/*
 * BatTuVi - Luận Bát Tự Trực Tuyến
 * Custom Styles with Vietnamese Mystical Theme
 * Updated: 2025-12 - New 3 Features UI
 */

/* ==================== CSS Variables ==================== */
:root {
    /* Colors - Dark mystical theme */
    --color-bg: #0f0f1a;
    --color-bg-card: #1a1a2e;
    --color-bg-hover: #252540;
    --color-primary: #e94560;
    --color-secondary: #0f3460;
    --color-accent: #ffc947;
    --color-text: #eaeaea;
    --color-text-muted: #888;
    --color-border: #333;
    --color-success: #2ecc71;
    --color-warning: #f39c12;
    --color-danger: #e74c3c;

    /* Element colors */
    --color-kim: #c0c0c0;
    /* Kim - Metal */
    --color-moc: #2ecc71;
    /* Mộc - Wood */
    --color-thuy: #3498db;
    /* Thủy - Water */
    --color-hoa: #e74c3c;
    /* Hỏa - Fire */
    --color-tho: #f39c12;
    /* Thổ - Earth */

    /* Fonts */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

/* ==================== Base Styles ==================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ==================== Header ==================== */
.header {
    background: var(--color-bg-card);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--color-text);
}

.logo-img {
    height: 40px;
    width: auto;
    border-radius: var(--radius-sm);
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--color-text-muted);
    text-decoration: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    transition: all 0.3s;
}

.nav-link:hover {
    color: var(--color-text);
    background: var(--color-bg-hover);
}

/* ==================== Hero Section ==================== */
.hero {
    text-align: center;
    padding: var(--spacing-xl) 0;
    background: linear-gradient(180deg, var(--color-secondary) 0%, transparent 100%);
}

.hero-header {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-title {
    font-family: var(--font-display);
    font-size: 2.5rem;
    margin-bottom: 0;
    background: linear-gradient(135deg, var(--color-accent), var(--color-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.title-icon {
    height: 50px;
    width: auto;
    border-radius: var(--radius-sm);
}

.language-toggle {
    display: flex;
    gap: var(--spacing-sm);
    background: var(--color-bg-card);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.language-toggle .radio-label {
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.language-toggle .radio-label:has(input:checked) {
    background: var(--color-primary);
    color: white;
}

.language-toggle input[type="radio"] {
    display: none;
}

.hero-subtitle {
    color: var(--color-text-muted);
    font-size: 1.1rem;
    margin-top: var(--spacing-md);
}

/* ==================== Cards ==================== */
.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
}

/* ==================== Forms ==================== */
.form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-label {
    font-weight: 500;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.input-toggle {
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 2px 6px;
    font-size: 0.85rem;
    cursor: pointer;
    margin-left: auto;
    transition: all 0.2s;
}

.input-toggle:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-accent);
}

.form-input {
    padding: var(--spacing-md);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%23888' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

.radio-group {
    display: flex;
    gap: var(--spacing-lg);
}

.radio-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.radio-label input {
    accent-color: var(--color-primary);
}

/* ==================== Buttons ==================== */
.button-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.button-group-4 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    min-height: 56px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), #c73e54);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(233, 69, 96, 0.3);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--color-secondary), #0a2647);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(15, 52, 96, 0.5);
}

.btn-accent {
    background: linear-gradient(135deg, var(--color-accent), #e0a800);
    color: #1a1a2e;
}

.btn-accent:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 201, 71, 0.3);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--color-border);
    color: var(--color-text);
    padding: var(--spacing-sm) var(--spacing-md);
    min-height: auto;
}

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

.btn-full {
    background: linear-gradient(135deg, #8e44ad, #9b59b6);
    color: white;
    grid-column: 1 / -1;
    font-size: 1.1rem;
}

.btn-full:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(142, 68, 173, 0.4);
}

/* ==================== Feature Hints ==================== */
.feature-hints {
    margin-top: var(--spacing-md);
}

.hint {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-accent);
}

.hint-icon {
    font-size: 1.2rem;
}

.hint-text {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* ==================== Alerts ==================== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

.alert-error {
    background: rgba(231, 76, 60, 0.2);
    border: 1px solid var(--color-hoa);
    color: var(--color-hoa);
}

/* ==================== Bazi Chart ==================== */
.bazi-chart {
    margin: var(--spacing-lg) 0;
    overflow-x: auto;
}

.bazi-table {
    width: 100%;
    border-collapse: collapse;
    text-align: center;
}

.bazi-table th,
.bazi-table td {
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
}

.bazi-table th {
    background: var(--color-secondary);
    font-family: var(--font-display);
}

.bazi-table .highlight {
    background: rgba(233, 69, 96, 0.2);
    border-color: var(--color-primary);
}

.bazi-table .tian-gan td {
    font-size: 1.25rem;
    font-weight: 600;
}

.bazi-table .di-zhi td {
    font-size: 1.25rem;
}

/* ==================== Info Box ==================== */
.info-box {
    background: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.info-box p {
    margin: var(--spacing-sm) 0;
}

/* ==================== Wu Xing Chart ==================== */
.wu-xing-chart {
    margin-top: var(--spacing-lg);
}

.wu-xing-chart h3 {
    margin-bottom: var(--spacing-md);
}

.wu-xing-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.wu-xing-label {
    width: 60px;
    font-weight: 500;
}

.wu-xing-progress {
    flex: 1;
    height: 20px;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.wu-xing-fill {
    height: 100%;
    border-radius: var(--radius-sm);
    transition: width 0.5s ease;
}

.wu-xing-fill[data-element="Kim"] {
    background: var(--color-kim);
}

.wu-xing-fill[data-element="Mộc"] {
    background: var(--color-moc);
}

.wu-xing-fill[data-element="Thủy"] {
    background: var(--color-thuy);
}

.wu-xing-fill[data-element="Hỏa"] {
    background: var(--color-hoa);
}

.wu-xing-fill[data-element="Thổ"] {
    background: var(--color-tho);
}

.wu-xing-score {
    width: 30px;
    text-align: right;
    font-weight: 600;
}

/* ==================== Calendar Table ==================== */
.calendar-table-wrapper {
    overflow-x: auto;
    margin-top: var(--spacing-lg);
}

.calendar-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.calendar-table th,
.calendar-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-border);
    text-align: center;
}

.calendar-table th {
    background: var(--color-secondary);
    font-weight: 600;
}

.calendar-table .good-month {
    background: rgba(46, 204, 113, 0.1);
}

.calendar-table .bad-month {
    background: rgba(231, 76, 60, 0.1);
}

/* ==================== Rating Box ==================== */
.rating-box {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-lg);
}

.rating-title {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-sm);
}

.rating-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent);
}

/* ==================== Footer ==================== */
.footer {
    text-align: center;
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    color: var(--color-text-muted);
}

.footer-note {
    font-size: 0.85rem;
    margin-top: var(--spacing-sm);
}

/* ==================== AI Integration Styles ==================== */

.ai-toggle {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(255, 201, 71, 0.1);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-md);
}

.toggle-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.toggle-icon {
    font-size: 1.5rem;
}

.toggle-text {
    font-weight: 500;
    color: var(--color-accent);
}

.ai-notice {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(231, 76, 60, 0.1);
    border: 1px solid var(--color-danger);
    border-radius: var(--radius-md);
    color: var(--color-danger);
    font-size: 0.9rem;
}

.ai-notice code {
    background: var(--color-bg);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-family: monospace;
}

.ai-card {
    border-color: var(--color-accent);
    background: linear-gradient(180deg, rgba(255, 201, 71, 0.05) 0%, var(--color-bg-card) 100%);
}

.ai-card .card-title {
    color: var(--color-accent);
}

.ai-header {
    margin-bottom: var(--spacing-md);
}

.ai-summary {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.badge {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    border: 1px solid var(--color-border);
}

.badge-primary {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.badge-secondary {
    border-color: var(--color-secondary);
}

.badge-accent {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.ai-content {
    padding: var(--spacing-lg);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    line-height: 1.8;
    max-height: 70vh;
    overflow-y: auto;
}

.ai-content h1 {
    font-size: 1.5rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: var(--spacing-sm);
}

.ai-content h2 {
    font-size: 1.3rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-accent);
}

.ai-content h3 {
    font-size: 1.1rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--color-success);
}

.ai-content h4 {
    font-size: 1rem;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.ai-content strong {
    color: var(--color-primary);
}

.ai-content em {
    color: var(--color-accent);
}

.ai-content ul {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-lg);
}

.ai-content li {
    margin-bottom: var(--spacing-sm);
}

.ai-content p {
    margin-bottom: var(--spacing-md);
}

.ai-content .content-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-md) 0;
}

.ai-content .content-table td {
    border: 1px solid var(--color-border);
    padding: var(--spacing-sm) var(--spacing-md);
}

.ai-content .content-table tr:first-child td {
    background: var(--color-secondary);
    font-weight: 600;
}

.ai-usage {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    text-align: right;
    color: var(--color-text-muted);
    border-top: 1px solid var(--color-border);
}

.result-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

/* Loading animation for AI */
.ai-card.loading::after {
    content: "🤖 AI đang suy nghĩ...";
    display: block;
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-accent);
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 0.5;
    }

    50% {
        opacity: 1;
    }
}

/* ==================== Scrollbar Styling ==================== */
.ai-content::-webkit-scrollbar {
    width: 8px;
}

.ai-content::-webkit-scrollbar-track {
    background: var(--color-bg-card);
    border-radius: var(--radius-sm);
}

.ai-content::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: var(--radius-sm);
}

.ai-content::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ==================== Responsive ==================== */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }

    .button-group {
        grid-template-columns: 1fr;
    }

    .btn {
        width: 100%;
        justify-content: center;
        min-height: 52px;
        font-size: 1rem;
    }

    .nav {
        display: none;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-header {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .hero-subtitle {
        font-size: 0.95rem;
        padding: 0 var(--spacing-md);
    }

    .ai-summary {
        flex-direction: column;
    }

    .result-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .result-actions .btn {
        min-height: 44px;
    }

    /* Mobile-friendly form inputs */
    .form-input {
        font-size: 16px;
        /* Prevents iOS zoom on focus */
        min-height: 48px;
        padding: var(--spacing-md);
    }

    /* Date/Time inputs - larger touch targets */
    input[type="date"],
    input[type="time"] {
        font-size: 16px;
        min-height: 52px;
        padding: var(--spacing-md);
        -webkit-appearance: none;
        appearance: none;
    }

    /* Make date picker button area larger */
    input[type="date"]::-webkit-calendar-picker-indicator,
    input[type="time"]::-webkit-calendar-picker-indicator {
        background: transparent;
        cursor: pointer;
        padding: 10px;
        margin-right: -10px;
    }

    /* Radio buttons - larger touch targets */
    .radio-group {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .radio-label {
        padding: var(--spacing-md);
        background: var(--color-bg);
        border-radius: var(--radius-md);
        border: 1px solid var(--color-border);
        transition: all 0.2s;
    }

    .radio-label:has(input:checked) {
        border-color: var(--color-primary);
        background: rgba(233, 69, 96, 0.1);
    }

    /* Language toggle - more compact on mobile */
    .language-toggle {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .language-toggle .radio-label {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    /* Card padding */
    .card {
        padding: var(--spacing-md);
        margin-bottom: var(--spacing-md);
    }

    .card-title {
        font-size: 1.2rem;
    }

    /* AI content scrolling */
    .ai-content {
        max-height: 60vh;
        padding: var(--spacing-md);
    }

    /* Feature hints */
    .hint {
        padding: var(--spacing-sm);
    }

    .hint-text {
        font-size: 0.85rem;
    }

    /* Feedback buttons inline on mobile */
    .feedback-divider {
        display: none;
    }

    .feedback-label {
        display: none;
    }
}

/* Extra small devices (phones in portrait) */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.3rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

    .form-label {
        font-size: 0.9rem;
    }

    .btn {
        font-size: 0.9rem;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .btn-full {
        font-size: 1rem;
    }

    /* Stack date and time vertically */
    .form-row {
        gap: var(--spacing-sm);
    }
}

/* ==================== Print Styles ==================== */
@media print {

    .header,
    .footer,
    .form,
    .button-group,
    .ai-toggle,
    .ai-notice,
    .result-actions,
    .ai-usage {
        display: none !important;
    }

    .ai-card {
        border: none;
        background: white;
    }

    .ai-content {
        max-height: none;
        overflow: visible;
        background: white;
        color: black;
    }

    .ai-content h1,
    .ai-content h2,
    .ai-content h3 {
        color: black;
    }
}

/* ==================== Feedback Buttons ==================== */
.feedback-divider {
    color: var(--color-border);
    margin: 0 var(--spacing-sm);
}

.feedback-label {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.btn-feedback {
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s;
    min-height: auto;
}

.btn-feedback:hover:not(:disabled) {
    transform: scale(1.1);
    border-color: var(--color-accent);
}

.btn-feedback:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-feedback-active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    transform: scale(1.1);
}

.feedback-thanks {
    color: var(--color-success);
    font-size: 0.9rem;
    margin-left: var(--spacing-sm);
}