/* Global Styles for Zero Studio aesthetic */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;700;900&family=Noto+Sans+KR:wght@300;400;700&family=Pretendard:wght@100..900&display=swap');

:root {
    --bg-primary: #ffffff;
    --text-primary: #111111;
    --accent-blue: #3b82f6;
    --border-color: #e5e7eb;
}

body {
    font-family: 'Pretendard', 'Noto Sans KR', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    overflow-x: hidden;
}

h1, h2, h3, h4, .font-inter {
    font-family: 'Inter', sans-serif;
    letter-spacing: -0.04em;
    font-weight: 800;
}

.grid-border {
    border: 1px solid var(--border-color);
}

.nav-link {
    position: relative;
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    padding-bottom: 2px;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--accent-blue);
    transition: width 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.nav-link:hover::after {
    width: 100%;
}

.btn-black {
    background: var(--text-primary);
    color: white;
    padding: 0.75rem 1.5rem;
    font-weight: 700;
    transition: all 0.3s ease;
}

.btn-black:hover {
    background: var(--accent-blue);
}

.case-study-card:hover img {
    transform: scale(1.05);
}