@font-face {
    font-family: 'Sora';
    src: url('/fonts/sora/Sora-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
}

@font-face {
    font-family: 'Sora';
    src: url('/fonts/sora/Sora-Bold.ttf') format('truetype');
    font-weight: 700;
    font-style: normal;
}

@font-face {
    font-family: 'DM Sans';
    src: url('/fonts/dm-sans/DMSans-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
}

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

:root {
    --c-navy: #206bc4;
    --c-navy2: #206bc4;
    --c-blue: #206bc4;
    --c-blue2: #206bc4;
    --c-sky: #E3F2FD;
    --c-teal: #206bc4;
    --c-teal2: #E1F5FE;
    --c-gold: #40C4FF;
    --c-gold2: #E1F5FE;
    --c-white: #FFFFFF;
    --c-off: #F0F6FF;
    --c-text: #0D2244;
    --c-muted: #4A6080;
    --c-border: #C5D9F0;
    --font-head: 'Sora', sans-serif;
    --font-body: 'DM Sans', sans-serif;
    --radius: 12px;
    --radius-sm: 8px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--c-text);
    background: var(--c-white);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}

/* ── NAV ── */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 5%;
    height: 68px;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--c-border);
    transition: box-shadow .2s;
}

    .nav.scrolled {
        box-shadow: 0 2px 16px rgba(11,26,51,.08);
    }

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-head);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--c-navy);
    text-decoration: none;
}

.nav-logo-img {
    height: 40px;
    width: auto;
    display: block;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

    .nav-links a {
        font-size: .9rem;
        color: var(--c-muted);
        text-decoration: none;
        font-weight: 400;
        transition: color .15s;
    }

        .nav-links a:hover {
            color: var(--c-navy);
        }

.btn-login {
    padding: .5rem 1.25rem;
    background: var(--c-navy);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: .875rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background .15s, transform .1s;
}

    .btn-login:hover {
        background: var(--c-blue);
    }

@media (max-width: 680px) {
    .nav-links {
        display: none;
    }
}

/* ── HERO ── */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 68px 5% 0;
    position: relative;
    overflow: hidden;
    background: var(--c-navy);
}
    /* Decorative background geometry */
    .hero::before {
        content: '';
        position: absolute;
        top: -10%;
        right: -5%;
        width: 60%;
        height: 120%;
        background: linear-gradient(135deg, #206bc4 0%, #1a5ba8 50%, #15468a 100%);
        clip-path: polygon(12% 0%, 100% 0%, 100% 100%, 0% 100%);
    }

    .hero::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(90deg, #206bc4, #206bc4, #40C4FF);
    }
/* Dot grid texture */
.hero-dots {
    position: absolute;
    inset: 0;
    z-index: 0;
    background-image: radial-gradient(rgba(255,255,255,.07) 1px, transparent 1px);
    background-size: 32px 32px;
}

.hero-inner {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
    padding: 6rem 0;
}

.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.15);
    border-radius: 100px;
    padding: .35rem 1rem;
    font-size: .78rem;
    font-weight: 500;
    letter-spacing: .06em;
    color: rgba(255,255,255,.75);
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

    .hero-eyebrow span.dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: #40C4FF;
        animation: pulse 2s infinite;
    }

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: .5;
        transform: scale(.8);
    }
}

.hero h1 {
    font-family: var(--font-head);
    font-size: clamp(2rem, 4vw, 3.1rem);
    font-weight: 700;
    line-height: 1.18;
    color: #fff;
    margin-bottom: 1.5rem;
}

    .hero h1 em {
        font-style: normal;
        color: var(--c-gold);
    }

.hero-bullets {
    list-style: none;
    margin-bottom: 2.5rem;
}

    .hero-bullets li {
        display: flex;
        align-items: flex-start;
        gap: 10px;
        font-size: .95rem;
        color: rgba(255,255,255,.72);
        margin-bottom: .65rem;
    }

        .hero-bullets li::before {
            content: '';
            flex-shrink: 0;
            width: 18px;
            height: 18px;
            margin-top: 2px;
            border-radius: 50%;
            background: rgba(32,107,196,.25);
            border: 1.5px solid #206bc4;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='M2 6l3 3 5-5' stroke='%23206bc4' stroke-width='1.5' fill='none' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: center;
        }

.hero-cta {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn-primary {
    padding: .75rem 2rem;
    background: #206bc4;
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: .95rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background .15s, transform .1s;
}

    .btn-primary:hover {
        background: #0277BD;
        transform: translateY(-1px);
    }

.btn-ghost {
    padding: .75rem 1.75rem;
    background: transparent;
    color: rgba(255,255,255,.8);
    border: 1px solid rgba(255,255,255,.25);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: .95rem;
    font-weight: 400;
    cursor: pointer;
    text-decoration: none;
    transition: border-color .15s, color .15s;
}

    .btn-ghost:hover {
        border-color: rgba(255,255,255,.6);
        color: #fff;
    }

/* Hero right — image placeholder */
.hero-visual {
    position: relative;
}

.hero-img-frame {
    position: relative;
    overflow: hidden;
    display: block;
}

.hero-slide {
    width: 100%;
    height: auto;
    display: block;
    transition: opacity 1s ease-in-out;
}

    .hero-slide:not(.active) {
        position: absolute;
        top: 0;
        left: 0;
        opacity: 0;
        pointer-events: none;
    }

    .hero-slide.active {
        opacity: 1;
        position: relative; 
    }

    .hero-img-frame img {
        width: 100%;
        height: 100%;
        object-fit: fill;
        display: block;
    }

.hero-img-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .75rem;
    color: rgba(255,255,255,.3);
    font-size: .82rem;
}

    .hero-img-placeholder svg {
        width: 48px;
        height: 48px;
        opacity: .35;
    }

.hero-badge {
    position: absolute;
    bottom: -16px;
    left: -16px;
    background: var(--c-white);
    border-radius: var(--radius-sm);
    padding: .65rem 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 8px 24px rgba(0,0,0,.18);
}

.hero-badge-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background: #E1F5FE;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

    .hero-badge-icon svg {
        width: 18px;
        height: 18px;
        fill: #206bc4;
    }

.hero-badge-text {
    font-size: .78rem;
    color: var(--c-muted);
    line-height: 1.3;
}

    .hero-badge-text strong {
        display: block;
        font-size: .85rem;
        color: var(--c-text);
    }

@media (max-width: 860px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        padding: 4rem 0;
    }

    .hero-visual {
        display: none;
    }
}

/* ── STATS STRIP ── */
.stats {
    background: var(--c-navy2);
    padding: 1.75rem 5%;
}

.stats-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 1.5rem;
}

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

.stat-num {
    font-family: var(--font-head);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--c-gold);
}

.stat-label {
    font-size: .8rem;
    color: rgba(255,255,255,.55);
    margin-top: .2rem;
}

/* ── SECTION COMMON ── */
section {
    padding: 5rem 5%;
}

.section-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-tag {
    display: inline-block;
    background: var(--c-sky);
    color: var(--c-blue);
    font-size: .75rem;
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    padding: .3rem .9rem;
    border-radius: 100px;
    margin-bottom: .9rem;
    border: 1px solid rgba(21,101,192,.15);
}

.section-header h2 {
    font-family: var(--font-head);
    font-size: clamp(1.5rem, 3vw, 2.1rem);
    font-weight: 700;
    color: var(--c-navy);
    line-height: 1.25;
    margin-bottom: .75rem;
}

.section-header p {
    font-size: 1rem;
    color: var(--c-muted);
    max-width: 560px;
    margin: 0 auto;
}

/* ── CRITERIA (tiêu chí phát triển) ── */
.criteria {
    background: var(--c-off);
}

.criteria-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.criteria-card {
    background: var(--c-white);
    border: 1px solid var(--c-border);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    transition: box-shadow .2s, transform .2s;
    position: relative;
    overflow: hidden;
}

    .criteria-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: var(--accent, #206bc4);
        transform: scaleX(0);
        transform-origin: left;
        transition: transform .25s ease;
    }

    .criteria-card:hover {
        box-shadow: 0 8px 28px rgba(0,0,0,.07);
        transform: translateY(-3px);
    }

        .criteria-card:hover::before {
            transform: scaleX(1);
        }

.criteria-icon {
    width: 48px;
    height: 48px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

    .criteria-icon svg {
        width: 24px;
        height: 24px;
    }

.criteria-card h3 {
    font-family: var(--font-head);
    font-size: 1rem;
    font-weight: 600;
    color: var(--c-navy);
    margin-bottom: .5rem;
}

.criteria-card p {
    font-size: .875rem;
    color: var(--c-muted);
    line-height: 1.6;
}

/* ── HOW IT WORKS ── */
.how {
    background: var(--c-white);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 0;
    position: relative;
}

    .steps::before {
        content: '';
        position: absolute;
        top: 36px;
        left: 10%;
        right: 10%;
        height: 1px;
        background: var(--c-border);
        z-index: 0;
    }

.step {
    text-align: center;
    padding: 0 1.5rem;
    position: relative;
    z-index: 1;
}

.step-num {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--c-navy2) 0%, var(--c-blue) 100%);
    color: #fff;
    font-family: var(--font-head);
    font-size: 1.4rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    border: 4px solid var(--c-white);
    outline: 2px solid var(--c-teal);
}

.step h3 {
    font-family: var(--font-head);
    font-size: .95rem;
    font-weight: 600;
    margin-bottom: .4rem;
    color: var(--c-navy);
}

.step p {
    font-size: .83rem;
    color: var(--c-muted);
}

@media (max-width: 640px) {
    .steps::before {
        display: none;
    }

    .steps {
        gap: 2rem;
    }
}

/* ── FEATURES ── */
.features {
    background: var(--c-navy);
}

    .features .section-tag {
        background: rgba(255,255,255,.1);
        color: rgba(255,255,255,.7);
    }

    .features .section-header h2 {
        color: #fff;
    }

    .features .section-header p {
        color: rgba(255,255,255,.55);
    }

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.feat-card {
    background: rgba(255,255,255,.05);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--radius);
    padding: 1.75rem;
    transition: background .2s;
}

    .feat-card:hover {
        background: rgba(255,255,255,.09);
    }

.feat-icon {
    width: 42px;
    height: 42px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.1rem;
}

    .feat-icon svg {
        width: 22px;
        height: 22px;
    }

.feat-card h3 {
    font-family: var(--font-head);
    font-size: .95rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: .4rem;
}

.feat-card p {
    font-size: .83rem;
    color: rgba(255,255,255,.5);
    line-height: 1.6;
}

/* ── CTA BOTTOM ── */
.cta-section {
    background: var(--c-off);
    text-align: center;
}

.cta-box {
    max-width: 640px;
    margin: 0 auto;
}

    .cta-box h2 {
        font-family: var(--font-head);
        font-size: clamp(1.4rem, 3vw, 2rem);
        font-weight: 700;
        color: var(--c-navy);
        margin-bottom: .75rem;
    }

    .cta-box p {
        color: var(--c-muted);
        margin-bottom: 2rem;
    }

.btn-primary-dark {
    padding: .85rem 2.5rem;
    background: var(--c-navy);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    transition: background .15s, transform .1s;
}

    .btn-primary-dark:hover {
        background: var(--c-blue2);
        transform: translateY(-1px);
    }

/* ── FOOTER ── */
footer {
    background: var(--c-navy);
    color: rgba(255,255,255,.45);
    text-align: center;
    padding: 1.5rem 5%;
    font-size: .82rem;
}

    footer a {
        color: rgba(255,255,255,.55);
        text-decoration: none;
    }

        footer a:hover {
            color: #fff;
        }

/* ── RESPONSIVE: 3-col grids ── */
@media (max-width: 900px) {
    .criteria-grid,
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 560px) {
    .criteria-grid,
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* ══════════════════════════════════
   SCROLL ANIMATIONS
══════════════════════════════════ */

[data-reveal] {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.55s cubic-bezier(.22,.68,0,1.2), transform 0.55s cubic-bezier(.22,.68,0,1.2);
}

[data-reveal="left"] {
    transform: translateX(-36px);
}

[data-reveal="right"] {
    transform: translateX(36px);
}

[data-reveal="scale"] {
    transform: translateY(20px) scale(0.95);
}

[data-reveal="fade"] {
    transform: none;
}

[data-reveal].is-visible {
    opacity: 1;
    transform: none;
}

[data-stagger] > * {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.5s cubic-bezier(.22,.68,0,1.2), transform 0.5s cubic-bezier(.22,.68,0,1.2);
}

[data-stagger].is-visible > *:nth-child(1) {
    opacity: 1;
    transform: none;
    transition-delay: 0.05s;
}

[data-stagger].is-visible > *:nth-child(2) {
    opacity: 1;
    transform: none;
    transition-delay: 0.13s;
}

[data-stagger].is-visible > *:nth-child(3) {
    opacity: 1;
    transform: none;
    transition-delay: 0.21s;
}

[data-stagger].is-visible > *:nth-child(4) {
    opacity: 1;
    transform: none;
    transition-delay: 0.29s;
}

[data-stagger].is-visible > *:nth-child(5) {
    opacity: 1;
    transform: none;
    transition-delay: 0.37s;
}

[data-stagger].is-visible > *:nth-child(6) {
    opacity: 1;
    transform: none;
    transition-delay: 0.45s;
}

[data-row-stagger] > * {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.48s cubic-bezier(.22,.68,0,1.2), transform 0.48s cubic-bezier(.22,.68,0,1.2);
}

[data-row-stagger].is-visible > *:nth-child(3n+1) {
    opacity: 1;
    transform: none;
    transition-delay: 0.05s;
}

[data-row-stagger].is-visible > *:nth-child(3n+2) {
    opacity: 1;
    transform: none;
    transition-delay: 0.18s;
}

[data-row-stagger].is-visible > *:nth-child(3n+3) {
    opacity: 1;
    transform: none;
    transition-delay: 0.31s;
}

.stats-inner [data-reveal] {
    transition-delay: calc(var(--i, 0) * 0.1s);
}

.steps [data-reveal] {
    transition-delay: calc(var(--i, 0) * 0.15s);
}