: var(--color-accent-glow);
    color: var(--color-accent-light);
}

/* Ghost */
.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}

.btn-ghost:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
    border-color: var(--color-border-light);
}

.btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: var(--font-size-xs);
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-lg);
}

/* Theme Toggle Button */
.theme-toggle {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    width: 38px;
    height: 38px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1rem;
    flex-shrink: 0;
    line-height: 1;
}

.theme-toggle:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

/* ----- Form Controls ------------------------------------- */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
}

.form-label .required {
    color: var(--color-danger);
    margin-right: var(--space-1);
}

.form-control {
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    direction: rtl;
    outline: none;
    transition: all var(--transition-fast);
    width: 100%;
}

.form-control::placeholder {
    color: var(--color-text-muted);
}

.form-control:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
    background: var(--color-bg-hover);
}

.form-control.is-invalid {
    border-color: var(--color-danger);
    box-shadow: 0 0 0 3px var(--color-danger-glow);
}

select.form-control {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2364748b' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: left 12px center;
    padding-left: 36px;
    cursor: pointer;
}

.invalid-feedback {
    font-size: var(--font-size-xs);
    color: var(--color-danger);
    margin-top: var(--space-1);
}

/* Toggle switch component for meter readings (e.g. meter reset toggle) */
.toggle-checkbox {
    display: none;
}

.toggle-switch {
    position: relative;
    width: 44px;
    height: 24px;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    flex-shrink: 0;
    cursor: pointer;
}

.toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    right: 2px;
    width: 18px;
    height: 18px;
    background: var(--color-text-secondary);
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.toggle-checkbox:checked+.toggle-switch {
    background: var(--color-accent-glow);
    border-color: var(--color-accent);
}

.toggle-checkbox:checked+.toggle-switch::after {
    right: calc(100% - 20px);
    background: var(--color-accent);
    box-shadow: 0 0 8px var(--color-accent-glow);
}

/* ----- Alerts -------------------------------------------- */
.alert {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-6);
    font-size: var(--font-size-sm);
    font-weight: 500;
    animation: slideDown 0.3s ease;
}

.alert-success {
    background: hsla(142, 68%, 45%, 0.12);
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

.alert-danger {
    background: var(--color-danger-glow);
    border: 1px solid var(--color-danger);
    color: var(--color-danger);
}

.alert-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

/* ----- Animations ---------------------------------------- */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.4s ease both;
}

/* ----- Utilities ----------------------------------------- */
.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-muted); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-sm { font-size: var(--font-size-sm); }
.text-xs { font-size: var(--font-size-xs); }
.fw-bold { font-weight: 700; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mb-4 { margin-bottom: var(--space-4); }
.w-100 { width: 100%; }

/* ============================================================
   MOBILE-FIRST UI OVERRIDES AND ENHANCEMENTS (PWA Specific)
   ============================================================ */

/* Touch-friendly spacing and typography adjustments */
.form-control-mobile {
    height: var(--mobile-input-height);
    font-size: var(--mobile-font-size-input) !important;
    padding: 10px 16px;
    border-radius: var(--radius-md);
    font-weight: 600;
}

.form-label-mobile {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--color-text-primary);
}

.btn-mobile {
    height: 56px;
    font-size: 1.15rem !important;
    font-weight: 800 !important;
    border-radius: var(--radius-md) !important;
    width: 100%;
}

/* Simple Header for Reader */
.reader-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(14, 17, 28, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3) var(--space-4);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.reader-header__brand {
    font-weight: 800;
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.reader-header__status {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Network Status Badge */
.status-badge {
    font-size: 0.8rem;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.status-badge--online {
    background: rgba(142, 68, 45, 0) !important;
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

.status-badge--offline {
    background: rgba(220, 53, 69, 0.1) !important;
    border: 1px solid var(--color-danger);
    color: var(--color-danger);
    animation: pulse-red 2s infinite;
}

@keyframes pulse-red {
    0% { opacity: 0.7; }
    50% { opacity: 1; }
    100% { opacity: 0.7; }
}

.main-mobile {
    padding: var(--space-4);
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
}

/* ── Worker identity bar ── */
.worker-bar {
    background: var(--color-bg-card);
    border-bottom: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    padding: var(--space-4) var(--space-5);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.worker-bar__info small {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    font-weight: 600;
    margin-bottom: 2px;
}

.worker-bar__name {
    font-size: 1.15rem;
    font-weight: 900;
    color: var(--color-accent);
}

.worker-bar__logout {
    display: inline-flex;
    align-items: center;
    padding: 6px 14px;
    border: 1.5px solid var(--color-danger);
    border-radius: var(--radius-sm);
    color: var(--color-danger);
    font-size: 0.85rem;
    font-weight: 800;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.worker-bar__logout:active,
.worker-bar__logout:hover {
    background: var(--color-danger-glow);
}

/* ── Step headers ── */
.step-head {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-5) 0 var(--space-3);
}

.step-head__num {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--color-accent);
    color: var(--color-bg-base);
    font-size: 1.1rem;
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 2px 8px var(--color-accent-glow);
    transition: color var(--transition-fast);
}

html[data-theme="light"] .step-head__num {
    color: #ffffff;
}

.step-head__title {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--color-accent);
    letter-spacing: .3px;
}

/* ── Large Input Fields ── */
.inp {
    display: block;
    width: 100%;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: inherit;
    padding: 0 var(--space-5);
    transition: all var(--transition-fast);
    -webkit-appearance: none;
}

.inp:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
    background: var(--color-bg-hover);
}

.inp--text {
    height: 60px;
    font-size: 1.15rem;
    font-weight: 700;
}

.inp--number {
    height: 84px;
    font-size: 2.5rem;
    font-weight: 900;
    text-align: center;
    letter-spacing: 4px;
    direction: ltr;
}

.inp--number::placeholder {
    font-size: 1.65rem;
    letter-spacing: 1px;
    color: var(--color-text-muted);
}

/* ── Search Wrapper and Autocomplete Suggestions ── */
.search-wrap {
    position: relative;
    width: 100%;
}

.suggestions {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: var(--color-bg-card);
    border: 1.5px solid var(--color-accent);
    border-radius: var(--radius-md);
    z-index: 300;
    overflow: hidden;
    display: none;
    max-height: 280px;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.autocomplete-suggestion-mobile {
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.autocomplete-suggestion-mobile:last-child {
    border-bottom: none;
}

.autocomplete-suggestion-mobile:active,
.autocomplete-suggestion-mobile:hover {
    background: var(--color-bg-hover);
}

.autocomplete-suggestion-mobile--disabled {
    background: rgba(40, 167, 69, 0.06) !important;
    border-right: 4px solid var(--color-success);
}

.autocomplete-suggestion-mobile--disabled:active,
.autocomplete-suggestion-mobile--disabled:hover {
    background: rgba(40, 167, 69, 0.12) !important;
}

.autocomplete-suggestion-mobile__title {
    font-weight: 700;
    color: var(--color-text-primary);
    font-size: 1.05rem;
}

.autocomplete-suggestion-mobile__meta {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    display: flex;
    gap: 12px;
}

/* ── Selected Subscriber Card ── */
.sub-card {
    margin: var(--space-4) 0;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1.5px solid var(--color-border);
    background: var(--color-bg-card);
    box-shadow: var(--shadow-md);
    display: none;
}

.sub-card__top {
    background: var(--color-accent);
    padding: var(--space-4) var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-4);
    transition: background-color var(--transition-base);
}

html[data-theme="light"] .sub-card__top {
    color: #ffffff;
}

html[data-theme="dark"] .sub-card__top {
    color: var(--color-bg-base);
}

.sub-card__icon {
    font-size: 1.65rem;
    line-height: 1;
}

.sub-card__fullname {
    font-size: 1.2rem;
    font-weight: 900;
    color: inherit;
    line-height: 1.2;
    margin-bottom: 2px;
}

.sub-card__submeta {
    font-size: 0.85rem;
    font-weight: 700;
    color: inherit;
    opacity: 0.85;
}

.sub-card__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    background: transparent;
}

.sub-card__cell {
    padding: var(--space-4);
    border-left: 1px solid var(--color-border);
    border-top: 1px solid var(--color-border);
}

.sub-card__cell:nth-child(2n) {
    border-left: none;
}

.sub-card__cell-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-text-secondary);
    letter-spacing: .5px;
    margin-bottom: 4px;
}

.sub-card__cell-val {
    font-size: 1.4rem;
    font-weight: 900;
    color: var(--color-accent);
    direction: ltr;
    display: block;
    letter-spacing: 1px;
}

.sub-card__cell-val--sm {
    font-size: 0.95rem;
    letter-spacing: 0;
    color: var(--color-text-primary);
}

/* ── Date badges and warnings ── */
.date-badge {
    padding: var(--space-4) var(--space-5);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-sm);
}

.date-badge__label {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    font-weight: 700;
}

.date-badge__value {
    font-size: 1.15rem;
    font-weight: 900;
    color: var(--color-text-primary);
    letter-spacing: 1px;
    direction: ltr;
}

.value-warning {
    margin-top: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    background: var(--color-danger-glow);
    border: 1px solid var(--color-danger);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-danger);
    display: none;
    align-items: center;
    gap: var(--space-2);
}

.value-warning--abnormal {
    background: rgba(255, 165, 0, 0.12);
    border-color: #ffaa00;
    color: #ffaa00;
}

/* ── Selection Dropdowns ── */
.inp--select {
    height: 58px;
    font-size: 1.05rem;
    font-weight: 700;
    padding: 0 var(--space-10) 0 var(--space-4);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2300f0ff' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: left var(--space-4) center;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

html[data-theme="light"] .inp--select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%230b7285' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

.inp--select option {
    background: var(--color-bg-surface);
    color: var(--color-text-primary);
}

.inp--select.obstacle-active {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

/* ── Camera Capture Component ── */
.camera-box {
    min-height: 140px;
    background: var(--color-bg-surface);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-fast);
}

.camera-box:active {
    border-color: var(--color-accent);
    background: var(--color-bg-hover);
}

.camera-box.has-image {
    border-style: solid;
    border-color: var(--color-success);
    background: rgba(40, 167, 69, 0.02);
}

.camera-box__icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-2);
    color: var(--color-text-secondary);
    line-height: 1;
}

.camera-box__hint {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text-secondary);
}

.camera-preview {
    width: 100%;
    max-height: 250px;
    object-fit: contain;
    display: none;
    border-radius: var(--radius-md);
}

.remove-photo-btn {
    position: absolute;
    top: 10px;
    left: 10px;
    width: 38px;
    height: 38px;
    background: var(--color-danger);
    border: none;
    border-radius: 50%;
    color: #ffffff;
    font-size: 1.1rem;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10;
    box-shadow: var(--shadow-sm);
}

/* ── Geolocation GPS Bar ── */
.gps-status {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
}

.gps-status--acquired {
    border-color: var(--color-success);
    color: var(--color-success);
    background: rgba(40, 167, 69, 0.04);
}

.gps-status--searching {
    border-color: var(--color-warning);
    color: var(--color-warning);
    background: rgba(255, 193, 7, 0.04);
}

.gps-status--error {
    border-color: var(--color-danger) !important;
    color: var(--color-danger) !important;
    background: var(--color-danger-glow) !important;
}

.btn-gps-retry {
    background: var(--color-bg-base);
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast);
}

.btn-gps-retry:hover {
    background: var(--color-accent-glow);
    color: var(--color-accent-light);
}

.btn-gps-retry:active {
    transform: scale(0.95);
}

/* ── Notes ── */
.notes-toggle {
    display: block;
    width: 100%;
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-size: 0.9rem;
    font-weight: 700;
    font-family: inherit;
    padding: var(--space-3) 0;
    cursor: pointer;
    text-align: right;
    transition: color var(--transition-fast);
}

.notes-toggle:hover {
    color: var(--color-accent);
}

.notes-area {
    display: none;
    margin-top: var(--space-2);
}

.inp--notes {
    width: 100%;
    min-height: 90px;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    padding: var(--space-3) var(--space-4);
    resize: none;
    outline: none;
    transition: all var(--transition-fast);
}

.inp--notes:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
    background: var(--color-bg-hover);
}

/* ── Submit Area ── */
.submit-area {
    padding: var(--space-6) 0 var(--space-8);
}

.btn-submit {
    width: 100%;
    height: 72px;
    background: var(--color-accent);
    border: none;
    border-radius: var(--radius-lg);
    color: var(--color-bg-base);
    font-size: 1.25rem;
    font-weight: 900;
    font-family: inherit;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    transition: all var(--transition-fast);
    box-shadow: 0 4px 16px var(--color-accent-glow);
}

html[data-theme="light"] .btn-submit {
    color: #ffffff;
}

.btn-submit:hover {
    background: var(--color-accent-light);
    box-shadow: 0 6px 20px var(--color-accent-glow);
}

.btn-submit:active {
    transform: scale(0.98);
}

.btn-submit:disabled {
    opacity: 0.35;
    pointer-events: none;
    box-shadow: none;
}

.btn-submit__icon {
    font-size: 1.5rem;
}

/* Spacers */
.sp {
    height: 12px;
}

.sp-lg {
    height: 20px;
}

/* Sync Queue Bar */
.sync-queue-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-accent-dark);
    color: #0e111c;
    padding: 10px var(--space-4);
    font-size: 0.9rem;
    font-weight: 800;
    display: none;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 -4px 16px rgba(0,0,0,0.5);
    z-index: 999;
}

.sync-queue-bar__btn {
    background: #0e111c;
    color: var(--color-accent-light);
    border: none;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
}

/* ============================================================
   LIGHT THEME (PWA Specific Variables & Overrides)
   ============================================================ */
html[data-theme="light"] {
    --color-bg-base: hsl(220, 30%, 97%);
    --color-bg-surface: hsl(0, 0%, 100%);
    --color-bg-card: hsl(0, 0%, 100%);
    --color-bg-hover: hsl(220, 20%, 94%);
    --color-border: hsl(220, 15%, 88%);
    --color-border-light: hsl(220, 15%, 80%);

    --color-text-primary: hsl(220, 30%, 12%);
    --color-text-secondary: hsl(220, 16%, 40%);
    --color-text-muted: hsl(220, 12%, 58%);

    /* Accent — Darker for WCAG AA on white (contrast ~5.3:1) */
    --color-accent: hsl(185, 75%, 30%);
    --color-accent-dark: hsl(185, 75%, 22%);
    --color-accent-light: hsl(185, 75%, 38%);
    --color-accent-glow: hsla(185, 75%, 30%, 0.10);

    /* Status colors — Darker for readability on light backgrounds */
    --color-success: hsl(142, 70%, 30%);
    --color-success-dark: hsl(142, 70%, 22%);
    --color-danger: hsl(0, 72%, 45%);
    --color-danger-dark: hsl(0, 72%, 36%);
    --color-danger-glow: hsla(0, 72%, 45%, 0.12);
    --color-warning: hsl(38, 90%, 40%);
    --color-warning-dark: hsl(38, 90%, 32%);

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.10);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 28px rgba(0, 0, 0, 0.14);
    --shadow-glow: 0 0 20px var(--color-accent-glow);
}

html[data-theme="light"] body {
    background-color: var(--color-bg-base);
    background-image:
        radial-gradient(ellipse at 20% 15%, hsla(185, 70%, 60%, 0.07) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 85%, hsla(260, 50%, 60%, 0.05) 0%, transparent 50%);
}

html[data-theme="light"] .reader-header {
    background: rgba(255, 255, 255, 0.88);
    border-bottom-color: var(--color-border);
}

html[data-theme="light"] .info-card-mobile {
    background: var(--color-bg-card);
}

html[data-theme="light"] .form-control {
    background: var(--color-bg-surface);
    color: var(--color-text-primary);
    border-color: var(--color-border);
}

html[data-theme="light"] .form-control:focus {
    background: var(--color-bg-hover);
    border-color: var(--color-accent);
}

html[data-theme="light"] .btn-ghost {
    border-color: var(--color-border);
    color: var(--color-text-secondary);
}

html[data-theme="light"] .btn-ghost:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

html[data-theme="light"] .btn-primary,
html[data-theme="light"] .btn-primary:hover {
    color: #fff;
}

/* Smooth transition on theme change */
body,
.reader-header,
.worker-bar,
.form-control,
.btn-ghost {
    transition: background-color var(--transition-slow),
        border-color var(--transition-slow),
        color var(--transition-slow),
        box-shadow var(--transition-slow);
}

/* ============================================================
   JALALI DATEPICKER (Touch Optimized & Sleek)
   ============================================================ */

/* Input wrapper — acts as the visible bordered field */
.jdp-wrap {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    width: 100%;
    height: 60px;
}

.jdp-wrap:hover {
    border-color: var(--color-accent);
}

.jdp-wrap:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
    background: var(--color-bg-hover);
}

/* Inner input — no border/background, it inherits from the wrapper */
.jdp-wrap .form-control,
.jdp-wrap .inp {
    border: none !important;
    background: transparent !important;
    box-shadow: none !important;
    padding-left: 2.5rem; /* room for calendar icon (LTR side) */
    cursor: pointer;
    caret-color: transparent;
    flex: 1;
    min-width: 0;
    height: 100% !important;
    margin: 0 !important;
}

.jdp-wrap .form-control:focus,
.jdp-wrap .inp:focus {
    caret-color: var(--color-accent);
    outline: none;
    box-shadow: none !important;
}

/* Calendar icon inside input */
.jdp-icon {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    font-size: 0.85rem;
    pointer-events: auto;
    cursor: pointer;
    transition: color var(--transition-fast);
    z-index: 1;
    line-height: 1;
}

.jdp-wrap:focus-within .jdp-icon,
.jdp-wrap:hover .jdp-icon {
    color: var(--color-accent);
}

/* Valid state */
.jdp-wrap .form-control.jdp-valid,
.jdp-wrap .inp.jdp-valid {
    border-color: var(--color-success);
}

/* Popup calendar (Larger and mobile optimized) */
.jdp-popup {
    position: absolute;
    z-index: 9999;
    width: 320px;
    background: rgba(14, 18, 30, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--color-accent-glow);
    border-radius: var(--radius-lg, 16px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.55), 0 0 0 1px var(--color-accent-glow);
    padding: 0.9rem;
    opacity: 0;
    transform: translateY(-8px) scale(0.97);
    transition: opacity 0.18s ease, transform 0.18s ease;
    pointer-events: none;
    direction: rtl;
    font-family: var(--font-family, 'Vazirmatn', sans-serif);
}

.jdp-popup.jdp-open {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: all;
}

/* Header row */
.jdp-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.8rem;
    gap: 0.35rem;
}

.jdp-title {
    flex: 1;
    text-align: center;
    font-size: 0.98rem;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.jdp-nav {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: rgba(255,255,255,0.06);
    border-radius: 8px;
    color: var(--color-text-secondary);
    font-size: 1.05rem;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
    line-height: 1;
    flex-shrink: 0;
}

.jdp-nav:hover {
    background: var(--color-accent-glow);
    color: var(--color-accent);
}

/* Weekday headers */
.jdp-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin-bottom: 0.5rem;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    padding-bottom: 0.5rem;
}

.jdp-weekdays span {
    text-align: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-text-muted);
    padding: 3px 0;
}

/* Day grid (Larger buttons for finger-tapping) */
.jdp-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.jdp-day {
    width: 100%;
    aspect-ratio: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    border-radius: 8px;
    font-family: var(--font-family, 'Vazirmatn', sans-serif);
    font-size: 0.95rem;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: background 0.12s, color 0.12s, transform 0.1s;
    line-height: 1;
}

.jdp-day:hover:not(.jdp-empty):not([disabled]) {
    background: var(--color-accent-glow);
    color: var(--color-accent);
    transform: scale(1.1);
}

.jdp-day:active:not(.jdp-empty):not([disabled]) {
    transform: scale(0.95);
}

.jdp-day.jdp-empty {
    cursor: default;
    pointer-events: none;
}

.jdp-day.jdp-today {
    background: var(--color-accent-glow);
    color: var(--color-accent);
    font-weight: 700;
    border: 1px solid var(--color-accent);
}

.jdp-day.jdp-selected {
    background: var(--color-accent);
    color: var(--color-bg-base);
    font-weight: 800;
    box-shadow: 0 2px 8px var(--color-accent-glow);
    transform: scale(1.08);
}

html[data-theme="light"] .jdp-day.jdp-selected {
    color: #ffffff;
}

.jdp-day.jdp-selected:hover {
    background: var(--color-accent-light);
    transform: scale(1.1);
}

.jdp-day[disabled] {
    opacity: 0.3;
    cursor: not-allowed;
}

/* Footer */
.jdp-footer {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.6rem;
    border-top: 1px solid rgba(255,255,255,0.07);
    padding-top: 0.6rem;
}

.jdp-today-btn,
.jdp-clear-btn {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-family: var(--font-family, 'Vazirmatn', sans-serif);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}

.jdp-today-btn {
    background: var(--color-accent-glow);
    color: var(--color-accent);
    border-color: var(--color-accent);
}

.jdp-today-btn:hover {
    background: var(--color-accent);
    color: var(--color-bg-base);
}

html[data-theme="light"] .jdp-today-btn:hover {
    color: #ffffff;
}

.jdp-clear-btn {
    background: transparent;
    color: var(--color-text-muted);
    border-color: var(--color-border);
}

.jdp-clear-btn:hover {
    background: var(--color-danger-glow);
    color: var(--color-danger);
    border-color: var(--color-danger);
}

/* ─── Light Theme Overrides ─── */
[data-theme="light"] .jdp-popup {
    background: rgba(255, 255, 255, 0.98);
    border-color: var(--color-accent-glow);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15), 0 0 0 1px var(--color-accent-glow);
}

[data-theme="light"] .jdp-title {
    color: var(--color-accent);
}

[data-theme="light"] .jdp-nav {
    background: rgba(0,0,0,0.05);
    color: var(--color-text-secondary);
}

[data-theme="light"] .jdp-nav:hover {
    background: var(--color-accent-glow);
    color: var(--color-accent);
}

[data-theme="light"] .jdp-weekdays {
    border-bottom-color: var(--color-border);
}

[data-theme="light"] .jdp-weekdays span {
    color: var(--color-text-secondary);
}

[data-theme="light"] .jdp-day {
    color: var(--color-text-primary);
}

[data-theme="light"] .jdp-day:hover:not(.jdp-empty):not([disabled]) {
    background: var(--color-accent-glow);
    color: var(--color-accent);
}

[data-theme="light"] .jdp-day.jdp-today {
    background: var(--color-accent-glow);
    color: var(--color-accent);
    border-color: var(--color-accent);
}

[data-theme="light"] .jdp-day.jdp-selected {
    background: var(--color-accent);
    color: #fff;
    box-shadow: 0 2px 8px var(--color-accent-glow);
}

[data-theme="light"] .jdp-footer {
    border-top-color: var(--color-border);
}

[data-theme="light"] .jdp-today-btn {
    background: var(--color-accent-glow);
    color: var(--color-accent);
    border-color: var(--color-accent);
}

[data-theme="light"] .jdp-today-btn:hover {
    background: var(--color-accent);
    color: #fff;
}

[data-theme="light"] .jdp-clear-btn {
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}

[data-theme="light"] .jdp-icon {
    color: var(--color-text-muted);
}

[data-theme="light"] .jdp-wrap {
    background: #fff;
    border-color: var(--color-border);
}

[data-theme="light"] .jdp-wrap:hover {
    border-color: var(--color-accent);
}

[data-theme="light"] .jdp-wrap:focus-within {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
    background: #f8fafc;
}

/* Responsive – make sure popup doesn't overflow on tiny screens */
@media (max-width: 400px) {
    .jdp-popup {
        width: calc(100vw - 24px);
    }
}

/* ============================================================
   GPS AND GENERAL OVERRIDES FOR METER READER PORTAL
   ============================================================ */

.gps-status--error {
    border-color: var(--color-danger) !important;
    color: var(--color-danger) !important;
    background: var(--color-danger-glow) !important;
}

.btn-gps-retry {
    background: var(--color-bg-base);
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 700;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast);
}

.btn-gps-retry:hover {
    background: var(--color-accent-glow);
    color: var(--color-accent-light);
}

.btn-gps-retry:active {
    transform: scale(0.95);
}

.indicator-dot-fa {
    animation: fa-pulse 2s infinite;
}

@keyframes fa-pulse {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.6; }
}

/* ============================================================
   CUSTOM MESSAGE MODAL (OVERLAY & CARDS)
   ============================================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000; /* Ensure it is above the sticky header (100) and autocomplete dropdown (300) */
    padding: var(--space-4);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.modal-overlay--show {
    opacity: 1;
}

.modal-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border);
    padding: var(--space-6);
    width: 100%;
    max-width: 400px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px);
    transition: transform 0.25s ease;
}

.modal-overlay--show .modal-card {
    transform: translateY(0);
}

.modal-card__icon {
    font-size: 3rem;
    margin-bottom: var(--space-3);
    line-height: 1;
}

.modal-card__title {
    font-size: 1.25rem;
    font-weight: 900;
    margin-bottom: var(--space-2);
}

.modal-card__message {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-5);
    line-height: 1.6;
}

.btn-modal-ok {
    display: block;
    width: 100%;
    height: 50px;
    background: var(--color-accent);
    color: hsl(222, 28%, 7%);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 800;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-modal-ok:active {
    transform: scale(0.97);
}

/* Success Variant */
.modal-card--success {
    border-color: var(--color-success);
    box-shadow: 0 0 24px rgba(76, 175, 80, 0.15);
}
.modal-card--success .modal-card__icon {
    color: var(--color-success);
}
.modal-card--success .modal-card__title {
    color: var(--color-success);
}
.modal-card--success .btn-modal-ok {
    background: var(--color-success);
    color: #ffffff;
}

/* Warning/Offline Variant */
.modal-card--warning {
    border-color: var(--color-warning);
    box-shadow: 0 0 24px rgba(255, 152, 0, 0.15);
}
.modal-card--warning .modal-card__icon {
    color: var(--color-warning);
}
.modal-card--warning .modal-card__title {
    color: var(--color-warning);
}
.modal-card--warning .btn-modal-ok {
    background: var(--color-warning);
    color: #ffffff;
}

/* Error Variant */
.modal-card--error {
    border-color: var(--color-danger);
    box-shadow: 0 0 24px rgba(244, 67, 54, 0.15);
}
.modal-card--error .modal-card__icon {
    color: var(--color-danger);
}
.modal-card--error .modal-card__title {
    color: var(--color-danger);
}
.modal-card--error .btn-modal-ok {
    background: var(--color-danger);
    color: #ffffff;
}

/* Light Theme Overrides for Modal */
[data-theme="light"] .modal-overlay {
    background: rgba(15, 23, 42, 0.45);
}
[data-theme="light"] .modal-card {
    background: #ffffff;
    border-color: var(--color-border);
}
[data-theme="light"] .modal-card__message {
    color: var(--color-text-secondary);
}

/* Toast Notification Style (Floating Glassmorphism) */
.toast-notification {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: rgba(0, 230, 118, 0.22);
    border: 1.5px solid var(--color-success);
    color: #ffffff;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: var(--space-3) var(--space-5);
    border-radius: var(--radius-md);
    font-weight: 800;
    font-size: 1rem;
    z-index: 2000;
    display: flex;
    align-items: center;
    gap: 8px;
    opacity: 0;
    transition: opacity 0.4s ease, transform 0.4s ease;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    pointer-events: none;
}

.toast-notification.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

[data-theme="light"] .toast-notification {
    background: rgba(46, 125, 50, 0.9);
    border-color: #2e7d32;
    color: #ffffff;
    box-shadow: 0 8px 32px rgba(46, 125, 50, 0.25);
}

/* Offline Alert/Banner Custom Style */
.alert-offline-registered {
    border: 2px solid var(--color-danger) !important;
    background: var(--color-danger-glow) !important;
    color: var(--color-danger) !important;
    box-shadow: 0 0 12px var(--color-danger-glow);
}

/* Offline Queue Modal List Items */
.offline-queue-item {
    padding: var(--space-3);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-2);
}
.offline-queue-item:last-child {
    border-bottom: none;
}
.offline-queue-item__info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.offline-queue-item__name {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--color-text-primary);
}
.offline-queue-item__file {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
}
.offline-queue-item__details {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
}
.offline-queue-item__value {
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--color-accent);
}
.offline-queue-item__date {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

[data-theme="light"] .offline-queue-item {
    border-bottom-color: var(--color-border-light);
}
[data-theme="light"] .offline-queue-item__name {
    color: var(--color-text-primary);
}
[data-theme="light"] .offline-queue-item__file {
    color: var(--color-text-secondary);
}
[data-theme="light"] .offline-queue-item__value {
    color: var(--color-accent);
}
[data-theme="light"] .offline-queue-item__date {
    color: var(--color-text-muted);
}

/* ============================================================
   BOTTOM NAVIGATION BAR & TAB SYSTEM STYLES
   ============================================================ */

/* Bottom Navigation Bar */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: 66px;
    background: hsla(222, 25%, 11%, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid hsla(222, 18%, 22%, 0.6);
    display: flex;
    justify-content: space-around;
    align-items: center;
    z-index: 1000;
    padding-bottom: env(safe-area-inset-bottom);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.25);
}

.bottom-nav__item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 700;
    flex: 1;
    height: 100%;
    transition: color var(--transition-fast), transform var(--transition-fast);
    position: relative;
}

.bottom-nav__item i {
    font-size: 1.25rem;
    transition: transform var(--transition-fast);
}

.bottom-nav__item span {
    font-size: 0.75rem;
}

.bottom-nav__item:active {
    transform: scale(0.95);
}

.bottom-nav__item.active {
    color: var(--color-accent);
}

.bottom-nav__item.active i {
    transform: translateY(-2px);
    text-shadow: 0 0 12px var(--color-accent-glow);
}

/* Badges on Bottom Nav */
.bottom-nav__badge {
    position: absolute;
    top: 6px;
    right: 50%;
    transform: translateX(18px);
    min-width: 18px;
    height: 18px;
    padding: 0 4px;
    border-radius: 9px;
    font-size: 0.7rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.bottom-nav__badge--unread {
    background: var(--color-danger);
    box-shadow: 0 0 8px var(--color-danger-glow);
}

.bottom-nav__badge--offline {
    background: var(--color-warning);
    color: #1c1917;
}

/* Tab content switching & animation */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeInTab var(--transition-base) forwards;
}

@keyframes fadeInTab {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Unread list and cards styles */
.unread-list-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-top: var(--space-4);
}

.unread-card {
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-3) var(--space-4);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.unread-card:hover {
    border-color: var(--color-accent);
    background-color: var(--color-bg-hover);
}

.unread-card__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-2);
}

.unread-card__title {
    font-weight: 800;
    font-size: 1rem;
    color: var(--color-text-primary);
}

.unread-card__days-badge {
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 800;
    white-space: nowrap;
}

.unread-card__days-badge--never {
    background: var(--color-danger-glow);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.unread-card__days-badge--overdue {
    background: rgba(245, 158, 11, 0.15);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.unread-card__address {
    font-size: 0.8rem;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    line-height: 1.4;
}

.unread-card__footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 4px;
    border-top: 1px dashed var(--color-border);
    padding-top: var(--space-2);
}

.unread-card__last-reading {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.unread-card__btn {
    background: var(--color-accent);
    color: hsl(222, 28%, 7%);
    border: none;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 800;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast);
}

.unread-card__btn:hover {
    background: var(--color-accent-light);
    box-shadow: 0 0 10px var(--color-accent-glow);
}

/* Offline screen sync button and empty state styles */
.offline-sync-section {
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin-bottom: var(--space-5);
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.offline-sync-section__count-text {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-3);
}

.offline-sync-section__btn {
    width: 100%;
    max-width: 320px;
    padding: var(--space-3) var(--space-5);
    font-size: 1rem;
    font-weight: 800;
    border-radius: var(--radius-md);
    background: var(--color-accent);
    color: hsl(222, 28%, 7%);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 14px var(--color-accent-glow);
    transition: all var(--transition-fast);
}

.offline-sync-section__btn:hover {
    background: var(--color-accent-light);
    transform: translateY(-1px);
}

.offline-empty-state {
    text-align: center;
    padding: var(--space-10) var(--space-6);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
}

.offline-empty-state__icon {
    font-size: 3.5rem;
    color: var(--color-success);
    text-shadow: 0 0 15px rgba(0, 230, 118, 0.25);
    margin-bottom: var(--space-2);
}

.offline-empty-state__title {
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--color-text-primary);
}

.offline-empty-state__desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    max-width: 280px;
    line-height: 1.6;
}

/* Light Theme support overrides for new components */
[data-theme="light"] .bottom-nav {
    background: rgba(255, 255, 255, 0.9);
    border-top-color: hsl(220, 15%, 85%);
    box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .bottom-nav__item {
    color: hsl(220, 12%, 40%);
}

[data-theme="light"] .bottom-nav__item.active {
    color: hsl(185, 90%, 40%);
}

[data-theme="light"] .unread-card {
    background: #ffffff;
    border-color: hsl(220, 15%, 85%);
}

[data-theme="light"] .unread-card:hover {
    border-color: hsl(185, 90%, 40%);
    background-color: hsl(220, 20%, 97%);
}

[data-theme="light"] .unread-card__days-badge--never {
    background: rgba(239, 68, 68, 0.08);
    color: hsl(0, 75%, 45%);
    border-color: rgba(239, 68, 68, 0.15);
}

[data-theme="light"] .unread-card__days-badge--overdue {
    background: rgba(245, 158, 11, 0.08);
    color: hsl(38, 90%, 40%);
    border-color: rgba(245, 158, 11, 0.15);
}

[data-theme="light"] .unread-card__footer {
    border-top-color: hsl(220, 15%, 90%);
}

[data-theme="light"] .unread-card__btn {
    background: hsl(185, 90%, 40%);
    color: #ffffff;
}

[data-theme="light"] .unread-card__btn:hover {
    background: hsl(185, 90%, 35%);
}

[data-theme="light"] .offline-sync-section {
    background: #ffffff;
    border-color: hsl(220, 15%, 85%);
}

[data-theme="light"] .offline-sync-section__btn {
    background: hsl(185, 90%, 40%);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(0, 188, 212, 0.2);
}

[data-theme="light"] .offline-sync-section__btn:hover {
    background: hsl(185, 90%, 35%);
}

[data-theme="light"] .offline-empty-state {
    background: #ffffff;
    border-color: hsl(220, 15%, 85%);
}