/* ============================================
   Sarara - Minimal Modern Standard
   ============================================ */

:root {
    --color-bg: #ffffff;
    --color-surface: #fafafa;
    --color-border: #e0e0e0;
    --color-border-light: #f0f0f0;
    --color-text: #111111;
    --color-text-secondary: #555555;
    --color-text-muted: #888888;
    --color-primary: #000000;
    --color-primary-hover: #333333;
    --font-primary: 'Inter', 'Helvetica Neue', 'Helvetica', 'Noto Sans JP', sans-serif;
    --transition-fast: 300ms cubic-bezier(0.2, 0.8, 0.2, 1);
    --transition-normal: 500ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

body {
    font-family: var(--font-primary);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

/* Landing Layout */
.landing {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.landing-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 40px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.logo-icon svg {
    display: block;
}

.admin-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.admin-link:hover {
    color: var(--color-text);
}

.landing-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 100px 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.hero {
    margin-bottom: 80px;
    max-width: 800px;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 32px;
}

.hero-title-line {
    display: block;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp var(--transition-normal) forwards;
}

.hero-title-line:nth-child(2) {
    animation-delay: 0.1s;
    color: var(--color-text-secondary);
}

.hero-description {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 600px;
    opacity: 0;
    animation: fadeUp var(--transition-normal) 0.2s forwards;
}

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    opacity: 0;
    animation: fadeUp var(--transition-normal) 0.4s forwards;
    border-top: 1px solid var(--color-border);
    padding-top: 60px;
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.feature-desc {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.landing-footer {
    padding: 40px;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 768px) {
    .landing-header {
        padding: 20px 24px;
    }

    .landing-content {
        padding: 60px 24px;
    }

    .features {
        grid-template-columns: 1fr;
        gap: 32px;
        padding-top: 40px;
    }

    .hero {
        margin-bottom: 60px;
    }
}