/* ============================================================
   RESET / BASE — cần thiết vì file gốc không có <html>/<body>
   ============================================================ */
* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    width: 100%;
}

body {
    background-color: #0f172a;
    color: #f8fafc;
    font-family: 'Inter', sans-serif;
    -webkit-font-smoothing: antialiased;
}

#interactive-wrapper {
    position: relative;
    width: 100%;
    overflow: hidden;
    background-color: #0f172a;
    color: #f8fafc;
    font-family: 'Inter', sans-serif;

    --primary: #0ea5e9;
    --accent: #f59e0b;
}

/* ============================================================
   LAYOUT SLIDER
   ============================================================ */
#interactive-wrapper .slider-wrapper { position: relative; width: 100%; }
#interactive-wrapper .slider-container { display: block; width: 100%; }

/* Bỏ min-height: 100dvh để thu hẹp khoảng cách, dùng padding tạo không gian vừa phải */
#interactive-wrapper .slide {
    width: 100%;
    min-height: auto;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 6rem 5%;
    box-sizing: border-box;
    overflow: hidden;
}

/* Giữ trang bìa đầu tiên dài hơn một chút */
#interactive-wrapper .slide.cover-slide { min-height: 85dvh; }

/* Dòng ngắt trang gradient giữa các slide (trừ slide cuối) */
#interactive-wrapper .slide:not(:last-child)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(14, 165, 233, 0.4), rgba(245, 158, 11, 0.4), rgba(14, 165, 233, 0.4), transparent);
    z-index: 10;
}

#interactive-wrapper .slide-bg {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-size: cover;
    background-position: center;
    z-index: 0;
    transform: scale(1.05);
    transition: transform 10s ease-out;
}
#interactive-wrapper .slide.active .slide-bg {
    transform: scale(1);
    animation: slowZoom 20s infinite alternate ease-in-out;
}

#interactive-wrapper .slide::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(15,23,42,0.95) 0%, rgba(15,23,42,0.8) 100%);
    z-index: 1;
}
#interactive-wrapper .slide.cover-slide::before {
    background: linear-gradient(135deg, rgba(15,23,42,0.6) 0%, rgba(0,0,0,0.7) 100%);
}

#interactive-wrapper .slide-content {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
}

/* ============================================================
   ANIMATION
   ============================================================ */
#interactive-wrapper .anim-element {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}
#interactive-wrapper .slide.active .anim-element { opacity: 1; transform: translateY(0); }

#interactive-wrapper .delay-100 { transition-delay: 0.1s; }
#interactive-wrapper .delay-200 { transition-delay: 0.2s; }
#interactive-wrapper .delay-300 { transition-delay: 0.3s; }
#interactive-wrapper .delay-400 { transition-delay: 0.4s; }
#interactive-wrapper .delay-500 { transition-delay: 0.5s; }
#interactive-wrapper .delay-600 { transition-delay: 0.6s; }

@keyframes slowZoom {
    0%   { transform: scale(1); }
    100% { transform: scale(1.1); }
}
@keyframes pulseGlow {
    0%   { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.4); }
    70%  { box-shadow: 0 0 0 15px rgba(245, 158, 11, 0); }
    100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
}
#interactive-wrapper .btn-pulse { animation: pulseGlow 2s infinite; }

/* ============================================================
   COMPONENTS
   ============================================================ */
/* absolute thay vì fixed để thanh progress bám đúng vào iframe */
#interactive-wrapper .progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--accent);
    width: 0%;
    z-index: 9999;
    transition: width 0.1s ease;
}

#interactive-wrapper .data-number {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1;
    background: -webkit-linear-gradient(0deg, var(--accent), #fcd34d);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}
#interactive-wrapper .data-number.cyan {
    background: -webkit-linear-gradient(0deg, var(--primary), #67e8f9);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

#interactive-wrapper .modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    backdrop-filter: blur(8px);
}
#interactive-wrapper .modal.active { opacity: 1; pointer-events: auto; }

#interactive-wrapper .modal-content {
    background: #1e293b;
    width: 90%;
    max-width: 700px;
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid #334155;
    position: relative;
    transform: translateY(20px);
    transition: transform 0.3s ease;
    max-height: 90vh;
    overflow-y: auto;
}
#interactive-wrapper .modal.active .modal-content { transform: translateY(0); }

#interactive-wrapper .close-modal {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.5rem;
    color: #94a3b8;
    cursor: pointer;
    transition: color 0.2s;
}
#interactive-wrapper .close-modal:hover { color: white; }

#interactive-wrapper .chart-container {
    position: relative;
    height: 400px;
    width: 100%;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 768px) {
    #interactive-wrapper .chart-container { height: 250px; }
    #interactive-wrapper .data-number { font-size: 2.5rem; }
    #interactive-wrapper .slide { padding: 4rem 1rem; }
    #interactive-wrapper .modal-content { padding: 1.5rem; }
}
