/* ==============================================
   친절한아이티 — Premium Finance Landing Page
   Pretendard + JetBrains Mono
   ============================================== */

:root {
    --bg:         #020617;
    --surface:    rgba(15, 23, 42, 0.65);
    --surface-2:  rgba(30, 41, 59, 0.45);
    --green:      #4ade80;
    --green-15:   rgba(74, 222, 128, 0.15);
    --green-25:   rgba(74, 222, 128, 0.25);
    --cyan:       #22d3ee;
    --red:        #f87171;
    --purple:     #a78bfa;
    --white:      #f1f5f9;
    --gray:       #94a3b8;
    --gray-dim:   #475569;
    --border:     rgba(148, 163, 184, 0.08);
    --border-2:   rgba(148, 163, 184, 0.12);
    --r:          16px;
    --r-sm:       10px;
    --ease:       cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    background: var(--bg);
    color: var(--gray);
    font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { display: block; max-width: 100%; }

/* ===== BG Effects ===== */
.bg-grid {
    position: fixed; inset: 0; z-index: -2;
    background-image:
        linear-gradient(rgba(148,163,184,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(148,163,184,0.025) 1px, transparent 1px);
    background-size: 64px 64px;
}
.glow {
    position: fixed; border-radius: 50%; z-index: -1;
    filter: blur(130px); pointer-events: none;
    animation: gPulse 10s ease-in-out infinite alternate;
}
.glow-1 { width: 600px; height: 600px; top: -80px; right: -80px; background: radial-gradient(circle, rgba(74,222,128,0.06), transparent 70%); }
.glow-2 { width: 500px; height: 500px; bottom: 200px; left: -180px; background: radial-gradient(circle, rgba(34,211,238,0.05), transparent 70%); animation-delay: 5s; }
@keyframes gPulse { 0% { opacity: .5; transform: scale(1); } 100% { opacity: 1; transform: scale(1.12); } }

/* ===== TradingView Ticker ===== */
.tv-ticker-wrap {
    position: fixed; top: 0; left: 0; width: 100%;
    z-index: 1100; height: 44px;
    background: rgba(2, 6, 23, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.tradingview-widget-container { height: 44px; }

/* ===== Header ===== */
header {
    position: fixed; top: 44px; left: 0; width: 100%;
    z-index: 1000; padding: 14px 0;
    transition: all 0.4s var(--ease);
}
header.scrolled {
    background: rgba(2, 6, 23, 0.88);
    backdrop-filter: blur(20px) saturate(1.5);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
}
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.nav { display: flex; justify-content: space-between; align-items: center; }

.logo { display: flex; align-items: center; gap: 10px; }
.logo-img {
    width: 36px; height: 36px; border-radius: 50%; object-fit: cover;
    border: 1.5px solid var(--green);
    box-shadow: 0 0 12px var(--green-25);
    transition: box-shadow 0.3s;
}
.logo:hover .logo-img { box-shadow: 0 0 22px var(--green-25); }
.logo-text { font-weight: 800; font-size: 1.15rem; color: var(--white); letter-spacing: -0.5px; }
.logo-green { color: var(--green); }

nav ul { display: flex; list-style: none; gap: 28px; align-items: center; }
nav a { font-size: 0.85rem; font-weight: 500; color: var(--gray); transition: color 0.25s; }
nav a:hover { color: var(--white); }

.btn-subscribe {
    display: inline-flex; align-items: center; gap: 6px;
    background: var(--green); color: var(--bg) !important;
    padding: 8px 18px; border-radius: 8px;
    font-weight: 700; font-size: 0.82rem;
    transition: all 0.3s var(--ease);
}
.btn-subscribe:hover { transform: translateY(-1px); box-shadow: 0 4px 20px var(--green-25); }
.btn-subscribe svg { flex-shrink: 0; }

/* ===== HERO ===== */
.hero {
    position: relative;
    padding: 220px 0 80px;
    min-height: 100vh;
    display: flex; align-items: center;
}
.hero-bg {
    position: absolute; inset: 0; z-index: -1;
    overflow: hidden;
}
.hero-bg-img {
    width: 100%; height: 100%;
    object-fit: cover; object-position: center;
    opacity: 0.25;
}
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, var(--bg) 0%, rgba(2,6,23,0.6) 40%, var(--bg) 100%);
}
.hero-inner { position: relative; z-index: 1; }
.hero-content { max-width: 700px; }

.hero-badge {
    display: inline-flex; align-items: center; gap: 10px;
    font-family: 'Pretendard', sans-serif;
    font-size: 0.78rem; font-weight: 700;
    letter-spacing: 1px; color: var(--green);
    background: var(--green-15);
    padding: 7px 18px; border-radius: 20px;
    border: 1px solid rgba(74, 222, 128, 0.2);
    margin-bottom: 28px;
}
.pulse-dot {
    width: 8px; height: 8px;
    background: var(--green); border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(74,222,128,0.4); }
    50% { opacity: .6; box-shadow: 0 0 0 8px rgba(74,222,128,0); }
}

.hero h1 { margin-bottom: 24px; }
.h1-line {
    display: block;
    font-size: 3.6rem; font-weight: 900;
    line-height: 1.18; letter-spacing: -2px;
    color: var(--white);
    opacity: 0; transform: translateY(28px);
    transition: all 0.8s var(--ease);
}
body.loaded .h1-line { opacity: 1; transform: translateY(0); }
body.loaded .h1-1 { transition-delay: 0.1s; }
body.loaded .h1-2 { transition-delay: 0.25s; }
body.loaded .h1-3 { transition-delay: 0.4s; }

.hero em, h2 em {
    font-style: normal;
    background: linear-gradient(135deg, var(--green), var(--cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: 1.05rem; line-height: 1.8;
    color: var(--gray); max-width: 540px;
    margin-bottom: 36px;
    opacity: 0; transform: translateY(18px);
    transition: all 0.8s var(--ease) 0.5s;
}
body.loaded .hero-sub { opacity: 1; transform: translateY(0); }

.hero-btns {
    display: flex; gap: 14px; align-items: center;
    opacity: 0; transform: translateY(18px);
    transition: all 0.8s var(--ease) 0.6s;
}
body.loaded .hero-btns { opacity: 1; transform: translateY(0); }

.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 14px 26px; border-radius: var(--r-sm);
    font-weight: 700; font-size: 0.9rem;
    transition: all 0.3s var(--ease);
    font-family: 'Pretendard', sans-serif;
}
.btn-green { background: var(--green); color: var(--bg); }
.btn-green:hover { transform: translateY(-2px); box-shadow: 0 8px 30px var(--green-25); }
.btn-green svg { flex-shrink: 0; }
.btn-outline { background: transparent; color: var(--gray); border: 1px solid var(--border-2); }
.btn-outline:hover { color: var(--green); border-color: var(--green); }

/* Hero Stats */
.hero-stats-bar {
    display: flex; align-items: center; gap: 40px;
    margin-top: 72px; padding-top: 36px;
    border-top: 1px solid var(--border);
    opacity: 0; transform: translateY(18px);
    transition: all 0.8s var(--ease) 0.8s;
}
body.loaded .hero-stats-bar { opacity: 1; transform: translateY(0); }
.hstat-num {
    display: block; font-family: 'JetBrains Mono', monospace;
    font-size: 2rem; font-weight: 800;
    color: var(--white); letter-spacing: -1px;
}
.hstat-label {
    font-size: 0.75rem; color: var(--gray-dim);
    font-weight: 500; text-transform: uppercase;
    letter-spacing: 1px; margin-top: 2px;
}
.hstat-sep { width: 1px; height: 36px; background: var(--border); }

/* ===== Section Common ===== */
.sec-head {
    margin-bottom: 48px;
    opacity: 0; transform: translateY(24px);
    transition: all 0.6s var(--ease);
}
.sec-head.visible { opacity: 1; transform: translateY(0); }
.sec-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.68rem; font-weight: 700;
    letter-spacing: 3px; color: var(--green);
    display: block; margin-bottom: 12px;
}
.sec-head h2 {
    font-size: 2.2rem; font-weight: 800;
    color: var(--white); letter-spacing: -1px;
    margin-bottom: 12px;
}
.sec-head p { font-size: 0.95rem; color: var(--gray); max-width: 480px; }

/* ===== Strategy Bento ===== */
.sec-strategy { 
    padding: 100px 0; 
    position: relative;
    background: url('strategy_bg.png') center/cover no-repeat;
    background-attachment: fixed;
}
.sec-strategy::before {
    content: ''; position: absolute; inset: 0;
    background: rgba(2, 6, 23, 0.85);
    z-index: 0;
}
.sec-strategy .container { position: relative; z-index: 1; }
.bento {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}
.bento-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--r);
    padding: 32px;
    position: relative; overflow: hidden;
    transition: all 0.4s var(--ease);
    backdrop-filter: blur(10px);
    opacity: 0; transform: translateY(24px);
}
.bento-card.visible { opacity: 1; transform: translateY(0); }
.bento-card:hover {
    border-color: rgba(74,222,128,0.12);
    transform: translateY(-3px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.25);
}
.card-glow-effect {
    position: absolute; top: -50px; right: -50px;
    width: 180px; height: 180px; border-radius: 50%;
    background: radial-gradient(circle, var(--green-15), transparent 70%);
    opacity: 0; transition: opacity 0.4s; pointer-events: none;
}
.bento-card:hover .card-glow-effect { opacity: 1; }
.bento-main { grid-row: span 2; display: flex; flex-direction: column; }
.bento-wide { grid-column: span 2; }

.tag {
    display: inline-block; font-size: 0.65rem; font-weight: 700;
    letter-spacing: 1.5px; padding: 4px 10px;
    border-radius: 6px; margin-bottom: 18px;
}
.tag-green  { background: rgba(74,222,128,0.1); color: var(--green); }
.tag-cyan   { background: rgba(34,211,238,0.1); color: var(--cyan); }
.tag-red    { background: rgba(248,113,113,0.1); color: var(--red); }
.tag-purple { background: rgba(167,139,250,0.1); color: var(--purple); }

.bento-card h3 {
    font-size: 1.4rem; font-weight: 800;
    color: var(--white); line-height: 1.35;
    margin-bottom: 12px; letter-spacing: -0.3px;
}
.bento-main h3 { font-size: 1.7rem; }
.money {
    font-family: 'JetBrains Mono', monospace;
    font-size: 2rem; color: var(--green);
    text-shadow: 0 0 24px var(--green-25);
}
.bento-card p { font-size: 0.85rem; line-height: 1.7; }
.card-cta {
    display: inline-block; margin-top: 18px;
    color: var(--green); font-weight: 600; font-size: 0.82rem;
    transition: letter-spacing 0.3s;
}
.card-cta:hover { letter-spacing: 1px; }

/* ===== Video Grid ===== */
.sec-videos { padding: 80px 0; }
.vid-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 14px;
}
.vid-card {
    display: block; border-radius: var(--r); overflow: hidden;
    background: var(--surface); border: 1px solid var(--border);
    transition: all 0.4s var(--ease);
    opacity: 0; transform: translateY(24px);
}
.vid-card.visible { opacity: 1; transform: translateY(0); }
.vid-card:hover {
    transform: translateY(-5px);
    border-color: rgba(74,222,128,0.12);
    box-shadow: 0 16px 48px rgba(0,0,0,0.3);
}
.vid-thumb {
    position: relative; aspect-ratio: 16/9; overflow: hidden;
    background: #0f172a;
}
.vid-thumb img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.4s var(--ease);
}
.vid-card:hover .vid-thumb img { transform: scale(1.05); }
.vid-play {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    background: rgba(0,0,0,0.25);
    opacity: 0; transition: opacity 0.3s;
}
.vid-card:hover .vid-play { opacity: 1; }
.vid-play span {
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    background: var(--green); color: var(--bg);
    border-radius: 50%; font-size: 0.85rem;
    box-shadow: 0 4px 16px var(--green-25);
}
.vid-views {
    position: absolute; bottom: 8px; right: 8px;
    background: rgba(0,0,0,0.75); backdrop-filter: blur(4px);
    padding: 2px 8px; border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem; font-weight: 700; color: var(--white);
}
.vid-info { padding: 14px; }
.vid-info h4 {
    font-size: 0.82rem; font-weight: 700;
    color: var(--white); line-height: 1.5; margin-bottom: 6px;
    display: -webkit-box; -webkit-line-clamp: 2;
    -webkit-box-orient: vertical; overflow: hidden;
}
.vid-meta { font-size: 0.7rem; color: var(--green); font-weight: 600; }

/* ===== Shorts ===== */
.sec-shorts { padding: 80px 0; }
.shorts-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
}
.short-card {
    display: block; border-radius: var(--r); overflow: hidden;
    background: var(--surface); border: 1px solid var(--border);
    transition: all 0.4s var(--ease);
    opacity: 0; transform: translateY(24px);
}
.short-card.visible { opacity: 1; transform: translateY(0); }
.short-card:hover {
    transform: translateY(-5px);
    border-color: rgba(74,222,128,0.12);
    box-shadow: 0 14px 40px rgba(0,0,0,0.25);
}
.short-thumb {
    position: relative; aspect-ratio: 9/14; overflow: hidden;
    background: #0f172a;
}
.short-thumb img {
    width: 100%; height: 100%; object-fit: cover;
    transition: transform 0.4s var(--ease);
}
.short-card:hover .short-thumb img { transform: scale(1.05); }
.short-play {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.4rem; color: white;
    background: rgba(0,0,0,0.2);
    opacity: 0; transition: opacity 0.3s;
}
.short-card:hover .short-play { opacity: 1; }
.short-views {
    position: absolute; bottom: 8px; left: 8px;
    background: rgba(0,0,0,0.7); backdrop-filter: blur(4px);
    padding: 2px 8px; border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.6rem; font-weight: 700; color: var(--white);
}
.short-card p {
    padding: 12px;
    font-size: 0.75rem; font-weight: 600;
    color: var(--white); line-height: 1.5;
}

/* ===== CTA ===== */
.sec-cta { padding: 80px 0 120px; }
.cta-card {
    position: relative;
    background: url('cta_bg.png') center/cover no-repeat;
    border: 1px solid var(--border);
    border-radius: 24px; padding: 72px 56px;
    overflow: hidden; text-align: center;
}
.cta-card::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(15,23,42,0.85), rgba(2,6,23,0.95));
    z-index: 0;
}
.cta-glow {
    position: absolute; top: -100px; left: 50%;
    transform: translateX(-50%);
    width: 400px; height: 400px;
    background: radial-gradient(circle, var(--green-15), transparent 70%);
    border-radius: 50%; pointer-events: none;
}
.cta-inner { position: relative; z-index: 1; }
.cta-inner h2 {
    font-size: 2.2rem; font-weight: 800;
    color: var(--white); letter-spacing: -1px;
    line-height: 1.3; margin-bottom: 14px;
}
.cta-inner p {
    font-size: 0.92rem; color: var(--gray);
    max-width: 480px; margin: 0 auto 32px;
}
.cta-form {
    display: flex; gap: 10px;
    max-width: 440px; margin: 0 auto;
}
.cta-form input {
    flex: 1;
    background: rgba(2, 6, 23, 0.6);
    border: 1px solid rgba(148,163,184,0.12);
    padding: 13px 18px; border-radius: var(--r-sm);
    color: var(--white); font-size: 0.86rem;
    font-family: 'Pretendard', sans-serif;
    outline: none; transition: border-color 0.3s;
}
.cta-form input:focus { border-color: var(--green); }
.cta-form input::placeholder { color: var(--gray-dim); }
.cta-form button {
    background: var(--green); color: var(--bg);
    border: none; padding: 13px 26px; border-radius: var(--r-sm);
    font-weight: 700; font-size: 0.86rem;
    font-family: 'Pretendard', sans-serif;
    cursor: pointer; transition: all 0.3s var(--ease);
    white-space: nowrap;
}
.cta-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--green-25);
}

/* ===== Footer ===== */
footer {
    border-top: 1px solid var(--border);
    padding: 36px 0;
}
.footer-inner {
    display: flex; align-items: center;
    justify-content: space-between;
    flex-wrap: wrap; gap: 14px;
}
.footer-brand {
    display: flex; align-items: center; gap: 8px;
    font-weight: 700; font-size: 0.88rem; color: var(--white);
}
.footer-logo { width: 22px; height: 22px; border-radius: 50%; object-fit: cover; }
.footer-links { display: flex; gap: 20px; }
.footer-links a { font-size: 0.78rem; color: var(--gray-dim); font-weight: 500; transition: color 0.3s; }
.footer-links a:hover { color: var(--green); }
.footer-copy {
    width: 100%; text-align: center;
    font-size: 0.7rem; color: var(--gray-dim); margin-top: 8px;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .h1-line { font-size: 2.6rem; }
    .vid-grid { grid-template-columns: repeat(2, 1fr); }
    .shorts-grid { grid-template-columns: repeat(3, 1fr); }
    .bento-wide { grid-column: span 1; }
}
@media (max-width: 768px) {
    .tv-ticker-wrap { height: 50px; }
    .tradingview-widget-container { height: 50px; }
    header { top: 50px; padding: 8px 0; }
    .logo-text { display: none; } 
    nav ul { gap: 10px; }
    nav ul li:not(:last-child) { display: none; } /* Hide nav links except the subscribe button on mobile */
    .hero { padding: 140px 0 60px; min-height: auto; }
    .h1-line { font-size: 2rem; letter-spacing: -1px; }
    .hero-sub { font-size: 0.9rem; }
    .hero-stats-bar { flex-wrap: wrap; gap: 20px; margin-top: 48px; }
    .hstat-sep { display: none; }
    .bento { grid-template-columns: 1fr; }
    .bento-main { grid-row: span 1; }
    .bento-wide { grid-column: span 1; }
    .vid-grid { grid-template-columns: repeat(2, 1fr); }
    .shorts-grid { grid-template-columns: repeat(2, 1fr); }
    .shorts-grid .short-card:nth-child(n+5) { display: none; }
    .sec-head h2 { font-size: 1.7rem; }
    .cta-card { padding: 44px 20px; }
    .cta-inner h2 { font-size: 1.5rem; }
    .cta-form { flex-direction: column; }
    nav ul { gap: 14px; }
    nav a { font-size: 0.76rem; }
    .btn-subscribe { padding: 6px 12px; font-size: 0.72rem; }
}
@media (max-width: 480px) {
    .h1-line { font-size: 1.5rem; }
    .vid-grid { grid-template-columns: 1fr; }
    .shorts-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-btns { flex-direction: column; align-items: stretch; width: 100%; }
    .btn { width: 100%; justify-content: center; }
    .logo-text { display: none; }
}