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

/* Biến màu sắc truyền thống cho giỗ tổ Hùng Vương */
:root {
    --primary-red: #DC143C;      /* Đỏ son truyền thống */
    --secondary-gold: #FFD700;    /* Vàng hoàng gia */
    --dark-brown: #8B4513;        /* Nâu gỗ cổ */
    --light-beige: #F5DEB3;       /* Be nhạt */
    --text-dark: #2F1B14;         /* Nâu đậm cho text */
    --bg-light: #FFF8DC;          /* Nền kem nhạt */
    --accent-green: #228B22;      /* Xanh lá cờ */
    --shadow-dark: rgba(47, 27, 20, 0.3);
    --shadow-light: rgba(255, 215, 0, 0.2);
    --lotus-pink: #FFB6C1;        /* Hồng sen */
    --bronze-drum: #B87333;       /* Đồng trống đồng */
}

/* Typography - Thêm font thư pháp Việt Nam */
@import url('https://fonts.googleapis.com/css2?family=Philosopher:wght@400;700&family=Dancing+Script:wght@700&family=Playfair+Display:wght@400;700&display=swap');

/* Custom Font cho tiêu đề chính */
@font-face {
    font-family: 'VietnamCalligraphy';
    src: url('data:font/woff2;base64,') format('woff2');
    font-display: swap;
}

/* Animations văn hóa */
@keyframes trongDongBeat {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.1; }
    50% { transform: scale(1.1) rotate(5deg); opacity: 0.2; }
}

@keyframes chimLacFly {
    0% { transform: translateX(-100px) translateY(0) rotate(-10deg); }
    25% { transform: translateX(50px) translateY(-30px) rotate(5deg); }
    50% { transform: translateX(200px) translateY(10px) rotate(-5deg); }
    75% { transform: translateX(350px) translateY(-20px) rotate(10deg); }
    100% { transform: translateX(500px) translateY(0) rotate(-10deg); }
}

@keyframes hoaSenBloom {
    0% { transform: scale(0.8) rotate(0deg); opacity: 0.5; }
    50% { transform: scale(1.2) rotate(180deg); opacity: 0.8; }
    100% { transform: scale(1) rotate(360deg); opacity: 0.5; }
}

@keyframes coVietNamWave {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-10px) rotate(2deg); }
    75% { transform: translateY(5px) rotate(-2deg); }
}

@keyframes fireGlow {
    0%, 100% { 
        box-shadow: 
            0 0 20px rgba(255, 69, 0, 0.5),
            0 0 40px rgba(255, 140, 0, 0.3),
            0 0 60px rgba(255, 215, 0, 0.2);
    }
    50% { 
        box-shadow: 
            0 0 30px rgba(255, 69, 0, 0.7),
            0 0 60px rgba(255, 140, 0, 0.5),
            0 0 90px rgba(255, 215, 0, 0.3);
    }
}

body {
    font-family: 'Philosopher', Georgia, serif;
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Background với họa tiết trống đồng */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 400 400"><circle cx="200" cy="200" r="180" fill="none" stroke="%23B87333" stroke-width="2" opacity="0.1"/><circle cx="200" cy="200" r="150" fill="none" stroke="%23B87333" stroke-width="1.5" opacity="0.1"/><circle cx="200" cy="200" r="120" fill="none" stroke="%23B87333" stroke-width="1" opacity="0.1"/><path d="M200,50 L250,150 L350,150 L275,220 L325,320 L200,250 L75,320 L125,220 L50,150 L150,150 Z" fill="none" stroke="%23FFD700" stroke-width="1" opacity="0.1"/><circle cx="100" cy="100" r="30" fill="none" stroke="%23DC143C" stroke-width="1" opacity="0.05"/><circle cx="300" cy="100" r="30" fill="none" stroke="%23DC143C" stroke-width="1" opacity="0.05"/><circle cx="100" cy="300" r="30" fill="none" stroke="%23DC143C" stroke-width="1" opacity="0.05"/><circle cx="300" cy="300" r="30" fill="none" stroke="%23DC143C" stroke-width="1" opacity="0.05"/></svg>') center/600px 600px,
        radial-gradient(circle at 20% 50%, rgba(255, 215, 0, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(220, 20, 60, 0.05) 0%, transparent 50%);
    z-index: -2;
    animation: trongDongBeat 4s ease-in-out infinite;
}

/* Chim Lạc bay */
body::after {
    content: '🦅';
    position: fixed;
    top: 100px;
    left: -100px;
    font-size: 60px;
    opacity: 0.15;
    z-index: -1;
    animation: chimLacFly 20s linear infinite;
    filter: sepia(1) hue-rotate(10deg);
}

/* Hoa sen nở */
.lotus-decoration {
    position: fixed;
    width: 80px;
    height: 80px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><path d="M50,20 Q30,40 20,60 Q35,50 50,50 Q65,50 80,60 Q70,40 50,20" fill="%23FFB6C1" opacity="0.3"/><path d="M50,30 Q35,45 25,60 Q40,55 50,55 Q60,55 75,60 Q65,45 50,30" fill="%23FFB6C1" opacity="0.4"/><circle cx="50" cy="60" r="8" fill="%23FFD700" opacity="0.5"/></svg>') center/contain no-repeat;
    pointer-events: none;
    z-index: -1;
}

.lotus-1 {
    top: 20%;
    right: 5%;
    animation: hoaSenBloom 8s ease-in-out infinite;
}

.lotus-2 {
    bottom: 20%;
    left: 5%;
    animation: hoaSenBloom 8s ease-in-out infinite 2s;
}

.lotus-3 {
    top: 60%;
    right: 10%;
    transform: scale(0.6);
    animation: hoaSenBloom 8s ease-in-out infinite 4s;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
}

/* Header với hiệu ứng ngọn lửa thiêng */
header {
    text-align: center;
    padding: 80px 40px;
    background: 
        linear-gradient(135deg, 
            var(--primary-red) 0%, 
            var(--dark-brown) 25%, 
            var(--bronze-drum) 50%, 
            var(--dark-brown) 75%, 
            var(--primary-red) 100%);
    color: white;
    border-radius: 30px 30px 200px 200px / 30px 30px 50px 50px;
    box-shadow: 
        0 30px 60px var(--shadow-dark),
        inset 0 -5px 20px rgba(0, 0, 0, 0.3),
        inset 0 5px 20px rgba(255, 215, 0, 0.2);
    margin-bottom: 60px;
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    animation: fireGlow 3s ease-in-out infinite;
}

/* Cờ Việt Nam */
header::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 30px;
    width: 60px;
    height: 40px;
    background: linear-gradient(to bottom, #DA251D 0%, #DA251D 100%);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    animation: coVietNamWave 3s ease-in-out infinite;
    z-index: 2;
}

header::after {
    content: '⭐';
    position: absolute;
    top: 30px;
    left: 45px;
    color: #FFDE00;
    font-size: 25px;
    animation: coVietNamWave 3s ease-in-out infinite;
    z-index: 3;
}

/* Trống đồng decoration */
.trong-dong-left,
.trong-dong-right {
    position: absolute;
    width: 120px;
    height: 120px;
    top: 50%;
    transform: translateY(-50%);
    opacity: 0.15;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><circle cx="100" cy="100" r="90" fill="none" stroke="%23FFD700" stroke-width="3"/><circle cx="100" cy="100" r="70" fill="none" stroke="%23FFD700" stroke-width="2"/><circle cx="100" cy="100" r="50" fill="none" stroke="%23FFD700" stroke-width="2"/><circle cx="100" cy="100" r="30" fill="none" stroke="%23FFD700" stroke-width="2"/><circle cx="100" cy="100" r="10" fill="%23FFD700"/><path d="M100,10 L110,40 L140,40 L115,60 L125,90 L100,70 L75,90 L85,60 L60,40 L90,40 Z" fill="%23FFD700"/><path d="M100,190 L110,160 L140,160 L115,140 L125,110 L100,130 L75,110 L85,140 L60,160 L90,160 Z" fill="%23FFD700"/><path d="M10,100 L40,90 L40,60 L60,85 L90,75 L70,100 L90,125 L60,115 L40,140 L40,110 Z" fill="%23FFD700"/><path d="M190,100 L160,90 L160,60 L140,85 L110,75 L130,100 L110,125 L140,115 L160,140 L160,110 Z" fill="%23FFD700"/></svg>') center/contain no-repeat;
}

.trong-dong-left {
    left: -60px;
    animation: trongDongBeat 4s ease-in-out infinite;
}

.trong-dong-right {
    right: -60px;
    animation: trongDongBeat 4s ease-in-out infinite 2s;
}

h1 {
    font-family: 'Playfair Display', 'Dancing Script', serif;
    font-size: 4em;
    text-shadow: 
        0 5px 10px rgba(0, 0, 0, 0.5),
        0 10px 20px rgba(0, 0, 0, 0.3),
        0 20px 40px rgba(0, 0, 0, 0.2),
        0 0 60px rgba(255, 215, 0, 0.5);
    position: relative;
    z-index: 2;
    margin-bottom: 20px;
    letter-spacing: 3px;
    font-weight: 700;
    background: linear-gradient(45deg, 
        #FFF 0%, 
        #FFD700 25%, 
        #FFF 50%, 
        #FFD700 75%, 
        #FFF 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 100%;
    animation: shimmer 3s linear infinite;
}

/* Slogan với font thư pháp */
header p {
    font-family: 'Dancing Script', cursive;
    font-size: 1.8em;
    opacity: 0.95;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.5);
    position: relative;
    z-index: 1;
    margin-top: 10px;
    letter-spacing: 2px;
}

/* Ngọn lửa thiêng animation */
.sacred-fire {
    position: absolute;
    bottom: -30px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 80px;
    background: radial-gradient(ellipse at bottom, 
        rgba(255, 69, 0, 0.8) 0%, 
        rgba(255, 140, 0, 0.6) 40%, 
        rgba(255, 215, 0, 0.4) 70%, 
        transparent 100%);
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    animation: fireFlicker 1.5s ease-in-out infinite alternate;
}

@keyframes fireFlicker {
    0% { 
        transform: translateX(-50%) scale(1) rotate(-2deg);
        filter: blur(1px);
    }
    50% { 
        transform: translateX(-50%) scale(1.1) rotate(2deg);
        filter: blur(2px);
    }
    100% { 
        transform: translateX(-50%) scale(0.95) rotate(-1deg);
        filter: blur(1.5px);
    }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

h2 {
    color: var(--primary-red);
    font-size: 2.8em;
    margin-bottom: 40px;
    text-align: center;
    position: relative;
    padding: 30px 0;
    font-family: 'Playfair Display', serif;
    font-weight: 700;
}

/* Trang trí cho H2 với họa tiết dân tộc */
h2::before,
h2::after {
    content: '';
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100px;
    height: 50px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 50"><path d="M10,25 Q30,10 50,25 T90,25" stroke="%23FFD700" stroke-width="3" fill="none"/><circle cx="10" cy="25" r="5" fill="%23DC143C"/><circle cx="50" cy="25" r="5" fill="%23DC143C"/><circle cx="90" cy="25" r="5" fill="%23DC143C"/></svg>') center/contain no-repeat;
}

h2::before {
    left: 20px;
}

h2::after {
    right: 20px;
    transform: translateY(-50%) scaleX(-1);
}

/* Modern card sections với viền truyền thống */
section {
    background: white;
    padding: 50px;
    margin-bottom: 50px;
    border-radius: 30px;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.1),
        0 1px 3px rgba(0, 0, 0, 0.05),
        inset 0 0 0 3px var(--secondary-gold),
        inset 0 0 0 6px var(--primary-red);
    position: relative;
    overflow: hidden;
    animation: fadeInUp 1s ease-out;
    animation-fill-mode: both;
}

/* Góc trang trí cho sections */
section::before,
section::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 60px;
    background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 60 60"><path d="M5,5 L5,25 Q5,30 10,30 L30,30 Q30,25 30,5 Q25,5 5,5" fill="%23DC143C" opacity="0.3"/><path d="M0,0 L0,20 Q0,25 5,25 L25,25 Q25,20 25,0 Q20,0 0,0" fill="%23FFD700" opacity="0.5"/></svg>') center/contain no-repeat;
}

section::before {
    top: -5px;
    left: -5px;
}

section::after {
    bottom: -5px;
    right: -5px;
    transform: rotate(180deg);
}

section:nth-child(2) { animation-delay: 0.2s; }
section:nth-child(3) { animation-delay: 0.4s; }
section:nth-child(4) { animation-delay: 0.6s; }
section:nth-child(5) { animation-delay: 0.8s; }

/* Calendar Section với style Việt Nam */
.calendar-controls {
    text-align: center;
    margin-bottom: 40px;
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.calendar-controls select {
    padding: 15px 40px;
    border: 3px solid var(--primary-red);
    border-radius: 50px;
    background: linear-gradient(145deg, white, var(--light-beige));
    color: var(--text-dark);
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 
        0 5px 20px rgba(220, 20, 60, 0.2),
        inset 0 -2px 5px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.calendar-controls select::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 215, 0, 0.3), transparent);
    transition: left 0.5s;
}

.calendar-controls select:hover {
    transform: translateY(-3px);
    box-shadow: 
        0 8px 25px rgba(220, 20, 60, 0.3),
        inset 0 -2px 5px rgba(0, 0, 0, 0.1);
    border-color: var(--secondary-gold);
}

.calendar-controls select:hover::before {
    left: 100%;
}

.calendar-container {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 10px;
    max-width: 900px;
    margin: 0 auto;
    padding: 30px;
    background: 
        linear-gradient(145deg, #f9f9f9, #fff),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="%23B87333" stroke-width="0.5" opacity="0.1"/></svg>') center/200px 200px;
    border-radius: 20px;
    box-shadow: 
        inset 0 2px 10px rgba(0, 0, 0, 0.05),
        0 10px 30px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--secondary-gold);
}

.calendar-header {
    background: linear-gradient(135deg, var(--dark-brown), var(--bronze-drum));
    color: white;
    padding: 20px;
    text-align: center;
    font-weight: bold;
    border-radius: 15px;
    box-shadow: 
        0 5px 15px rgba(0, 0, 0, 0.2),
        inset 0 -2px 5px rgba(0, 0, 0, 0.2);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 1.1em;
    position: relative;
    overflow: hidden;
}

.calendar-header::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 215, 0, 0.2) 50%, transparent 70%);
    animation: shimmer 3s infinite;
}

.calendar-day {
    border: 2px solid #e0e0e0;
    padding: 15px 10px;
    min-height: 100px;
    background: linear-gradient(145deg, #ffffff, #f5f5f5);
    position: relative;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 15px;
    overflow: hidden;
}

.calendar-day::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, var(--secondary-gold) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s;
    z-index: 0;
}

.calendar-day:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 
        0 15px 35px rgba(0, 0, 0, 0.15),
        0 5px 15px rgba(255, 215, 0, 0.3);
    border-color: var(--secondary-gold);
    z-index: 10;
}

.calendar-day:hover::before {
    opacity: 0.15;
}

.calendar-day.holiday {
    background: 
        linear-gradient(135deg, #FFE4E1, #FFB6C1, #FFC0CB),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 50 50"><circle cx="25" cy="25" r="20" fill="none" stroke="%23DC143C" stroke-width="0.5" opacity="0.2"/></svg>') center/50px 50px;
    border: 3px solid var(--primary-red);
    box-shadow: 
        0 8px 20px rgba(220, 20, 60, 0.25),
        inset 0 2px 5px rgba(255, 255, 255, 0.5);
}

.calendar-day.highlight {
    background: 
        linear-gradient(135deg, #FFFACD, #FFD700, #FFA500),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 40 40"><path d="M20,5 L25,15 L35,15 L27,22 L32,32 L20,25 L8,32 L13,22 L5,15 L15,15 Z" fill="%23FFD700" opacity="0.2"/></svg>') center/40px 40px;
    border: 3px solid var(--secondary-gold);
    font-weight: bold;
    box-shadow: 
        0 8px 20px rgba(255, 215, 0, 0.3),
        inset 0 2px 5px rgba(255, 255, 255, 0.5);
    animation: pulse 2s infinite;
}

.solar-date {
    font-size: 1.5em;
    font-weight: bold;
    color: var(--text-dark);
    position: relative;
    z-index: 1;
    font-family: 'Playfair Display', serif;
}

.lunar-date {
    font-size: 0.9em;
    color: var(--bronze-drum);
    margin-top: 10px;
    font-style: italic;
    position: relative;
    z-index: 1;
    font-family: 'Dancing Script', cursive;
}

/* Countdown Section với thiết kế ngọn lửa */
.countdown-display {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    perspective: 1000px;
    margin-top: 30px;
}

.countdown-item {
    text-align: center;
    background: 
        linear-gradient(145deg, var(--primary-red), var(--dark-brown)),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="%23FFD700" stroke-width="1" opacity="0.2"/></svg>') center/100px 100px;
    color: white;
    padding: 40px 30px;
    border-radius: 30px;
    min-width: 140px;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.3),
        inset 0 2px 10px rgba(255, 255, 255, 0.2),
        inset 0 -5px 10px rgba(0, 0, 0, 0.3),
        0 0 50px rgba(255, 69, 0, 0.3);
    transform: rotateX(10deg);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 3px solid var(--secondary-gold);
}

.countdown-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(circle at center, rgba(255, 215, 0, 0.3) 0%, transparent 50%),
        linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    animation: rotateGlow 10s linear infinite;
}

@keyframes rotateGlow {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.countdown-item:hover {
    transform: rotateX(0deg) translateY(-10px) scale(1.05);
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.4),
        inset 0 2px 10px rgba(255, 255, 255, 0.3),
        0 0 80px rgba(255, 69, 0, 0.5);
}

.countdown-number {
    display: block;
    font-size: 4em;
    font-weight: bold;
    text-shadow: 
        0 5px 10px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(255, 215, 0, 0.5);
    font-family: 'Playfair Display', serif;
    background: linear-gradient(180deg, #FFF, #FFD700, #FFF);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    z-index: 1;
}

.countdown-label {
    display: block;
    font-size: 1.2em;
    margin-top: 15px;
    text-transform: uppercase;
    letter-spacing: 3px;
    opacity: 0.95;
    font-weight: 600;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

/* Quotes Section với khung truyền thống */
.quotes-container {
    background: 
        linear-gradient(135deg, rgba(255, 215, 0, 0.1), rgba(220, 20, 60, 0.1)),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 100"><path d="M20,50 Q50,20 80,50 T140,50 T200,50" stroke="%23B87333" stroke-width="1" fill="none" opacity="0.2"/><text x="100" y="50" font-size="60" fill="%23FFD700" opacity="0.05" text-anchor="middle" dominant-baseline="middle" font-family="serif">"</text></svg>') center/contain no-repeat;
    padding: 60px 50px;
    border-radius: 30px;
    text-align: center;
    cursor: pointer;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 250px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    box-shadow: 
        0 15px 35px rgba(0, 0, 0, 0.1),
        inset 0 2px 5px rgba(255, 255, 255, 0.5),
        inset 0 0 0 2px var(--bronze-drum);
    overflow: hidden;
}

/* Khung trang trí 4 góc */
.quotes-container::before,
.quotes-container::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 80px;
    border: 3px solid var(--secondary-gold);
    pointer-events: none;
}

.quotes-container::before {
    top: 10px;
    left: 10px;
    border-right: none;
    border-bottom: none;
    border-radius: 10px 0 0 0;
}

.quotes-container::after {
    bottom: 10px;
    right: 10px;
    border-left: none;
    border-top: none;
    border-radius: 0 0 10px 0;
}

.quotes-container:hover {
    transform: scale(1.02);
    box-shadow: 
        0 25px 50px rgba(0, 0, 0, 0.15),
        inset 0 2px 10px rgba(255, 255, 255, 0.7),
        0 0 50px rgba(255, 215, 0, 0.2);
}

blockquote {
    font-size: 1.8em;
    font-style: italic;
    color: var(--text-dark);
    margin-bottom: 30px;
    line-height: 1.8;
    position: relative;
    z-index: 1;
    font-weight: 400;
    font-family: 'Playfair Display', serif;
    padding: 0 40px;
}

blockquote::before,
blockquote::after {
    font-size: 4em;
    color: var(--primary-red);
    opacity: 0.3;
    position: absolute;
    font-family: Georgia, serif;
}

blockquote::before {
    content: '"';
    top: -30px;
    left: -20px;
}

blockquote::after {
    content: '"';
    bottom: -60px;
    right: -20px;
}

cite {
    font-size: 1.2em;
    color: var(--dark-brown);
    font-weight: bold;
    display: block;
    margin-top: 20px;
    position: relative;
    z-index: 1;
    font-family: 'Dancing Script', cursive;
    font-size: 1.4em;
}

cite::before {
    content: '— ';
}

/* Products Section với card design Việt Nam */
.products-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    padding: 30px 0;
}

.product-item {
    background: white;
    border: 3px solid transparent;
    border-radius: 30px 30px 100px 30px;
    padding: 0;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    overflow: hidden;
    position: relative;
    box-shadow: 
        0 10px 30px rgba(0, 0, 0, 0.1),
        inset 0 0 0 2px var(--light-beige);
    background: linear-gradient(145deg, white, #FFF8F0);
}

.product-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at top right, var(--secondary-gold) 0%, transparent 50%),
        radial-gradient(circle at bottom left, var(--primary-red) 0%, transparent 50%);
    opacity: 0;
    transition: opacity 0.4s;
    z-index: 0;
}

.product-item:hover {
    transform: translateY(-15px) scale(1.03);
    box-shadow: 
        0 20px 50px rgba(0, 0, 0, 0.2),
        0 10px 20px rgba(255, 215, 0, 0.3);
    border-color: var(--secondary-gold);
}

.product-item:hover::before {
    opacity: 0.1;
}

.product-image {
    width: 100%;
    height: 220px;
    object-fit: cover;
    transition: transform 0.4s ease;
    border-bottom: 3px solid var(--light-beige);
}

.product-item:hover .product-image {
    transform: scale(1.1);
}

.product-title {
    font-size: 1.4em;
    color: var(--text-dark);
    margin: 25px 20px 20px;
    font-weight: bold;
    position: relative;
    z-index: 1;
    font-family: 'Playfair Display', serif;
}

.product-link {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-red), var(--dark-brown));
    color: white;
    padding: 15px 40px;
    margin: 0 0 30px;
    border-radius: 50px 50px 0 50px;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    z-index: 1;
    box-shadow: 
        0 5px 20px rgba(220, 20, 60, 0.3),
        inset 0 -2px 5px rgba(0, 0, 0, 0.2);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.product-link::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.product-link:hover {
    transform: translateY(-3px);
    box-shadow: 
        0 8px 25px rgba(220, 20, 60, 0.4),
        inset 0 -2px 5px rgba(0, 0, 0, 0.3);
}

.product-link:hover::before {
    width: 300px;
    height: 300px;
}

/* Tours Section với card cao cấp */
.tours-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 45px;
    padding: 30px 0;
}

.tour-item {
    background: white;
    border: none;
    border-radius: 40px;
    padding: 0;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    box-shadow: 
        0 15px 40px rgba(0, 0, 0, 0.1),
        0 2px 5px rgba(0, 0, 0, 0.05),
        inset 0 0 0 3px var(--light-beige);
    transform-style: preserve-3d;
}

.tour-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 8px;
    background: linear-gradient(90deg, 
        var(--primary-red) 0%, 
        var(--secondary-gold) 25%, 
        var(--primary-red) 50%, 
        var(--secondary-gold) 75%, 
        var(--primary-red) 100%);
    background-size: 200% 100%;
    transform: scaleX(0);
    transition: transform 0.4s;
}

.tour-item:hover {
    transform: translateY(-20px) rotateX(5deg);
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.2),
        0 20px 30px rgba(255, 215, 0, 0.2),
        inset 0 0 0 3px var(--secondary-gold);
}

.tour-item:hover::before {
    transform: scaleX(1);
    animation: shimmer 2s linear infinite;
}

.tour-image {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: transform 0.6s ease;
    filter: brightness(0.95);
    position: relative;
}

.tour-item:hover .tour-image {
    transform: scale(1.1);
    filter: brightness(1.05);
}

.tour-content {
    padding: 40px 35px;
    background: linear-gradient(to bottom, white, #FFF8F0);
}

.tour-title {
    font-size: 1.8em;
    color: var(--primary-red);
    margin-bottom: 25px;
    font-weight: bold;
    position: relative;
    padding-bottom: 20px;
    font-family: 'Playfair Display', serif;
}

.tour-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-gold), transparent);
    border-radius: 2px;
}

.tour-info {
    margin-bottom: 15px;
    color: var(--text-dark);
    font-size: 1.1em;
    display: flex;
    align-items: center;
    gap: 10px;
    padding-left: 25px;
    position: relative;
}

.tour-info::before {
    content: '◈';
    position: absolute;
    left: 0;
    color: var(--primary-red);
    font-size: 1.2em;
}

.tour-info strong {
    color: var(--dark-brown);
    margin-right: 5px;
}

.tour-price {
    font-size: 2.2em;
    color: var(--primary-red);
    font-weight: bold;
    margin: 30px 0;
    text-align: center;
    padding: 20px;
    background: 
        linear-gradient(145deg, #FFF5F5, #FFE0E0),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="%23FFD700" stroke-width="0.5" opacity="0.3"/></svg>') center/100px 100px;
    border-radius: 20px;
    box-shadow: 
        inset 0 3px 8px rgba(220, 20, 60, 0.1),
        0 2px 5px rgba(0, 0, 0, 0.05);
    position: relative;
    font-family: 'Playfair Display', serif;
}

.btn-book {
    background: linear-gradient(135deg, var(--primary-red), var(--dark-brown));
    color: white;
    padding: 18px 50px;
    border: none;
    border-radius: 60px;
    cursor: pointer;
    font-size: 1.2em;
    width: 100%;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: bold;
    position: relative;
    overflow: hidden;
    box-shadow: 
        0 8px 25px rgba(220, 20, 60, 0.3),
        inset 0 -3px 8px rgba(0, 0, 0, 0.2);
}

.btn-book::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        transparent, 
        rgba(255, 255, 255, 0.3), 
        transparent);
    transition: left 0.5s;
}

.btn-book:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 12px 35px rgba(220, 20, 60, 0.4),
        inset 0 -3px 8px rgba(0, 0, 0, 0.3);
}

.btn-book:hover::before {
    left: 100%;
}

/* Modal với phong cách Việt Nam */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: 
        linear-gradient(145deg, #ffffff, #FFF8F0),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 200 200"><circle cx="100" cy="100" r="80" fill="none" stroke="%23B87333" stroke-width="1" opacity="0.1"/></svg>') center/300px 300px;
    margin: 3% auto;
    padding: 50px;
    border: none;
    border-radius: 40px;
    width: 90%;
    max-width: 600px;
    position: relative;
    box-shadow: 
        0 30px 80px rgba(0, 0, 0, 0.3),
        inset 0 2px 5px rgba(255, 255, 255, 0.8),
        inset 0 0 0 3px var(--secondary-gold);
    animation: slideDown 0.5s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-80px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-content h3 {
    color: var(--primary-red);
    font-size: 2.2em;
    margin-bottom: 40px;
    text-align: center;
    position: relative;
    padding-bottom: 25px;
    font-family: 'Playfair Display', serif;
}

.modal-content h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    height: 4px;
    background: linear-gradient(90deg, 
        transparent, 
        var(--secondary-gold), 
        var(--bronze-drum), 
        var(--secondary-gold), 
        transparent);
}

.modal-close {
    color: var(--primary-red);
    position: absolute;
    top: 25px;
    right: 35px;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: linear-gradient(145deg, #f0f0f0, white);
    box-shadow: 
        0 3px 10px rgba(0, 0, 0, 0.1),
        inset 0 -2px 5px rgba(0, 0, 0, 0.05);
}

.modal-close:hover {
    color: white;
    background: linear-gradient(145deg, var(--primary-red), var(--dark-brown));
    transform: rotate(90deg);
    box-shadow: 
        0 5px 15px rgba(220, 20, 60, 0.3),
        inset 0 -2px 5px rgba(0, 0, 0, 0.2);
}

.form-group {
    margin-bottom: 30px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 1.1em;
    font-family: 'Playfair Display', serif;
}

.form-group input {
    width: 100%;
    padding: 18px 25px;
    border: 3px solid var(--light-beige);
    border-radius: 20px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: linear-gradient(145deg, white, #FFFAF0);
    font-family: 'Philosopher', serif;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 
        0 0 0 5px rgba(220, 20, 60, 0.1),
        inset 0 2px 5px rgba(0, 0, 0, 0.05);
    transform: translateY(-2px);
}

.required {
    color: var(--primary-red);
}

.btn-submit {
    background: linear-gradient(135deg, var(--primary-red), var(--dark-brown));
    color: white;
    padding: 18px 50px;
    border: none;
    border-radius: 60px;
    cursor: pointer;
    font-size: 1.2em;
    width: 100%;
    transition: all 0.3s ease;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    overflow: hidden;
    box-shadow: 
        0 8px 25px rgba(220, 20, 60, 0.3),
        inset 0 -3px 8px rgba(0, 0, 0, 0.2);
    margin-top: 20px;
}

.btn-submit::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-submit:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 12px 35px rgba(220, 20, 60, 0.4),
        inset 0 -3px 8px rgba(0, 0, 0, 0.3);
}

.btn-submit:hover::after {
    width: 400px;
    height: 400px;
}

/* Popup với hiệu ứng cao cấp */
.popup-overlay {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(15px);
    animation: fadeIn 0.3s ease;
}

.popup-content {
    background: white;
    margin: 3% auto;
    padding: 0;
    border: none;
    border-radius: 40px;
    width: 90%;
    max-width: 800px;
    position: relative;
    box-shadow: 
        0 40px 80px rgba(0, 0, 0, 0.4),
        0 0 120px rgba(255, 215, 0, 0.2),
        inset 0 0 0 5px var(--secondary-gold);
    overflow: hidden;
    animation: bounceIn 0.6s ease;
}

@keyframes bounceIn {
    0% {
        transform: scale(0.3);
        opacity: 0;
    }
    50% {
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.popup-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 10px;
    background: linear-gradient(90deg, 
        var(--primary-red) 0%, 
        var(--secondary-gold) 25%, 
        var(--primary-red) 50%, 
        var(--secondary-gold) 75%, 
        var(--primary-red) 100%);
    background-size: 200% 100%;
    animation: shimmer 3s linear infinite;
}

#popup-body {
    padding: 60px 50px;
    background: 
        linear-gradient(145deg, white, #FFF8F0),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 300 300"><circle cx="150" cy="150" r="120" fill="none" stroke="%23B87333" stroke-width="1" opacity="0.05"/></svg>') center/400px 400px;
}

.popup-close {
    color: white;
    position: absolute;
    top: 25px;
    right: 25px;
    font-size: 45px;
    font-weight: bold;
    cursor: pointer;
    z-index: 10;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-red), var(--dark-brown));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 
        0 5px 20px rgba(0, 0, 0, 0.3),
        inset 0 -2px 5px rgba(0, 0, 0, 0.2);
}

.popup-close:hover {
    transform: rotate(180deg) scale(1.1);
    background: linear-gradient(135deg, var(--dark-brown), var(--primary-red));
    box-shadow: 
        0 8px 25px rgba(0, 0, 0, 0.4),
        inset 0 -2px 5px rgba(0, 0, 0, 0.3);
}

/* Footer với thiết kế truyền thống */
footer {
    text-align: center;
    padding: 60px 50px;
    background: 
        linear-gradient(135deg, var(--dark-brown) 0%, var(--bronze-drum) 50%, var(--dark-brown) 100%),
        url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 400 200"><path d="M0,100 Q100,50 200,100 T400,100" stroke="%23FFD700" stroke-width="2" fill="none" opacity="0.2"/><path d="M0,150 Q100,100 200,150 T400,150" stroke="%23DC143C" stroke-width="1" fill="none" opacity="0.2"/></svg>') center/400px 200px;
    color: white;
    border-radius: 50px 50px 0 0;
    margin-top: 80px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 -20px 40px rgba(0, 0, 0, 0.2);
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 200%;
    height: 100%;
    background: repeating-linear-gradient(
        90deg,
        transparent,
        transparent 200px,
        rgba(255, 215, 0, 0.1) 200px,
        rgba(255, 215, 0, 0.1) 400px
    );
    animation: slide 30s linear infinite;
}

/* Thêm họa tiết rồng 2 bên footer */
footer::after {
    content: '🐲';
    position: absolute;
    bottom: 20px;
    left: 50px;
    font-size: 80px;
    opacity: 0.1;
    transform: scaleX(-1);
}

.footer-links {
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
}

.footer-links a {
    color: var(--secondary-gold);
    text-decoration: none;
    margin: 0 20px;
    font-size: 1.2em;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-links a::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary-gold), white);
    transition: width 0.3s ease;
}

.footer-links a:hover {
    color: white;
    transform: translateY(-3px);
    text-shadow: 0 5px 10px rgba(0, 0, 0, 0.3);
}

.footer-links a:hover::after {
    width: 100%;
}

footer p {
    position: relative;
    z-index: 1;
    margin-top: 30px;
    opacity: 0.9;
    font-size: 1.1em;
    letter-spacing: 1px;
}

/* Decorative Elements */
.lotus-decoration {
    position: fixed;
    pointer-events: none;
    z-index: -1;
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2.8em;
    }
    
    h2 {
        font-size: 2.2em;
    }
    
    h2::before,
    h2::after {
        display: none;
    }
    
    section {
        padding: 35px 25px;
        margin-bottom: 35px;
    }
    
    .calendar-container {
        gap: 5px;
        padding: 20px 15px;
    }
    
    .calendar-day {
        min-height: 80px;
        padding: 10px 5px;
        font-size: 0.9em;
    }
    
    .countdown-item {
        min-width: 110px;
        padding: 25px 20px;
    }
    
    .countdown-number {
        font-size: 3em;
    }
    
    .tours-container {
        grid-template-columns: 1fr;
    }
    
    .products-container {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: 25px;
    }
    
    .modal-content {
        margin: 10% auto;
        padding: 40px 30px;
    }
    
    .trong-dong-left,
    .trong-dong-right,
    .lotus-decoration {
        display: none;
    }
    
    header {
        padding: 50px 30px;
    }
    
    blockquote {
        font-size: 1.4em;
        padding: 0 20px;
    }
}

/* Print styles */
@media print {
    body {
        background: white;
    }
    
    section {
        break-inside: avoid;
        box-shadow: none;
        border: 2px solid #ddd;
    }
    
    .no-print {
        display: none;
    }
}

/* Loading animation */
@keyframes loading {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading {
    display: inline-block;
    width: 50px;
    height: 50px;
    border: 5px solid rgba(220, 20, 60, 0.1);
    border-top-color: var(--primary-red);
    border-radius: 50%;
    animation: loading 1s linear infinite;
}

/* Pulse animation */
@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 8px 20px rgba(255, 215, 0, 0.3); }
    50% { transform: scale(1.05); box-shadow: 0 12px 30px rgba(255, 215, 0, 0.5); }
    100% { transform: scale(1); box-shadow: 0 8px 20px rgba(255, 215, 0, 0.3); }
}

/* Fade animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}