:root {
    --primary: #00c6ff;
    --secondary: #0072ff;
    --bg-glass: rgba(255, 255, 255, 0.05);
    --border-glass: rgba(255, 255, 255, 0.1);
    --text-main: #ffffff;
    --text-muted: rgba(255, 255, 255, 0.7);
}

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

body {
    font-family: 'Be Vietnam Pro', sans-serif;
    overflow-x: hidden;
    color: var(--text-main);
    background-color: #050505;
}

/* ===== UTILITIES ===== */
.container {
    max-width: 1200px;
    margin: auto;
    padding: 80px 20px;
}

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

.narrow {
    max-width: 800px;
    text-align: center;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.glass {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

/* ===== VIDEO BACKGROUND ===== */
.video-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    z-index: -2;
}

.bg-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.overlay-dark {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.6), #050505);
}

/* ===== HERO ===== */
.about-hero {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 20px;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 50px;
    border: 1px solid rgba(255,255,255,0.3);
    margin-bottom: 20px;
    font-size: 0.9rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.about-hero h1 {
    font-size: clamp(3rem, 6vw, 5rem);
    margin-bottom: 15px;
    font-weight: 700;
}

.about-hero .subtitle {
    font-size: clamp(1rem, 2vw, 1.3rem);
    color: var(--text-muted);
}

/* ===== STORY ===== */
.cinematic-icon {
    font-size: 60px;
    color: var(--primary);
    margin-bottom: 20px;
}

.about-section h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    margin-bottom: 30px;
}

.big-text {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 500;
    margin-bottom: 25px;
    line-height: 1.4;
}

.desc-text {
    font-size: 1.1rem;
    color: var(--text-muted);
    line-height: 1.8;
}

/* ===== PHOTOGRAPHER ===== */
.flex-layout {
    display: flex;
    align-items: center;
    gap: 60px;
}

.about-img {
    flex: 1;
    position: relative;
}

    .about-img img {
        width: 100%;
        max-width: 450px;
        border-radius: 20px;
        display: block;
        box-shadow: 0 20px 50px rgba(0,0,0,0.5);
        position: relative;
        z-index: 2;
    }

.img-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    height: 80%;
    background: var(--primary);
    filter: blur(80px);
    opacity: 0.3;
    z-index: 1;
}

.about-text {
    flex: 1;
}

    .about-text p {
        font-size: 1.1rem;
        color: var(--text-muted);
        line-height: 1.8;
        margin-bottom: 20px;
    }

.signature {
    margin-top: 30px;
    font-family: 'Brush Script MT', cursive;
    font-size: 2rem;
    color: white;
}

/* ===== USP ===== */
.usp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.usp-card {
    padding: 40px 30px;
}

    .usp-card i {
        font-size: 50px;
        color: var(--primary);
        margin-bottom: 20px;
    }

    .usp-card h3 {
        font-size: 1.4rem;
        margin-bottom: 15px;
    }

    .usp-card p {
        color: var(--text-muted);
        line-height: 1.6;
    }

/* ===== TIMELINE ===== */
.timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.timeline-item {
    padding: 30px 20px;
    position: relative;
    overflow: hidden;
}

.step-num {
    font-size: 4rem;
    font-weight: 700;
    color: rgba(255,255,255,0.05);
    position: absolute;
    top: -10px;
    right: 10px;
}

.timeline-item h3 {
    position: relative;
    font-size: 1.2rem;
    z-index: 2;
    margin-top: 20px;
}

/* ===== STATS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    text-align: center;
}

.stat-card {
    padding: 40px 20px;
}

    .stat-card h2 {
        font-size: 3.5rem;
        margin-bottom: 5px;
    }

/* ===== CTA ===== */
.about-cta {
    padding: 100px 20px;
}

.cta-box {
    max-width: 800px;
    margin: auto;
    padding: 60px 40px;
    text-align: center;
}

    .cta-box p {
        color: var(--text-muted);
        margin-bottom: 30px;
        font-size: 1.1rem;
    }

/* Dùng lại nút IOS của trang chủ */
.ios-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 12px;
    font-weight: 600;
    text-decoration: none;
    color: white;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    transition: 0.3s;
}

    .ios-btn:hover {
        transform: translateY(-3px);
        box-shadow: 0 10px 25px rgba(0, 198, 255, 0.4);
    }

/* ===== ANIMATIONS ===== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.5, 0, 0, 1);
}

    .reveal.active {
        opacity: 1;
        transform: translateY(0);
    }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .flex-layout {
        flex-direction: column;
        text-align: center;
    }

    .about-img img {
        margin: 0 auto;
    }
}

/* ========================================================
   CSS CONTACT FORM BẠN ĐỂ BÊN DƯỚI - TÔI ĐÃ TỐI ƯU LẠI
   (NẾU BẠN DÙNG CHUNG FILE THÌ CỨ ĐỂ ĐOẠN NÀY VÀO)
======================================================== */
.contact-container {
    padding: 100px 20px;
    max-width: 1200px;
    margin: auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 12px;
    border: 1px solid var(--border-glass);
    background: rgba(255,255,255,0.05);
    color: white;
    transition: 0.3s;
}

    .contact-form input:focus, .contact-form textarea:focus {
        background: rgba(255,255,255,0.1);
        border-color: var(--primary);
        outline: none;
    }

.btn-send {
    width: 100%;
    padding: 15px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    font-weight: bold;
}