/* --- FONT CHỮ --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700;900&family=Oswald:wght@500;700&display=swap');

/* --- CSS RESET (Thay thế Tailwind Preflight) --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: #000;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    color: #fff;
    padding-top: 45px;
}

/* --- HEADER NAVIGATION --- */
.sp-sticky-header {
    position: fixed; top: 0; left: 0; width: 100%; height: 45px;
    background-color: #000; display: flex; align-items: center; justify-content: space-between;
    z-index: 99999; box-shadow: 0 2px 5px rgba(0,0,0,0.8); border-bottom: 1px solid #333;
}
.left-group, .right-group { display: flex; align-items: center; height: 100%; }

.sp-back-to-k14 {
    display: flex; align-items: center; justify-content: center; width: 45px; height: 45px;
    background-color: #007f74; /* Xanh Soha Truyền thống */
    color: white; text-decoration: none; font-size: 18px;
    transition: background 0.3s; cursor: pointer;
}
.sp-back-to-k14:hover { background-color: #00665d; }

.sp-mag-logo { margin-left: 15px; } 
.sp-mag-logo img { 
    height: 24px; width: auto;
    /* Filter chuyển ảnh trắng sang màu Xanh Soha (#007f74) */
    filter: brightness(0) saturate(100%) invert(32%) sepia(99%) saturate(1430%) hue-rotate(152deg) brightness(92%) contrast(101%);
}

.center-logo img { height: 26px; width: auto; } .right-group { padding-right: 15px; }
.fb-custom-btn {
    display: flex; align-items: center; gap: 6px; color: #ccc;
    text-decoration: none; font-size: 13px; font-weight: bold; transition: color 0.2s;
}
.fb-custom-btn:hover { color: #fff; }
@media (max-width: 600px) { .center-logo { display: none; } }

/* --- SCROLLYTELLING CONTAINER --- */
.scrolly-container {
    display: flex; flex-direction: column; width: 100%;
    margin: 0; padding: 0; background-color: #000;
}

/* --- SETUP STEP (Tối ưu hiển thị ảnh Desktop) --- */
.step {
    height: 100vh; width: 100%;
    position: relative;
    display: flex; align-items: flex-end; justify-content: center;
    overflow: hidden;
    margin: 0; padding: 0; border: none; outline: none;
    margin-top: -1px; /* Seamless hack */
    box-shadow: 0 -2px 0 0 #000; z-index: 1;
    
    background-size: cover; 
    background-position: center center;
    background-attachment: fixed;
    background-repeat: no-repeat;
    image-rendering: -webkit-optimize-contrast;
    transition: background-image 1s ease-in-out;
}

/* GRADIENT OVERLAYS */
.step::after {
    content: ''; position: absolute; bottom: 0; left: 0;
    width: 100%; height: 50%;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.4) 50%, transparent 100%);
    z-index: 1; pointer-events: none;
}
.step::before {
    content: ''; position: absolute; top: 0; left: 0;
    width: 100%; height: 15%;
    background: linear-gradient(to bottom, rgba(0,0,0,0.4) 0%, transparent 100%);
    z-index: 1; pointer-events: none;
}

/* --- TEXT STYLE --- */
.step-content {
    position: relative; z-index: 10;
    max-width: 900px; padding: 2rem 2rem 5rem 2rem;
    text-align: left;
    opacity: 0; transform: translateY(50px); filter: blur(5px);
    transition: all 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.step.active .step-content { opacity: 1; transform: translateY(0); filter: blur(0); }

.step h2 {
    font-family: 'Inter', sans-serif;
    font-size: 3rem; font-weight: 900; line-height: 1.2; margin-bottom: 1.5rem;
    color: #fff; text-transform: uppercase;
    text-shadow: 0 5px 15px rgba(0,0,0,0.8); letter-spacing: -1px;
}

.step p {
    font-size: 1.2rem; line-height: 1.6; color: rgba(255,255,255,0.95); margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.8);
}

.step p strong {
    display: block; font-size: 1.5rem; font-weight: 800;
    color: #fff; margin-bottom: 0.5rem;
    text-shadow: 0 2px 8px rgba(0,0,0,0.9); text-transform: uppercase;
}

.text-highlight { background: transparent; text-shadow: 0 2px 5px rgba(0,0,0,1); }

/* --- INFOGRAPHIC SECTION --- */
.info-section {
    background: radial-gradient(circle at center, #1a202c 0%, #000000 100%);
    padding: 80px 20px; border-top: 1px solid #333; font-family: 'Inter', sans-serif;
}
.info-container { max-width: 1100px; margin: 0 auto; }

.info-title {
    text-align: center; color: #fff;
    font-family: 'Oswald', sans-serif; font-size: 2.5rem; font-weight: 700;
    margin-bottom: 60px; text-transform: uppercase; line-height: 1.3;
    text-shadow: 0 0 20px rgba(251, 191, 36, 0.3);
    background: linear-gradient(to right, #fff, #fbbf24, #fff);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
}

.info-grid { display: grid; grid-template-columns: 1fr; gap: 30px; }

.chart-box, .strategy-box, .market-box {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px; padding: 30px;
    backdrop-filter: blur(10px);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}
.chart-box:hover, .strategy-box:hover, .market-box:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 86, 179, 0.25);
    border-color: rgba(0, 86, 179, 0.6);
}

/* ICON SIÊU THỰC CHO XE */
.vehicle-icon {
    font-size: 2rem; margin-right: 15px; width: 50px; text-align: center;
    background: linear-gradient(to bottom, #fbbf24, #d97706);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 5px rgba(251, 191, 36, 0.5));
    animation: float 3s ease-in-out infinite;
}
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }

.chart-title { color: #fbbf24; font-size: 1.3rem; font-weight: 700; margin-bottom: 30px; text-transform: uppercase; display: flex; align-items: center; gap: 10px; }
.bar-group { margin-bottom: 25px; display: flex; align-items: center; }
.bar-info { flex: 1; }
.bar-label { display: flex; justify-content: space-between; margin-bottom: 8px; font-size: 1rem; color: #e2e8f0; font-weight: 600; }
.bar-value { color: #fbbf24; font-family: 'Oswald', sans-serif; font-size: 1.2rem; }
.bar-bg { background: rgba(255,255,255,0.1); height: 14px; border-radius: 7px; overflow: hidden; }
.bar-fill {
    height: 100%; border-radius: 7px;
    background: linear-gradient(90deg, #0056b3, #00c6ff);
    width: 0; transition: width 1.5s cubic-bezier(0.22, 1, 0.36, 1);
    box-shadow: 0 0 15px rgba(0, 198, 255, 0.6);
}
.active .bar-fill.w-70 { width: 70%; } .active .bar-fill.w-55 { width: 55%; } .active .bar-fill.w-35 { width: 35%; }

.strategy-box { display: flex; flex-direction: column; gap: 25px; }
.strat-item { display: flex; align-items: center; gap: 25px; padding-bottom: 20px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.strat-item:last-child { border-bottom: none; }
.strat-icon-box {
    width: 80px; height: 80px; flex-shrink: 0;
    background: linear-gradient(135deg, #1e293b, #334155);
    border-radius: 16px; display: flex; align-items: center; justify-content: center;
    font-size: 2.5rem; color: #fbbf24;
    box-shadow: 0 0 20px rgba(251, 191, 36, 0.15), inset 0 0 10px rgba(0,0,0,0.5);
    border: 1px solid rgba(251, 191, 36, 0.3);
}
.strat-content h4 { color: #88cbff; font-size: 1rem; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 6px; }
.strat-content p { color: #fff; font-size: 1.2rem; font-weight: 700; line-height: 1.3; }

.market-box { background: linear-gradient(135deg, rgba(0, 86, 179, 0.2) 0%, rgba(0, 30, 60, 0.4) 100%); border: 1px solid rgba(0, 198, 255, 0.3); }
.market-big-num { 
    font-family: 'Oswald', sans-serif; font-size: 5rem; font-weight: 700; line-height: 1; 
    color: #fff; text-shadow: 0 0 40px rgba(251, 191, 36, 0.5); margin-bottom: 5px;
}
.market-label { font-size: 1.1rem; color: #88cbff; text-transform: uppercase; letter-spacing: 1px; }
.project-list { margin-top: 30px; display: flex; flex-direction: column; gap: 18px; }
.project-item { 
    display: flex; align-items: center; gap: 18px; 
    padding: 18px; border-radius: 14px;
    background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.05);
    transition: all 0.3s;
}
.project-item:hover { background: rgba(255,255,255,0.1); border-color: rgba(251, 191, 36, 0.4); transform: scale(1.02); }

.p-icon {
    width: 65px; height: 65px; flex-shrink: 0; border-radius: 50%;
    background: linear-gradient(135deg, #0f172a, #334155);
    border: 2px solid rgba(251, 191, 36, 0.6);
    display: flex; align-items: center; justify-content: center;
    font-size: 2rem; color: #fbbf24;
    box-shadow: 0 0 20px rgba(251, 191, 36, 0.3);
}
.p-content span { font-size: 1.1rem; color: #fff; font-weight: 600; line-height: 1.2; display: block; margin-bottom: 4px; }
.p-value { font-family: 'Oswald', sans-serif; font-size: 1.6rem; font-weight: 700; color: #fbbf24; text-shadow: 0 0 10px rgba(251, 191, 36, 0.6); }

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

/* FOOTER */
.footer-box { background-color: rgba(0, 30, 60, 0.95); padding: 1.5rem 1rem; text-align: center; border-top: 1px solid #333; }
.footer-info { display: flex; justify-content: center; gap: 1.5rem; flex-wrap: wrap; }
.footer-info p { margin: 0; font-size: 0.9rem; color: #aaa; }
.footer-info strong { color: #fff; }

/* MOBILE FIX */
@media (max-width: 768px) {
    .step { background-attachment: scroll; height: 100vh; background-size: cover; background-position: center center; }
    .step-content { padding: 1.5rem; margin-bottom: 8vh; }
    .step h2 { font-size: 2.2rem; }
    .step p strong { font-size: 1.2rem; }
    .info-grid { grid-template-columns: 1fr; }
    .info-title { font-size: 2rem; margin-bottom: 30px; }
    .vehicle-icon { font-size: 1.5rem; width: 40px; margin-right: 10px; }
}

/* CẤU HÌNH ẢNH NỀN */
#step-1 { background-image: url('https://sohanews.sohacdn.com/160588918557773824/2026/1/19/duong-sat-toc-do-cao-7-17687907890701859514667.png'); align-items: center; } 
#step-1 .step-content { text-align: center; }
#step-2 { background-image: url('https://sohanews.sohacdn.com/160588918557773824/2026/1/19/duong-sat-toc-do-cao-10-17687907891941975434928.png'); } 
#step-3 { background-image: url('https://sohanews.sohacdn.com/160588918557773824/2026/1/19/duong-sat-toc-do-cao-4-17687907891831918163993.png'); } 
#step-4 { background-image: url('https://sohanews.sohacdn.com/160588918557773824/2026/1/19/duong-sat-toc-do-cao-8-1768790789154249537051.png'); } 
#step-5 { background-image: url('https://sohanews.sohacdn.com/160588918557773824/2026/1/19/generated17687927910-1768793073727739323665.png'); } 
#step-6 { background-image: url('https://sohanews.sohacdn.com/160588918557773824/2026/1/19/duong-sat-toc-do-cao-6-17687907891011022072246.png'); } 
#step-7 { background-image: url('https://sohanews.sohacdn.com/160588918557773824/2026/1/19/duong-sat-toc-do-cao-2-17687907891181243738244.png'); } 
#step-8 { background-image: url('https://sohanews.sohacdn.com/160588918557773824/2026/1/19/duong-sat-toc-do-cao-3-17687907891451297642571.png'); }