/* CSS Variable Design Tokens */
:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.6);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --accent-blue: #38bdf8;
    --accent-yellow: #f59e0b;
    --accent-purple: #c084fc;
    --accent-red: #f43f5e;
    --accent-green: #34d399;
    --focus-ring: #38bdf8;
    --font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* High Contrast/Text-Only Mode Override */
body.text-only {
    --bg-color: #000000;
    --card-bg: #121212;
    --card-border: #ffffff;
    --text-color: #ffffff;
    --text-muted: #cccccc;
    --accent-blue: #00ffff;
    --accent-yellow: #ffff00;
    --accent-purple: #ff00ff;
    --accent-red: #ff0000;
    --accent-green: #00ff00;
    --focus-ring: #ffff00;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    line-height: 1.6;
    padding: 2rem 1rem;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent-yellow);
    color: #000;
    padding: 8px;
    z-index: 100;
    text-decoration: none;
    font-weight: bold;
}
.skip-link:focus {
    top: 0;
}

/* Screen Reader Only Utility Class */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Container */
.container {
    max-width: 1000px;
    margin: 0 auto;
}

/* Header & Search */
header {
    margin-bottom: 2rem;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #38bdf8 0%, #c084fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

body.text-only header h1 {
    background: none;
    -webkit-background-clip: initial;
    -webkit-text-fill-color: initial;
    color: var(--text-color);
}

.search-box {
    margin: 1.5rem auto;
    max-width: 500px;
}

.search-form {
    display: flex;
    gap: 0.5rem;
}

.search-form input[type="text"] {
    flex: 1;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-color);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

body.text-only .search-form input[type="text"] {
    background-color: #000;
    border: 2px solid #fff;
}

.search-form input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.search-form button {
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    border: none;
    background-color: var(--accent-blue);
    color: #0f172a;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    font-family: inherit;
    transition: opacity 0.2s;
}

body.text-only .search-form button {
    background-color: #fff;
    color: #000;
    border: 2px solid #fff;
}

.search-form button:hover, .search-form button:focus {
    opacity: 0.9;
}

/* Disambiguation (Rozcestník) */
.disambiguation {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.disambiguation h2 {
    margin-bottom: 1rem;
}

.disambiguation ul {
    list-style: none;
}

.disambiguation li {
    margin-bottom: 0.75rem;
}

.disambiguation a {
    color: var(--accent-blue);
    font-weight: bold;
    text-decoration: none;
    display: inline-block;
    padding: 0.5rem;
    border-radius: 8px;
    border: 1px dashed transparent;
}

.disambiguation a:hover, .disambiguation a:focus {
    border-color: var(--accent-blue);
    text-decoration: underline;
}

/* Accessibility Mode Button */
.a11y-toggle {
    margin: 1rem 0;
    text-align: right;
}

.btn-a11y {
    background: transparent;
    border: 2px solid var(--accent-yellow);
    color: var(--accent-yellow);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    font-family: inherit;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.btn-a11y:hover, .btn-a11y:focus {
    background: var(--accent-yellow);
    color: #000;
}

/* Universal Keyboard Focus State */
*:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 3px;
}

/* Glass Cards */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 2rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

body.text-only .card {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    box-shadow: none;
    border: 2px solid #fff;
    border-radius: 0;
    margin-bottom: 1.5rem;
    padding: 1.5rem;
}

/* Current Weather Grid */
.current-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .current-grid {
        grid-template-columns: 1fr;
    }
}

.temp-hero {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.temp-value {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1;
}

.weather-icon-wrapper {
    font-size: 3.5rem;
}

.feels-like {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-top: 0.5rem;
}

.condition-text {
    font-size: 1.5rem;
    font-weight: bold;
    margin-top: 0.5rem;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 1rem;
}

.detail-item {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 16px;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.02);
}

body.text-only .detail-item {
    background: transparent;
    border: 1px solid #fff;
    border-radius: 0;
}

.detail-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.detail-value {
    font-size: 1.2rem;
    font-weight: bold;
    margin-top: 0.25rem;
}

/* Indices (Biomet, Laundry, Trip) */
.indices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.index-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 1.5rem;
}

body.text-only .index-card {
    background: transparent;
    border: 2px solid #fff;
    border-radius: 0;
}

.index-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.index-title {
    font-size: 1.1rem;
    font-weight: bold;
}

.index-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
}

.badge-green { background: rgba(52, 211, 153, 0.15); color: var(--accent-green); border: 1px solid var(--accent-green); }
.badge-yellow { background: rgba(245, 158, 11, 0.15); color: var(--accent-yellow); border: 1px solid var(--accent-yellow); }
.badge-red { background: rgba(244, 63, 94, 0.15); color: var(--accent-red); border: 1px solid var(--accent-red); }
.badge-purple { background: rgba(192, 132, 252, 0.15); color: var(--accent-purple); border: 1px solid var(--accent-purple); }

body.text-only .index-badge {
    background: transparent;
    border: 1px solid currentColor;
}

/* Tables for Screen Readers & High Contrast */
table.weather-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}

table.weather-table th {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-weight: bold;
    padding: 1rem;
    text-align: left;
    font-size: 0.9rem;
    text-transform: uppercase;
}

body.text-only table.weather-table th {
    background: #121212;
    border-bottom: 2px solid #fff;
}

table.weather-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--card-border);
}

body.text-only table.weather-table td {
    border-bottom: 1px solid #fff;
}

table.weather-table tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Hourly Timeline CSS Chart for Standard Mode */
.timeline-container {
    overflow-x: auto;
    padding-bottom: 1rem;
    margin: 1.5rem 0;
}

.timeline {
    display: flex;
    gap: 1.5rem;
    min-width: 800px;
    justify-content: space-between;
}

.timeline-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    background: rgba(255, 255, 255, 0.01);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 1rem 0.5rem;
    text-align: center;
}

.timeline-time {
    font-weight: bold;
    font-size: 0.9rem;
}

.timeline-temp {
    font-size: 1.3rem;
    font-weight: 800;
    margin: 0.5rem 0;
    color: var(--accent-blue);
}

.timeline-precip {
    font-size: 0.75rem;
    color: #60a5fa;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Radar & Footer links */
.radar-section {
    text-align: center;
}

.btn-radar {
    display: inline-block;
    background: linear-gradient(135deg, #38bdf8 0%, #c084fc 100%);
    color: #0f172a;
    font-weight: bold;
    text-decoration: none;
    padding: 1rem 2.5rem;
    border-radius: 16px;
    font-size: 1.1rem;
    box-shadow: 0 4px 20px rgba(56, 189, 248, 0.3);
    transition: transform 0.2s, box-shadow 0.2s;
    border: 2px solid transparent;
}

body.text-only .btn-radar {
    background: transparent;
    color: #ffff00;
    border: 2px solid #ffff00;
    box-shadow: none;
    border-radius: 0;
}

.btn-radar:hover, .btn-radar:focus {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(56, 189, 248, 0.4);
}

body.text-only .btn-radar:hover, body.text-only .btn-radar:focus {
    transform: none;
    background: #ffff00;
    color: #000;
}

footer {
    text-align: center;
    margin-top: 3rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

footer a {
    color: var(--accent-blue);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* Accessibility Alert Banner */
.alert-banner {
    background-color: rgba(244, 63, 94, 0.15);
    border: 1px solid var(--accent-red);
    color: var(--text-color);
    padding: 1rem;
    border-radius: 16px;
    margin-bottom: 2rem;
    display: flex;
    gap: 1rem;
    align-items: center;
}

body.text-only .alert-banner {
    border: 2px solid var(--accent-red);
    border-radius: 0;
}

.alert-icon {
    font-size: 1.5rem;
    color: var(--accent-red);
}

.alert-message {
    font-size: 0.95rem;
    font-weight: 500;
}

/* Custom Checkbox Toggle for Storm Vectors */
.vector-toggle-container {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.5rem;
    cursor: pointer;
    user-select: none;
    color: var(--text-color);
    font-size: 0.95rem;
    font-weight: 500;
}

.vector-toggle-container input[type="checkbox"] {
    appearance: none;
    width: 2.5rem;
    height: 1.3rem;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    position: relative;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
    outline: none;
}

.vector-toggle-container input[type="checkbox"]::before {
    content: "";
    position: absolute;
    width: 1rem;
    height: 1rem;
    border-radius: 50%;
    background-color: var(--text-muted);
    top: 50%;
    left: 0.15rem;
    transform: translateY(-50%);
    transition: transform 0.2s, background-color 0.2s;
}

.vector-toggle-container input[type="checkbox"]:checked {
    background-color: rgba(56, 189, 248, 0.2);
    border-color: var(--accent-blue);
}

.vector-toggle-container input[type="checkbox"]:checked::before {
    transform: translate(1.15rem, -50%);
    background-color: var(--accent-blue);
}

body.text-only .vector-toggle-container input[type="checkbox"] {
    appearance: checkbox;
    width: auto;
    height: auto;
}

body.text-only .vector-toggle-container input[type="checkbox"]::before {
    display: none;
}

/* Top Nav / User Portal specific styles */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}
@media (max-width: 576px) {
    .top-nav {
        flex-direction: column-reverse;
        gap: 0.75rem;
        align-items: flex-end;
    }
}
.user-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* User modal specific styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}
.modal-content {
    background: rgba(30, 41, 59, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    margin: 10% auto;
    padding: 2.5rem;
    width: 90%;
    max-width: 480px;
    border-radius: 24px;
    color: #f8fafc;
    position: relative;
    animation: modalFadeIn 0.3s ease-out;
}
@keyframes modalFadeIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}
.modal-close {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
}
.modal-close:hover {
    color: #fff;
}
.form-group {
    margin-bottom: 1.25rem;
}
.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 0.875rem;
}
.form-group input, .form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    border: 1px solid var(--card-border);
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-color);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s;
}
.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--accent-blue);
}
.form-btn {
    width: 100%;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    border: none;
    background-color: var(--accent-blue);
    color: #0f172a;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    font-family: inherit;
    transition: opacity 0.2s;
    margin-top: 0.5rem;
}
.form-btn:hover {
    opacity: 0.9;
}
.text-link {
    color: var(--accent-blue);
    cursor: pointer;
    text-decoration: underline;
}
.badge-green {
    background: rgba(52, 211, 153, 0.15);
    color: var(--accent-green);
}
.hidden {
    display: none !important;
}