/* ==========================================================================
   Base & Theme Tokens
   ========================================================================== */
:root {
    --color-primary: #0b8a3b;
    --color-secondary: #2f855a;
    --color-text: #1f2933;
    --color-muted: #5a6473;
    --color-bg: #f6f7f8;
    --color-card: #ffffff;
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 12px 30px rgba(0, 0, 0, 0.08);
    --radius-md: 12px;
    --radius-lg: 18px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
}

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

body {
    margin: 0;
    font-family: 'Noto Sans KR', 'Noto Sans', sans-serif;
    color: var(--color-text);
    background-color: #f5f5f5;
    background-image: url("../img/background.svg");
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    line-height: 1.6;
    text-rendering: optimizeLegibility;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    display: block;
    max-width: 100%;
    height: auto;
}

p {
    margin: 0 0 var(--space-4);
    color: var(--color-muted);
}

h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--space-4);
    line-height: 1.3;
    color: var(--color-text);
}

.container {
    width: min(1200px, 92vw);
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-8);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 10px;
    font-weight: 600;
    border: 1px solid transparent;
    transition: all 0.2s ease;
}

.btn.primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.btn.primary:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.btn.ghost {
    background: #fff;
    color: var(--color-primary);
    border-color: #e3e8ef;
}

.btn.ghost:hover {
    box-shadow: var(--shadow-sm);
}

.btn.text {
    padding: 0;
    border: none;
    color: var(--color-primary);
    background: transparent;
    font-weight: 600;
}

.logo img {
    height: 48px;
}

/* Lazy loading helper */
img[loading="lazy"] {
    background: #e9edf2;
}