/* ========================================
   Ninh Binh Kites — Stylesheet
   ======================================== */

:root {
    --primary: #e85d26;
    --primary-dark: #c94a1a;
    --primary-light: #ff7a45;
    --dark: #1a1a2e;
    --dark-light: #2d2d44;
    --text: #333;
    --text-light: #666;
    --text-muted: #999;
    --bg: #ffffff;
    --bg-alt: #f8f6f3;
    --bg-card: #ffffff;
    --border: #e8e4df;
    --shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    cursor: url('images/kite-cursor.svg') 16 2, auto;
}

a, button, [role="button"] {
    cursor: url('images/kite-cursor.svg') 16 2, pointer;
}

/* ========================================
   Sound Toggle
   ======================================== */

.sound-toggle {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: var(--dark);
    color: white;
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
}

.sound-toggle:hover {
    background: var(--primary);
    transform: scale(1.1);
}

.sound-toggle.playing {
    background: var(--primary);
    animation: pulse-sound 2s ease-in-out infinite;
}

@keyframes pulse-sound {
    0%, 100% { box-shadow: 0 0 0 0 rgba(232, 93, 38, 0.4); }
    50% { box-shadow: 0 0 0 12px rgba(232, 93, 38, 0); }
}

/* ========================================
   Flying Kite Animation
   ======================================== */

.flying-kite {
    position: absolute;
    z-index: 3;
    pointer-events: none;
    animation: kite-fly 18s ease-in-out infinite;
    filter: drop-shadow(0 4px 12px rgba(0,0,0,0.3));
}

@keyframes kite-fly {
    0% {
        top: 60%;
        left: -10%;
        transform: rotate(-15deg) scale(0.6);
        opacity: 0;
    }
    5% {
        opacity: 1;
    }
    15% {
        top: 25%;
        left: 15%;
        transform: rotate(5deg) scale(0.8);
    }
    30% {
        top: 15%;
        left: 35%;
        transform: rotate(-10deg) scale(1);
    }
    45% {
        top: 30%;
        left: 55%;
        transform: rotate(8deg) scale(0.9);
    }
    60% {
        top: 10%;
        left: 70%;
        transform: rotate(-5deg) scale(1.1);
    }
    75% {
        top: 20%;
        left: 85%;
        transform: rotate(12deg) scale(0.85);
    }
    90% {
        top: 35%;
        left: 100%;
        transform: rotate(-8deg) scale(0.7);
    }
    95% {
        opacity: 1;
    }
    100% {
        top: 50%;
        left: 110%;
        transform: rotate(5deg) scale(0.5);
        opacity: 0;
    }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   Navigation
   ======================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    padding: 10px 0;
}

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

.logo {
    font-size: 1.4rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.navbar.scrolled .logo {
    color: var(--dark);
}

.logo-icon {
    font-size: 1.6rem;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-weight: 400;
    font-size: 0.95rem;
    transition: var(--transition);
}

.navbar.scrolled .nav-links a {
    color: var(--text);
}

.nav-links a:hover {
    color: var(--primary-light);
}

.navbar.scrolled .nav-links a:hover {
    color: var(--primary);
}

.btn-nav {
    background: rgba(255, 255, 255, 0.15) !important;
    padding: 8px 20px !important;
    border-radius: 50px !important;
    border: 1px solid rgba(255, 255, 255, 0.3) !important;
}

.navbar.scrolled .btn-nav {
    background: var(--primary) !important;
    color: white !important;
    border-color: var(--primary) !important;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: white;
    transition: var(--transition);
}

.navbar.scrolled .nav-toggle span {
    background: var(--dark);
}

/* ========================================
   Hero
   ======================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: url('images/ninhbinh.jpg') center/cover no-repeat;
    background-color: #1a3a4a;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(232, 93, 38, 0.1) 0%, transparent 60%),
        radial-gradient(ellipse at 80% 30%, rgba(255, 122, 69, 0.08) 0%, transparent 50%);
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    padding: 120px 24px 80px;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    font-weight: 300;
    max-width: 600px;
    margin: 0 auto 40px;
    opacity: 0.9;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.hero-scroll a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 1.5rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(8px); }
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-family: 'Outfit', sans-serif;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(232, 93, 38, 0.3);
}

.btn-outline {
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: white;
    background: transparent;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

.btn-full {
    width: 100%;
}

/* ========================================
   Sections
   ======================================== */

.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--bg-alt);
}

.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
}

.section-header h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
    letter-spacing: -0.01em;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.7;
}

/* ========================================
   Features
   ======================================== */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 32px;
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ========================================
   Photo Banner
   ======================================== */

.photo-banner {
    overflow: hidden;
}

.photo-banner-inner {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
}

.photo-banner img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

.photo-banner img:hover {
    transform: scale(1.05);
}

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

    .photo-banner img {
        height: 200px;
    }
}

/* ========================================
   Kite Cards
   ======================================== */

.kite-category {
    margin-bottom: 60px;
}

.kite-category:last-child {
    margin-bottom: 0;
}

.category-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 8px;
}

.category-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark);
}

.badge {
    background: #e8f5e9;
    color: #2e7d32;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 500;
}

.badge-advanced {
    background: #fff3e0;
    color: #e65100;
}

.category-desc {
    color: var(--text-light);
    margin-bottom: 24px;
    max-width: 700px;
}

.kites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.kite-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.kite-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.kite-image {
    height: 220px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
}

.kite-img-1 { background-image: url('images/kite1.jpg'); background-color: #74b9ff; }
.kite-img-2 { background-image: url('images/kite2.jpg'); background-color: #55efc4; }
.kite-img-3 { background-image: url('images/kite3.jpg'); background-color: #fd79a8; }
.kite-img-4 { background-image: url('images/kite4.jpg'); background-color: #ffeaa7; }
.kite-img-5 { background-image: url('images/kite5.jpg'); background-color: #6c5ce7; }
.kite-img-6 { background-image: url('images/kite6.jpg'); background-color: #e17055; }

.kite-tag {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--primary);
    color: white;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 1;
}

.kite-info {
    padding: 24px;
}

.kite-info h4 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.kite-info p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 16px;
    line-height: 1.5;
}

.kite-specs {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.kite-specs span {
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--bg-alt);
    padding: 4px 10px;
    border-radius: 50px;
}

.kite-pricing {
    display: flex;
    gap: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.price {
    display: flex;
    flex-direction: column;
}

.price-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.price-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
}

/* ========================================
   Rental
   ======================================== */

.rental-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-bottom: 60px;
}

.rental-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px 32px;
    text-align: center;
    position: relative;
    transition: var(--transition);
}

.rental-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.rental-card-featured {
    border-color: var(--primary);
    box-shadow: 0 4px 30px rgba(232, 93, 38, 0.12);
}

.rental-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: white;
    padding: 4px 20px;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

.rental-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.rental-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.rental-duration {
    color: var(--primary);
    font-weight: 500;
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.rental-card > p {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 16px;
}

.rental-price {
    font-size: 1.1rem;
    color: var(--dark);
}

.rental-price strong {
    font-size: 1.5rem;
    color: var(--primary);
}

.rental-includes {
    background: var(--bg-alt);
    border-radius: var(--radius);
    padding: 40px;
    text-align: center;
}

.rental-includes h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 24px;
}

.includes-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 12px;
    max-width: 700px;
    margin: 0 auto;
    text-align: left;
}

.includes-list li {
    color: var(--text);
    font-size: 0.95rem;
    padding: 4px 0;
}

/* ========================================
   Location
   ======================================== */

.location-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: start;
}

.location-info {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.location-item h3 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 6px;
}

.location-item p {
    color: var(--text-light);
    font-size: 0.95rem;
}

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

.map-container {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

/* ========================================
   Contact
   ======================================== */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px;
    background: var(--bg-alt);
    border-radius: var(--radius);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 2px;
}

.contact-card p {
    font-size: 0.9rem;
    color: var(--text-light);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--text);
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(232, 93, 38, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 30px;
}

.footer-brand {
    font-size: 1.3rem;
    font-weight: 700;
    color: white;
}

.footer-brand p {
    font-size: 0.9rem;
    font-weight: 300;
    margin-top: 6px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-light);
}

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

.footer-bottom p {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: white;
        flex-direction: column;
        padding: 80px 40px 40px;
        gap: 24px;
        box-shadow: var(--shadow-lg);
        transition: var(--transition);
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links a {
        color: var(--text) !important;
        font-size: 1.1rem;
    }

    .btn-nav {
        background: var(--primary) !important;
        color: white !important;
        border-color: var(--primary) !important;
        text-align: center;
    }

    .hero-content {
        padding: 100px 16px 60px;
    }

    .section {
        padding: 60px 0;
    }

    .kites-grid {
        grid-template-columns: 1fr;
    }

    .location-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 24px;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .kite-pricing {
        flex-direction: column;
        gap: 8px;
    }
}