:root {
    --primary-vibrant: #4361ee;
    --secondary-vibrant: #f72585;
    --accent-vibrant: #4cc9f0;
    --navy-deep: #0b1e3b;
    --bg-main: #f8fbff;
}

/* Base */
body {
    font-family: 'Inter', system-ui, sans-serif;
    background-color: var(--bg-main);
    color: #0f172a;
}

/* Background mesh */
.mesh-gradient-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background-color: var(--bg-main);
    background-image: radial-gradient(at 10% 10%, rgba(67,97,238,0.1), transparent 50%), radial-gradient(at 80% 80%, rgba(247,37,133,0.05), transparent 50%), radial-gradient(at 40% 60%, rgba(76,201,240,0.08), transparent 50%);
}

/* HERO */
.hero-vibrant {
    position: relative;
    padding: 130px 0;
    background-color: #f8fbff;
    overflow: hidden;
    border-radius: 0 0 60px 60px;
}

    .hero-vibrant::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background-image: radial-gradient(at 10% 10%, rgba(76,201,240,0.4), transparent 40%), radial-gradient(at 90% 10%, rgba(67,97,238,0.3), transparent 40%), radial-gradient(at 50% 90%, rgba(247,37,133,0.2), transparent 50%);
        filter: blur(80px);
        opacity: 0.8;
    }

.text-vibrant-dark {
    color: #1e293b;
}

.text-sub-light {
    color: #475569;
}

.glass-badge-vibrant {
    background: rgba(15,23,42,0.05);
    border: 1px solid rgba(15,23,42,0.1);
    backdrop-filter: blur(10px);
    color: #1e293b !important;
}

.btn-vibrant-tech {
    background: linear-gradient(135deg,#00b4d8,#4361ee);
    border: none;
    color: white !important;
    transition: all 0.3s;
}

    .btn-vibrant-tech:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 30px rgba(0,180,216,0.4);
    }

.dashboard-frame-vibrant {
    background: rgba(255,255,255,0.3);
    border-radius: 30px;
    padding: 15px;
    backdrop-filter: blur(20px);
    transition: 0.4s;
}

    .dashboard-frame-vibrant:hover {
        transform: translateY(-10px) rotate(1deg);
    }

/* GIỚI THIỆU */
.about-section {
    background: linear-gradient(to bottom,#f0f7ff,#ffffff);
}

.stacked-card {
    border-radius: 20px;
    padding: 1.5rem;
    background: white;
    transition: 0.3s;
}

    .stacked-card:hover {
        transform: scale(1.03);
        box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    }

.icon-wrapper {
    width: 60px;
    height: 60px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
}

/* Card colors */
.card-1 {
    border-top: 5px solid #4cc9f0;
}

.card-2 {
    border-top: 5px solid #f72585;
}

.card-3 {
    border-top: 5px solid #4361ee;
}

.card-4 {
    border-top: 5px solid #ffba08;
}

.card-5 {
    border-top: 5px solid #9c27b0;
}

/* TÍNH NĂNG */
.bg-light-gray {
    background-color: #f8fafc;
}

.flip-theme-card {
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 2.5rem 2rem;
    height: 100%;
    transition: 0.4s;
    position: relative;
}

    .flip-theme-card:hover {
        background: #0f172a;
        transform: translateY(-8px);
        box-shadow: 0 20px 25px rgba(15,23,42,0.2);
    }

    .flip-theme-card .icon-box {
        width: 64px;
        height: 64px;
        border-radius: 16px;
        background: #eff6ff;
        color: #2563eb;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.75rem;
        margin-bottom: 1.5rem;
    }

    .flip-theme-card:hover .icon-box {
        background: rgba(255,255,255,0.1);
        color: #60a5fa;
    }

    .flip-theme-card:hover .card-title {
        color: white;
    }

    .flip-theme-card:hover .card-text {
        color: #94a3b8;
    }

/* LỢI ÍCH */
.elegant-light-section {
    background: #ffffff;
    border-top: 1px solid #e2e8f0;
}

.benefit-line-item-light {
    display: flex;
    align-items: flex-start;
    padding: 2rem 0;
    border-bottom: 1px solid #f1f5f9;
    transition: 0.3s;
}

.benefit-line-icon-light {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: #f8fafc;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1.5rem;
    border: 1px solid #e2e8f0;
}

.benefit-line-item-light:hover {
    padding-left: 15px;
    background: linear-gradient(90deg,#eff6ff,transparent);
}

    .benefit-line-item-light:hover .benefit-line-icon-light {
        background: #2563eb;
        color: white;
    }

.process-timeline-premium {
    background: var(--bg-main);
}

.timeline-curved::before {
    content: '';
    position: absolute;
    left: 15px;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom,#4cc9f0,#3a0ca3);
}

.timeline-step-premium {
    display: flex;
    margin-bottom: 30px;
    padding-left: 50px;
}

.step-icon-premium {
    width: 70px;
    height: 70px;
    border-radius: 20px;
    background: white;
    border: 4px solid var(--primary-vibrant);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
}

.step-content {
    margin-left: 20px;
    background: white;
    border-radius: 20px;
    padding: 1.5rem;
    border: 1px solid rgba(0,0,0,0.05);
}
/* --- QUY TRÌNH SỐ HÓA --- */

.process-timeline-premium {
    background-color: #f8fbff;
}

.timeline-curved {
    position: relative;
}

    .timeline-curved::before {
        content: "";
        top: 40px;
        position: absolute;
        left: 30px;
        top: 0;
        width: 4px;
        height: calc(100% - 40px);
        background: linear-gradient(to bottom,#4cc9f0,#3a0ca3);
        border-radius: 10px;
    }

.timeline-step-premium {
    display: flex;
    align-items: flex-start;
    margin-bottom: 40px;
    padding-left: 80px;
    position: relative;
}

.step-icon-premium {
    position: absolute;
    left: 0;
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: white;
    border: 4px solid #4361ee;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 20px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
}

.step-content {
    background: white;
    border-radius: 16px;
    padding: 20px;
    border: 1px solid #e5e7eb;
    width: 100%;
    transition: all 0.3s ease;
}

.timeline-step-premium:hover .step-content {
    transform: translateY(-4px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}
.timeline-step-premium {
    transition: all 0.3s ease;
}

.step-icon-premium {
    transition: all 0.3s ease;
}

.step-content {
    transition: all 0.3s ease;
}

.timeline-step-premium:hover .step-content {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.timeline-step-premium:hover .step-icon-premium {
    transform: scale(1.15) rotate(8deg);
    box-shadow: 0 10px 25px rgba(67,97,238,0.3);
}

.timeline-step-premium:hover {
    background: linear-gradient(90deg, rgba(67,97,238,0.05), transparent);
    border-radius: 20px;
    padding-left: 55px;
}