/* ============================================
   RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Main Colors - Fresh & Natural */
    --tea-green: #6B8E5A;        /* Fresh tea green 🍃 */
    --soft-cream: #F5F1E8;        /* Soft cream ☁️ */
    --gold: #D4AF37;              /* Gold ✨ */
    --natural-brown: #8B6F47;     /* Natural brown 🌾 */
    
    /* Additional Colors */
    --ivory: #F5F1E8;
    --white: #ffffff;
    --dark-brown: #5C4A37;
    --light-green: #A8C99F;
    --warm-gold: #E8C469;
    
    /* Shadows */
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--soft-cream);
    color: var(--natural-brown);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

a {
    color: var(--tea-green);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--copper-gold);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.navbar {
    padding: 1rem 0;
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo {
    font-family: 'Lobster', cursive;
    font-size: 1.875rem;
    color: var(--gold);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.logo:hover {
    color: var(--tea-green);
    transform: scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--earth-brown);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--gold);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gold);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--earth-brown);
    transition: all 0.3s ease;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--tea-green) 0%, var(--gold) 50%, var(--tea-green) 100%);
    opacity: 0.9;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background-image: url('data:image/svg+xml,%3Csvg width="100" height="100" xmlns="http://www.w3.org/2000/svg"%3E%3Cdefs%3E%3Cpattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"%3E%3Cpath d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/%3E%3C/pattern%3E%3C/defs%3E%3Crect width="100" height="100" fill="url(%23grid)"/%3E%3C/svg%3E');
    opacity: 0.3;
}

.tea-leaves-container {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: var(--white);
}

.hero-title {
    font-family: 'Lobster', cursive;
    font-size: 4rem;
    color: var(--white);
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    animation: fadeIn 1s ease-in;
}

.hero-subtitle {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 2rem;
    font-style: italic;
    animation: fadeIn 1s ease-in 0.3s both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeIn 1s ease-in 0.6s both;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--white);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: 9999px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--white);
    color: var(--tea-green);
}

.btn-primary:hover {
    background: var(--gold);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--tea-green);
    transform: translateY(-2px);
}

.btn-white {
    background: var(--white);
    color: var(--tea-green);
}

.btn-white:hover {
    background: var(--ivory);
    color: var(--tea-green);
    transform: translateY(-2px);
}

/* ============================================
   SECTIONS
   ============================================ */
section {
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    color: var(--natural-brown);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: rgba(139, 111, 71, 0.7);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features-section {
    background: var(--soft-cream);
    padding: 5rem 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-title {
    font-size: 1.25rem;
    color: var(--natural-brown);
    margin-bottom: 0.5rem;
}

.feature-description {
    color: rgba(139, 111, 71, 0.7);
    font-size: 0.95rem;
}

/* ============================================
   QUOTE SECTION
   ============================================ */
.quote-section {
    background: linear-gradient(135deg, var(--tea-green) 0%, var(--gold) 100%);
    color: var(--white);
    padding: 5rem 0;
    text-align: center;
}

.quote-text {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    font-style: italic;
    max-width: 800px;
    margin: 0 auto 1.5rem;
    line-height: 1.6;
}

.quote-author {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ============================================
   PRODUCTS PREVIEW
   ============================================ */
.products-preview-section {
    background: var(--soft-cream);
    padding: 5rem 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.product-card {
    background: var(--white);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    height: 250px;
    background: linear-gradient(135deg, var(--tea-green) 0%, var(--gold) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.5s ease;
}

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

.product-emoji {
    font-size: 5rem;
}

.product-info {
    padding: 1.5rem;
}

.product-name {
    font-size: 1.5rem;
    color: var(--natural-brown);
    margin-bottom: 0.5rem;
}

.product-description {
    color: rgba(139, 111, 71, 0.7);
}

.section-cta {
    text-align: center;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
    background: linear-gradient(135deg, var(--tea-green) 0%, var(--gold) 50%, var(--tea-green) 100%);
    color: var(--white);
    padding: 5rem 0;
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

/* ============================================
   FOOTER
   ============================================ */
footer {
    background: var(--natural-brown);
    color: var(--soft-cream);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    color: var(--gold);
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(245, 241, 232, 0.8);
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--gold);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(245, 241, 232, 0.2);
    color: rgba(245, 241, 232, 0.6);
    font-size: 0.875rem;
}

/* ============================================
/* Legacy support for old social-icons class */
.social-icons {
    position: fixed;
    right: 2rem;
    bottom: 2rem;
    z-index: 50;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.social-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-decoration: none;
    background: var(--tea-green);
}

.social-icon:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

/* Responsive for social icons */
@media (max-width: 1024px) {
    .homepage-social-icons,
    .social-icons {
        right: 1rem !important;
        bottom: 1.5rem !important;
        display: flex !important;
    }
    
    .homepage-social-icon,
    .social-icon {
        width: 45px;
        height: 45px;
    }
}

@media (max-width: 768px) {
    .homepage-social-icons,
    .social-icons {
        right: 0.75rem !important;
        bottom: 1rem !important;
        gap: 0.75rem;
        display: flex !important;
    }
    
    .homepage-social-icon,
    .social-icon {
        width: 40px;
        height: 40px;
    }
    
    .homepage-social-icon svg,
    .social-icon svg {
        width: 20px;
        height: 20px;
    }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Social Icons Animations */
@keyframes tiktokBounce {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    25% {
        transform: translateY(-8px) scale(1.05);
    }
    50% {
        transform: translateY(0) scale(1);
    }
    75% {
        transform: translateY(-4px) scale(1.02);
    }
}

@keyframes facebookFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    33% {
        transform: translateY(-6px) rotate(2deg);
    }
    66% {
        transform: translateY(-3px) rotate(-2deg);
    }
}

@keyframes zaloWave {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-5px) scale(1.08);
    }
}

@keyframes zaloGlow {
    0%, 100% {
        filter: drop-shadow(0 0 3px rgba(41, 98, 255, 0.5));
    }
    50% {
        filter: drop-shadow(0 0 8px rgba(41, 98, 255, 0.8));
    }
}

@keyframes chatPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 15px rgba(0, 132, 255, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 6px 20px rgba(0, 132, 255, 0.5);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

@keyframes teaLeafFall {
    0% {
        transform: translateY(-100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(100vh) rotate(360deg);
        opacity: 0;
    }
}

.tea-leaf {
    position: absolute;
    font-size: 2rem;
    opacity: 0;
    animation: teaLeafFall 10s linear infinite;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.5rem; }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow-lg);
        transition: left 0.3s ease;
        gap: 1rem;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
    
    .features-grid,
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .social-icons {
        display: none;
    }
    
    section {
        padding: 3rem 0;
    }
    
    .quote-text {
        font-size: 1.5rem;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}