@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.css");

@font-face {
    font-family: 'Paperlogy';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-8ExtraBold.woff2') format('woff2');
    font-weight: 800;
    font-style: normal;
}
@font-face {
    font-family: 'Paperlogy';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-7Bold.woff2') format('woff2');
    font-weight: 700;
    font-style: normal;
}
@font-face {
    font-family: 'Paperlogy';
    src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/2408-3@1.0/Paperlogy-5Medium.woff2') format('woff2');
    font-weight: 500;
    font-style: normal;
}

:root {
    --bs-body-bg: #0f172a;
    --bs-body-color: #f1f5f9;
    --primary-accent: #38bdf8;
    --secondary-accent: #818cf8;
    --card-bg: #1e293b;
    --border-color: #334155;
    --font-pretendard: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, Roboto, sans-serif;
    --font-paperlogy: 'Paperlogy', sans-serif;
}

body {
    font-family: var(--font-pretendard);
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    background-image: radial-gradient(circle at 10% 20%, rgba(56, 189, 248, 0.05) 0%, transparent 40%),
                      radial-gradient(circle at 90% 80%, rgba(129, 140, 248, 0.05) 0%, transparent 40%);
    background-attachment: fixed;
    word-break: keep-all;
}

h1, h2, h3, h4, h5, h6, .navbar-brand, .hero-title, .accordion-button {
    font-family: var(--font-paperlogy);
}

.navbar {
    background-color: rgba(15, 23, 42, 0.8) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--primary-accent) !important;
}

.hero-section {
    padding: 5rem 0 3rem;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-accent), var(--secondary-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
}

.badge-tech {
    font-size: 0.85rem;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 500;
    background: rgba(56, 189, 248, 0.1);
    color: var(--primary-accent);
    border: 1px solid rgba(56, 189, 248, 0.2);
    margin: 0 0.25rem 0.5rem;
}

.card-custom {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.card-custom:hover {
    transform: translateY(-5px);
    border-color: var(--primary-accent);
}

.quick-link-btn {
    background-color: rgba(56, 189, 248, 0.05);
    border: 1px solid var(--border-color);
    color: var(--bs-body-color);
    padding: 0.75rem 1.25rem;
    border-radius: 12px;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.quick-link-btn:hover {
    background-color: var(--primary-accent);
    border-color: var(--primary-accent);
    color: #0f172a;
}

.accordion-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    margin-bottom: 1rem;
    border-radius: 12px !important;
    overflow: hidden;
}

.accordion-button {
    background-color: var(--card-bg);
    color: var(--bs-body-color);
    font-weight: 600;
    border: none;
    padding: 1.25rem;
}

.accordion-button:not(.collapsed) {
    background-color: rgba(56, 189, 248, 0.08);
    color: var(--primary-accent);
    box-shadow: none;
}

.accordion-button::after {
    filter: invert(1);
}

.accordion-body {
    background-color: rgba(15, 23, 42, 0.4);
    border-top: 1px solid var(--border-color);
}

.table-custom {
    color: var(--bs-body-color);
    margin-bottom: 0;
}

.table-custom th {
    border-bottom: 2px solid var(--border-color);
    font-weight: 600;
    color: #94a3b8;
}

.table-custom td {
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.btn-action {
    padding: 0.4rem 0.8rem;
    font-size: 0.85rem;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s ease;
}

.btn-slide {
    background-color: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-slide:hover {
    background-color: #ef4444;
    color: white;
}

.btn-exercise {
    background-color: rgba(16, 185, 129, 0.1);
    color: #34d399;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.btn-exercise:hover {
    background-color: #10b981;
    color: white;
}

.text-muted-custom {
    color: #64748b;
}