/* ===== CSS Variables - Light Theme ===== */
:root {
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-card: #f0f4f8;
    --bg-card-hover: #e8eef4;

    --text-primary: #1a1a2e;
    --text-secondary: #4a5568;
    --text-muted: #718096;

    --accent-gold: #d4a012;
    --accent-red: #c53030;
    --accent-green: #38a169;
    --accent-blue: #3182ce;
    --accent-purple: #805ad5;

    --gradient-gold: linear-gradient(135deg, #f6d365, #d4a012);
    --gradient-red: linear-gradient(135deg, #fc8181, #c53030);
    --gradient-green: linear-gradient(135deg, #68d391, #38a169);

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    --border-color: #e2e8f0;
    --border-radius: 12px;
    --border-radius-lg: 20px;

    --font-primary: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;
}

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

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

body {
    font-family: var(--font-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    /* Aged paper background like traditional wall calendar */
    background:
        /* Paper texture effect */
        repeating-linear-gradient(0deg,
            transparent,
            transparent 2px,
            rgba(139, 69, 19, 0.01) 2px,
            rgba(139, 69, 19, 0.01) 4px),
        /* Main aged paper gradient */
        linear-gradient(180deg,
            #fdf8f0 0%,
            #faf5e8 20%,
            #f8f0dc 40%,
            #f5edd5 60%,
            #f3e9cf 80%,
            #f0e5c8 100%);
    background-attachment: fixed;
}

/* ===== Traditional Calendar Frame & Decorations ===== */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: -1;
    /* Decorative corner ornaments */
    background:
        /* Top left corner ornament */
        radial-gradient(ellipse 120px 120px at 0% 0%,
            rgba(197, 48, 48, 0.08) 0%,
            rgba(197, 48, 48, 0.04) 30%,
            transparent 70%),
        /* Top right corner ornament */
        radial-gradient(ellipse 120px 120px at 100% 0%,
            rgba(197, 48, 48, 0.08) 0%,
            rgba(197, 48, 48, 0.04) 30%,
            transparent 70%),
        /* Bottom left corner ornament */
        radial-gradient(ellipse 100px 100px at 0% 100%,
            rgba(212, 160, 18, 0.1) 0%,
            rgba(212, 160, 18, 0.05) 30%,
            transparent 70%),
        /* Bottom right corner ornament */
        radial-gradient(ellipse 100px 100px at 100% 100%,
            rgba(212, 160, 18, 0.1) 0%,
            rgba(212, 160, 18, 0.05) 30%,
            transparent 70%),
        /* Subtle vignette effect */
        radial-gradient(ellipse 80% 80% at 50% 50%,
            transparent 50%,
            rgba(139, 69, 19, 0.04) 100%);
}

/* ===== Decorative Border Frame ===== */
body::after {
    content: '';
    position: fixed;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    border: 3px solid rgba(197, 48, 48, 0.2);
    border-radius: 4px;
    pointer-events: none;
    z-index: 9999;
    /* Double border effect */
    box-shadow:
        inset 0 0 0 5px rgba(255, 255, 255, 0.6),
        inset 0 0 0 8px rgba(212, 160, 18, 0.15),
        0 0 20px rgba(139, 69, 19, 0.1);
}

@media (max-width: 640px) {
    body::after {
        top: 4px;
        left: 4px;
        right: 4px;
        bottom: 4px;
        border-width: 2px;
        box-shadow:
            inset 0 0 0 3px rgba(255, 255, 255, 0.5),
            inset 0 0 0 5px rgba(212, 160, 18, 0.12);
    }
}

/* ===== Main Header Styles ===== */
.main-header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.header-logo img {
    height: 60px;
    width: auto;
    display: block;
}

.header-nav ul {
    list-style: none;
    display: flex;
    gap: 25px;
    margin: 0;
    padding: 0;
    align-items: center;
}

.header-nav a {
    text-decoration: none;
    color: #333;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.header-nav a:hover {
    color: #c53030;
}

/* Submenu - Mega Menu Style */
.has-submenu {
    position: relative;
}

.submenu {
    position: absolute;
    top: 100%;
    left: -100px;
    background: #fff;
    min-width: 280px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    border-radius: 12px;
    padding: 15px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition: all 0.25s cubic-bezier(0.165, 0.84, 0.44, 1);
    display: flex;
    flex-direction: column;
    gap: 5px;
    border: 1px solid rgba(0, 0, 0, 0.05);
    z-index: 1100;
}

.has-submenu:hover .submenu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.submenu li {
    display: block;
    margin: 0;
    padding: 0;
    border: none;
}

.submenu a {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    font-size: 0.9rem;
    color: #4a5568 !important;
    font-weight: 500;
    border-radius: 8px;
    transition: all 0.2s ease;
    text-align: left;
    background: transparent;
}

.submenu a:hover {
    background: #fff5f5;
    color: #c53030 !important;
    transform: translateX(5px);
}

/* Submenu Arrow */
.submenu::before {
    content: "";
    position: absolute;
    top: -6px;
    left: 140px;
    width: 12px;
    height: 12px;
    background: #fff;
    transform: rotate(45deg);
    border-left: 1px solid rgba(0, 0, 0, 0.05);
    border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.btn-cta {
    background: #c53030;
    color: #fff !important;
    padding: 10px 20px;
    border-radius: 25px;
    font-weight: 700 !important;
    box-shadow: 0 4px 10px rgba(197, 48, 48, 0.3);
    transition: all 0.3s;
}

.btn-cta:hover {
    background: #a02828;
    transform: translateY(-2px);
}

/* ===== Main Footer Styles ===== */
.main-footer {
    background: #fff;
    padding: 60px 20px;
    margin-top: 40px;
    border-top: 1px solid #eee;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    justify-content: space-between;
}

.footer-col {
    flex: 1;
    min-width: 200px;
}

.footer-col h4 {
    color: #333;
    margin-bottom: 25px;
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.footer-col ul {
    list-style: none;
    padding: 0;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col a {
    text-decoration: none;
    color: #666;
    font-size: 0.9rem;
    position: relative;
    padding-left: 20px;
    transition: all 0.2s;
}

.footer-col a::before {
    content: "➥";
    position: absolute;
    left: 0;
    color: #c53030;
    font-size: 0.7rem;
    top: 2px;
}

.footer-col a:hover {
    color: #c53030;
    padding-left: 25px;
}

.footer-col a i {
    margin-right: 5px;
}

.footer-qr img {
    max-width: 150px;
    height: auto;
    border: 1px solid #eee;
    padding: 5px;
    border-radius: 8px;
}

.footer-disclaimer {
    max-width: 1200px;
    margin: 40px auto 0;
    padding-top: 20px;
    border-top: 1px solid #edf2f7;
    text-align: center;
    font-size: 0.85rem;
    color: #718096;
    line-height: 1.6;
}

.footer-disclaimer p {
    margin-bottom: 5px;
}

.footer-disclaimer strong {
    color: #4a5568;
}

.footer-disclaimer a {
    color: #c53030;
    font-weight: 600;
}

/* Header & Footer Responsive */
@media (max-width: 900px) {
    .header-nav {
        display: none;
    }

    .header-cta {
        display: none;
    }

    .header-container {
        justify-content: center;
    }

    .footer-container {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }

    .footer-col a {
        padding-left: 0;
    }

    .footer-col a::before {
        display: none;
    }
}

a {
    color: inherit;
    text-decoration: none;
}

/* ===== Container - Fluid & Responsive ===== */
.container {
    width: 100%;
    max-width: 960px;
    margin: 0 auto;
    padding: 16px;
}

@media (min-width: 640px) {
    .container {
        padding: 24px;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 32px;
    }
}

/* ===== Hero Section ===== */
.hero-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: 24px;
    margin-bottom: 20px;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

@media (min-width: 640px) {
    .hero-section {
        padding: 32px;
        margin-bottom: 24px;
    }
}

@media (min-width: 768px) {
    .hero-section {
        padding: 40px;
        margin-bottom: 30px;
    }
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-red);
}

.hero-content {
    text-align: center;
}

.today-badge {
    display: inline-block;
    background: var(--gradient-red);
    color: #fff;
    font-weight: 600;
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 0.85rem;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

@media (min-width: 640px) {
    .today-badge {
        font-size: 0.9rem;
        margin-bottom: 25px;
    }
}

.main-date-display {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 16px;
}

@media (min-width: 640px) {
    .main-date-display {
        flex-direction: row;
        gap: 40px;
        margin-bottom: 20px;
    }
}

.solar-date {
    display: flex;
    align-items: center;
    gap: 12px;
}

@media (min-width: 640px) {
    .solar-date {
        gap: 15px;
    }
}

.day-big {
    font-family: var(--font-display);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--accent-red);
    line-height: 1;
}

@media (min-width: 640px) {
    .day-big {
        font-size: 4.5rem;
    }
}

@media (min-width: 768px) {
    .day-big {
        font-size: 5rem;
    }
}

.month-year {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.month {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

@media (min-width: 640px) {
    .month {
        font-size: 1.5rem;
    }
}

.year {
    font-size: 1rem;
    color: var(--text-secondary);
}

@media (min-width: 640px) {
    .year {
        font-size: 1.2rem;
    }
}

.date-divider {
    display: none;
    width: 2px;
    height: 80px;
    background: linear-gradient(to bottom, transparent, var(--accent-red), transparent);
}

@media (min-width: 640px) {
    .date-divider {
        display: block;
    }
}

.lunar-date {
    display: flex;
    align-items: center;
    gap: 12px;
}

@media (min-width: 640px) {
    .lunar-date {
        gap: 15px;
    }
}

.lunar-day {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lunar-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--accent-gold);
    line-height: 1;
}

@media (min-width: 640px) {
    .lunar-number {
        font-size: 3rem;
    }
}

@media (min-width: 768px) {
    .lunar-number {
        font-size: 3.5rem;
    }
}

.lunar-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
}

@media (min-width: 640px) {
    .lunar-label {
        font-size: 0.8rem;
    }
}

.lunar-month-year {
    text-align: left;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

@media (min-width: 640px) {
    .lunar-month-year {
        font-size: 1rem;
    }
}

.weekday {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

@media (min-width: 640px) {
    .weekday {
        font-size: 1.3rem;
        margin-bottom: 25px;
    }
}

/* ===== Zodiac Display ===== */
.zodiac-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: var(--gradient-gold);
    padding: 16px 24px;
    border-radius: var(--border-radius-lg);
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
}

@media (min-width: 640px) {
    .zodiac-display {
        gap: 24px;
        padding: 20px 32px;
        margin-bottom: 25px;
    }
}

.zodiac-emoji {
    font-size: 3.5rem;
    line-height: 1;
    filter: drop-shadow(2px 2px 4px rgba(0, 0, 0, 0.3));
    animation: zodiacBounce 2s ease-in-out infinite;
}

@media (min-width: 640px) {
    .zodiac-emoji {
        font-size: 4.5rem;
    }
}

@media (min-width: 768px) {
    .zodiac-emoji {
        font-size: 5rem;
    }
}

@keyframes zodiacBounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-6px);
    }
}

/* SEO H1 Heading */
.seo-h1 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 15px;
    line-height: 1.4;
}

@media (min-width: 640px) {
    .seo-h1 {
        font-size: 1.2rem;
        margin-bottom: 20px;
    }
}

@media (min-width: 768px) {
    .seo-h1 {
        font-size: 1.4rem;
    }
}

.zodiac-info {
    text-align: left;
    color: #1a1a2e;
}

.zodiac-year {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 4px;
}

@media (min-width: 640px) {
    .zodiac-year {
        font-size: 1.3rem;
        margin-bottom: 6px;
    }
}

.zodiac-desc {
    font-size: 0.85rem;
    opacity: 0.85;
    margin-bottom: 4px;
}

@media (min-width: 640px) {
    .zodiac-desc {
        font-size: 0.95rem;
        margin-bottom: 5px;
    }
}

.zodiac-lunar-year {
    font-size: 0.8rem;
    font-weight: 600;
    opacity: 0.7;
}

@media (min-width: 640px) {
    .zodiac-lunar-year {
        font-size: 0.9rem;
    }
}

.canchi-display {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-bottom: 20px;
}

@media (min-width: 640px) {
    .canchi-display {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin-bottom: 25px;
    }
}

@media (min-width: 768px) {
    .canchi-display {
        gap: 30px;
    }
}

.canchi-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background: var(--bg-card);
    padding: 10px 12px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

@media (min-width: 640px) {
    .canchi-item {
        padding: 15px 25px;
        min-width: 120px;
    }
}

.canchi-label {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

@media (min-width: 640px) {
    .canchi-label {
        font-size: 0.75rem;
        margin-bottom: 5px;
    }
}

.canchi-value {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-red);
}

@media (min-width: 640px) {
    .canchi-value {
        font-size: 1.1rem;
    }
}

.extra-info {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

@media (min-width: 640px) {
    .extra-info {
        gap: 15px;
    }
}

.info-chip {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-card);
    padding: 8px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

@media (min-width: 640px) {
    .info-chip {
        gap: 8px;
        padding: 10px 20px;
        font-size: 0.9rem;
    }
}

.chip-icon {
    font-size: 1rem;
}

@media (min-width: 640px) {
    .chip-icon {
        font-size: 1.1rem;
    }
}

/* ===== Calendar Section ===== */
.calendar-section {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: 16px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

@media (min-width: 640px) {
    .calendar-section {
        padding: 24px;
        margin-bottom: 24px;
    }
}

@media (min-width: 768px) {
    .calendar-section {
        padding: 30px;
        margin-bottom: 30px;
    }
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

@media (min-width: 640px) {
    .calendar-header {
        margin-bottom: 25px;
    }
}

.nav-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border-radius: 50%;
    font-size: 1rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

@media (min-width: 640px) {
    .nav-btn {
        width: 45px;
        height: 45px;
        font-size: 1.2rem;
    }
}

.nav-btn:hover {
    background: var(--accent-red);
    color: #fff;
    border-color: var(--accent-red);
    transform: scale(1.05);
}

.calendar-title {
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--text-primary);
}

@media (min-width: 640px) {
    .calendar-title {
        font-size: 1.5rem;
    }
}

.calendar-grid {
    margin-bottom: 16px;
}

@media (min-width: 640px) {
    .calendar-grid {
        margin-bottom: 20px;
    }
}

.weekday-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin-bottom: 8px;
}

@media (min-width: 640px) {
    .weekday-header {
        gap: 8px;
        margin-bottom: 10px;
    }
}

.weekday-header span {
    text-align: center;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-muted);
    padding: 8px 4px;
}

@media (min-width: 640px) {
    .weekday-header span {
        font-size: 0.85rem;
        padding: 10px;
    }
}

.weekday-header .weekend {
    color: var(--accent-red);
}

.week-row {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin-bottom: 4px;
}

@media (min-width: 640px) {
    .week-row {
        gap: 8px;
        margin-bottom: 8px;
    }
}

.day-cell {
    position: relative;
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border-radius: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
    padding: 2px;
    border: 1px solid transparent;
}

@media (min-width: 640px) {
    .day-cell {
        border-radius: var(--border-radius);
        padding: 5px;
    }
}

.day-cell:hover:not(.empty) {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--border-color);
}

.day-cell.empty {
    background: transparent;
    cursor: default;
    border: none;
}

.day-cell.today {
    background: var(--accent-red);
    border-color: var(--accent-red);
}

.day-cell.today .solar-day,
.day-cell.today .lunar-small {
    color: #fff;
}

.day-cell.today .good-dot {
    color: rgba(255, 255, 255, 0.8);
}

.day-cell.selected {
    border: 2px solid var(--accent-gold);
    box-shadow: 0 0 12px rgba(212, 160, 18, 0.3);
}

.day-cell.weekend .solar-day {
    color: var(--accent-red);
}

.solar-day {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1;
}

@media (min-width: 640px) {
    .solar-day {
        font-size: 1.1rem;
    }
}

.lunar-small {
    font-size: 0.55rem;
    color: var(--text-muted);
    margin-top: 2px;
}

@media (min-width: 640px) {
    .lunar-small {
        font-size: 0.7rem;
        margin-top: 3px;
    }
}

.good-dot {
    font-size: 0.7rem;
    color: var(--accent-green);
    text-shadow: 0 0 2px rgba(56, 161, 105, 0.5);
}

@media (min-width: 640px) {
    .good-dot {
        font-size: 0.9rem;
    }
}

/* Day Can Chi text */
.day-chi {
    font-size: 0.5rem;
    color: var(--text-muted);
    margin-top: 1px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@media (min-width: 640px) {
    .day-chi {
        font-size: 0.6rem;
        margin-top: 2px;
    }
}

/* ===== Holiday Styles ===== */
/* Ngày lễ - không thay đổi nền, chỉ hiển thị tên lễ */
.day-cell.holiday,
.day-cell.major-holiday {
    /* Giữ nguyên background như các ô khác */
}

/* Tên ngày lễ */
.holiday-name {
    font-size: 0.45rem;
    color: var(--accent-red);
    font-weight: 600;
    margin-top: 1px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    padding: 0 2px;
    line-height: 1.2;
}

@media (min-width: 480px) {
    .holiday-name {
        font-size: 0.5rem;
    }
}

@media (min-width: 640px) {
    .holiday-name {
        font-size: 0.55rem;
        margin-top: 2px;
    }
}

@media (min-width: 768px) {
    .holiday-name {
        font-size: 0.6rem;
    }
}

/* Holiday on today */
.day-cell.today .holiday-name {
    color: rgba(255, 255, 255, 0.95);
}

/* Day indicators container */
.day-indicators {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    margin-top: 2px;
}

@media (min-width: 640px) {
    .day-indicators {
        gap: 4px;
        margin-top: 3px;
    }
}

/* Day zodiac emoji */
.day-zodiac-emoji {
    font-size: 0.75rem;
    line-height: 1;
}

@media (min-width: 640px) {
    .day-zodiac-emoji {
        font-size: 1rem;
    }
}

/* Today cell adjustments */
.day-cell.today .day-chi {
    color: rgba(255, 255, 255, 0.8);
}

.calendar-legend {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

@media (min-width: 640px) {
    .calendar-legend {
        gap: 25px;
    }
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

@media (min-width: 640px) {
    .legend-item {
        gap: 8px;
        font-size: 0.85rem;
    }
}

.legend-dot {
    font-size: 0.7rem;
}

@media (min-width: 640px) {
    .legend-dot {
        font-size: 0.8rem;
    }
}

.legend-dot.good {
    color: var(--accent-green);
}

.legend-box {
    width: 16px;
    height: 16px;
    border-radius: 4px;
}

@media (min-width: 640px) {
    .legend-box {
        width: 20px;
        height: 20px;
    }
}

.today-box {
    background: var(--accent-red);
}

.selected-box {
    border: 2px solid var(--accent-gold);
    background: var(--bg-card);
}

/* ===== Hours Section ===== */
.hours-section {
    margin-bottom: 20px;
}

@media (min-width: 640px) {
    .hours-section {
        margin-bottom: 30px;
    }
}

.section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-display);
    font-size: 1.2rem;
    color: var(--text-primary);
    margin-bottom: 16px;
}

@media (min-width: 640px) {
    .section-title {
        gap: 10px;
        font-size: 1.4rem;
        margin-bottom: 20px;
    }
}

.title-icon {
    font-size: 1.1rem;
}

@media (min-width: 640px) {
    .title-icon {
        font-size: 1.3rem;
    }
}

.hours-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 640px) {
    .hours-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

.hours-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

@media (min-width: 640px) {
    .hours-card {
        padding: 25px;
    }
}

.hours-card h3 {
    font-size: 1rem;
    margin-bottom: 6px;
    color: var(--text-primary);
}

@media (min-width: 640px) {
    .hours-card h3 {
        font-size: 1.2rem;
        margin-bottom: 8px;
    }
}

.hours-desc {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

@media (min-width: 640px) {
    .hours-desc {
        font-size: 0.85rem;
        margin-bottom: 20px;
    }
}

.good-hours {
    border-left: 4px solid var(--accent-green);
}

.bad-hours {
    border-left: 4px solid var(--accent-red);
}

.hours-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

@media (min-width: 640px) {
    .hours-list {
        gap: 12px;
    }
}

.hour-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-card);
    padding: 10px 12px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

@media (min-width: 640px) {
    .hour-item {
        padding: 12px 15px;
    }
}

.hour-chi {
    font-weight: 600;
    color: var(--accent-red);
    font-size: 0.85rem;
}

@media (min-width: 640px) {
    .hour-chi {
        font-size: 1rem;
    }
}

.hour-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

@media (min-width: 640px) {
    .hour-time {
        font-size: 0.85rem;
    }
}

/* ===== Analysis Section ===== */
.analysis-section {
    margin-bottom: 20px;
}

@media (min-width: 640px) {
    .analysis-section {
        margin-bottom: 30px;
    }
}

.analysis-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 640px) {
    .analysis-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

.analysis-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.analysis-card.full-width {
    grid-column: 1 / -1;
}

.card-header {
    background: var(--bg-card);
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

@media (min-width: 640px) {
    .card-header {
        padding: 15px 20px;
    }
}

.card-header h3 {
    font-size: 0.9rem;
    color: var(--text-primary);
}

@media (min-width: 640px) {
    .card-header h3 {
        font-size: 1rem;
    }
}

.card-content {
    padding: 16px;
}

@media (min-width: 640px) {
    .card-content {
        padding: 20px;
    }
}

/* Overview Card */
.rating-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-radius: var(--border-radius);
    margin-bottom: 12px;
}

@media (min-width: 640px) {
    .rating-display {
        padding: 15px 20px;
        margin-bottom: 15px;
    }
}

.rating-display.tốt {
    background: rgba(56, 161, 105, 0.1);
    border: 1px solid var(--accent-green);
}

.rating-display.xấu {
    background: rgba(197, 48, 48, 0.1);
    border: 1px solid var(--accent-red);
}

.rating-display.bình-thường {
    background: rgba(49, 130, 206, 0.1);
    border: 1px solid var(--accent-blue);
}

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

.rating-value {
    font-weight: 700;
    font-size: 1.1rem;
}

@media (min-width: 640px) {
    .rating-value {
        font-size: 1.2rem;
    }
}

.rating-display.tốt .rating-value {
    color: var(--accent-green);
}

.rating-display.xấu .rating-value {
    color: var(--accent-red);
}

.rating-display.bình-thường .rating-value {
    color: var(--accent-blue);
}

.warning-badge {
    background: rgba(197, 48, 48, 0.1);
    border: 1px solid var(--accent-red);
    padding: 10px 12px;
    border-radius: var(--border-radius);
    color: var(--accent-red);
    font-size: 0.85rem;
    margin-bottom: 8px;
}

@media (min-width: 640px) {
    .warning-badge {
        padding: 10px 15px;
        font-size: 0.9rem;
        margin-bottom: 10px;
    }
}

/* Lục Diệu */
.luc-dieu-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent-red);
    margin-bottom: 4px;
}

@media (min-width: 640px) {
    .luc-dieu-name {
        font-size: 1.5rem;
        margin-bottom: 5px;
    }
}

.luc-dieu-meaning {
    font-size: 0.9rem;
    color: var(--accent-green);
    margin-bottom: 8px;
}

@media (min-width: 640px) {
    .luc-dieu-meaning {
        font-size: 1rem;
        margin-bottom: 10px;
    }
}

.luc-dieu-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

@media (min-width: 640px) {
    .luc-dieu-desc {
        font-size: 0.9rem;
    }
}

/* Star */
.star-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-red);
    margin-bottom: 8px;
}

@media (min-width: 640px) {
    .star-name {
        font-size: 1.3rem;
        margin-bottom: 10px;
    }
}

.star-info {
    margin-bottom: 12px;
}

@media (min-width: 640px) {
    .star-info {
        margin-bottom: 15px;
    }
}

.star-meaning {
    color: var(--text-primary);
    margin-right: 8px;
    font-size: 0.9rem;
}

.star-animal {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.star-quality {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

@media (min-width: 640px) {
    .star-quality {
        padding: 8px 15px;
        font-size: 0.9rem;
    }
}

.star-quality.cát {
    background: rgba(56, 161, 105, 0.15);
    color: var(--accent-green);
}

.star-quality.hung {
    background: rgba(197, 48, 48, 0.15);
    color: var(--accent-red);
}

/* Kiến Trừ */
.kien-tru-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-red);
    margin-bottom: 6px;
}

@media (min-width: 640px) {
    .kien-tru-name {
        font-size: 1.3rem;
        margin-bottom: 8px;
    }
}

.kien-tru-quality {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 10px;
}

@media (min-width: 640px) {
    .kien-tru-quality {
        padding: 5px 15px;
        font-size: 0.85rem;
        margin-bottom: 12px;
    }
}

.kien-tru-quality.tốt {
    background: rgba(56, 161, 105, 0.15);
    color: var(--accent-green);
}

.kien-tru-quality.xấu {
    background: rgba(197, 48, 48, 0.15);
    color: var(--accent-red);
}

.kien-tru-quality.bình {
    background: rgba(49, 130, 206, 0.15);
    color: var(--accent-blue);
}

.kien-tru-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

@media (min-width: 640px) {
    .kien-tru-desc {
        font-size: 0.9rem;
    }
}

/* Bách Kỵ */
.bach-ky-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

@media (min-width: 640px) {
    .bach-ky-list {
        gap: 15px;
    }
}

.bach-ky-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

@media (min-width: 640px) {
    .bach-ky-item {
        gap: 5px;
    }
}

.bach-ky-label {
    font-weight: 600;
    color: var(--accent-red);
    font-size: 0.85rem;
}

@media (min-width: 640px) {
    .bach-ky-label {
        font-size: 0.9rem;
    }
}

.bach-ky-text {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.5;
}

@media (min-width: 640px) {
    .bach-ky-text {
        font-size: 0.95rem;
    }
}

/* ===== Quick Nav Section ===== */
.quick-nav-section {
    margin-bottom: 20px;
}

@media (min-width: 640px) {
    .quick-nav-section {
        margin-bottom: 30px;
    }
}

.quick-nav-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

@media (min-width: 640px) {
    .quick-nav-grid {
        gap: 10px;
        margin-bottom: 20px;
    }
}

.quick-nav-btn {
    padding: 8px 14px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

@media (min-width: 640px) {
    .quick-nav-btn {
        padding: 10px 18px;
        font-size: 0.9rem;
    }
}

.quick-nav-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.quick-nav-btn.active {
    background: var(--accent-red);
    color: #fff;
    font-weight: 600;
    border-color: var(--accent-red);
}

.quick-nav-btn.today-btn {
    background: var(--accent-gold);
    color: #fff;
    font-weight: 600;
    border-color: var(--accent-gold);
}

.year-selector {
    display: flex;
    align-items: center;
    gap: 12px;
}

@media (min-width: 640px) {
    .year-selector {
        gap: 15px;
    }
}

.year-selector label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.year-selector select {
    padding: 10px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
}

@media (min-width: 640px) {
    .year-selector select {
        padding: 12px 20px;
        font-size: 1rem;
    }
}

.year-selector select:focus {
    outline: none;
    border-color: var(--accent-red);
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-section,
.calendar-section,
.hours-section,
.analysis-section,
.quick-nav-section {
    animation: fadeIn 0.5s ease-out;
}

.analysis-card {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.analysis-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

/* ===== Print Styles ===== */
@media print {
    body {
        background: #fff;
    }

    .hero-section,
    .calendar-section,
    .hours-card,
    .analysis-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }

    .quick-nav-section {
        display: none;
    }
}

/* ===== Direction Styles ===== */
.direction-value {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

@media (min-width: 640px) {
    .direction-value {
        font-size: 1.8rem;
        margin-bottom: 10px;
    }
}

.direction-value.good {
    color: var(--accent-green);
}

.direction-value.bad {
    color: var(--accent-red);
}

.direction-desc {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.5;
}

@media (min-width: 640px) {
    .direction-desc {
        font-size: 0.9rem;
    }
}

/* ===== Ngũ Hành Styles ===== */
.ngu-hanh-display {
    display: flex;
    gap: 15px;
    margin-bottom: 12px;
}

.hanh-item {
    display: flex;
    gap: 8px;
    align-items: center;
}

.hanh-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.hanh-value {
    font-weight: 600;
    color: var(--accent-red);
    font-size: 0.95rem;
}

.nap-am-display {
    background: var(--bg-card);
    padding: 10px 15px;
    border-radius: var(--border-radius);
    margin-bottom: 10px;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
}

.nap-am-display strong {
    color: var(--accent-gold);
}

.relationship-display {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.day-type-display {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
}

.day-type-display.good {
    background: rgba(56, 161, 105, 0.15);
    color: var(--accent-green);
}

.day-type-display.bad {
    background: rgba(197, 48, 48, 0.15);
    color: var(--accent-red);
}

.day-type-display.neutral {
    background: rgba(49, 130, 206, 0.15);
    color: var(--accent-blue);
}

/* ===== Sao List Styles ===== */
.sao-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sao-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 10px 12px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

@media (min-width: 640px) {
    .sao-item {
        padding: 12px 15px;
    }
}

.sao-item.good {
    background: rgba(56, 161, 105, 0.05);
    border-left: 3px solid var(--accent-green);
}

.sao-item.bad {
    background: rgba(197, 48, 48, 0.05);
    border-left: 3px solid var(--accent-red);
}

.sao-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.sao-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ===== Star Detail ===== */
.star-detail {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.star-detail p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    line-height: 1.5;
}

.star-good {
    color: var(--accent-green) !important;
}

.star-bad {
    color: var(--accent-red) !important;
}

/* ===== Warning Badge Severity ===== */
.warning-badge.severity-high {
    background: rgba(197, 48, 48, 0.15);
    border-color: var(--accent-red);
    color: var(--accent-red);
}

.warning-badge.severity-medium {
    background: rgba(212, 160, 18, 0.15);
    border-color: var(--accent-gold);
    color: #b8860b;
}

.warning-badge.severity-low {
    background: rgba(49, 130, 206, 0.1);
    border-color: var(--accent-blue);
    color: var(--accent-blue);
}

.warning-badge.severity-info {
    background: rgba(128, 90, 213, 0.1);
    border-color: var(--accent-purple);
    color: var(--accent-purple);
}

.warning-badge.severity-good {
    background: rgba(56, 161, 105, 0.1);
    border-color: var(--accent-green);
    color: var(--accent-green);
}

/* ===== Lý Thuần Phong Grid ===== */
.ly-thun-phuong-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

@media (min-width: 640px) {
    .ly-thun-phuong-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
}

@media (min-width: 1024px) {
    .ly-thun-phuong-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.ltp-item {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 15px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

@media (min-width: 640px) {
    .ltp-item {
        padding: 18px;
    }
}

.ltp-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.ltp-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.ltp-chi {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent-red);
}

@media (min-width: 640px) {
    .ltp-chi {
        font-size: 1.2rem;
    }
}

.ltp-time {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--bg-card);
    padding: 4px 10px;
    border-radius: 50px;
}

@media (min-width: 640px) {
    .ltp-time {
        font-size: 0.85rem;
    }
}

.ltp-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

@media (min-width: 640px) {
    .ltp-desc {
        font-size: 0.88rem;
    }
}

/* ===== Analysis Grid 4 columns for directions ===== */
@media (min-width: 768px) {
    .analysis-section:first-of-type .analysis-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}