@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    /* Color Palette */
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #e0e7ff;
    
    --bg-body: #f8fafc;
    --bg-surface: rgba(255, 255, 255, 0.85);
    --bg-card: #ffffff;
    
    --text-main: #0f172a;
    --text-muted: #64748b;
    
    --border-color: rgba(226, 232, 240, 0.8);
    
    --holiday-color: #f43f5e;
    --holiday-bg: #fff1f2;
    --holiday-border: #fecdd3;
    
    --cuti-color: #f59e0b;
    --cuti-bg: #fffbeb;
    --cuti-border: #fde68a;
    
    /* Shadows & Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --radius-md: 0.75rem;
    --radius-lg: 1.25rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    overflow-x: hidden;
    width: 100%;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--transition-smooth), color var(--transition-smooth);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a { color: inherit; text-decoration: none; transition: color var(--transition-fast); }
button, input, select, textarea { font-family: inherit; }
ul { list-style: none; }

/* Typography */
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.2; color: var(--text-main); }
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.text-holiday { color: var(--holiday-color) !important; }
.text-cuti { color: var(--cuti-color) !important; }
.font-bold { font-weight: 700; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }

/* Layout */
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.main-wrapper { flex: 1; padding: 3rem 0; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.grid { display: grid; }
.w-full { width: 100%; }

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--bg-surface);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
}
.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4.5rem;
}
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), #ec4899);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.navbar-brand svg { width: 32px; height: 32px; }
.nav-actions { display: flex; align-items: center; gap: 0.5rem; }
.nav-link {
    display: flex; align-items: center; gap: 0.5rem;
    font-weight: 600; font-size: 0.875rem; color: var(--text-muted);
}
.nav-link:hover { color: var(--primary); }
.mobile-only { display: none !important; }
.hide-on-mobile { display: block !important; }

@media (max-width: 768px) {
    .mobile-only { display: flex !important; }
    .hide-on-mobile { display: none !important; }
    .nav-actions {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-card);
        border-bottom: 1px solid var(--border-color);
        padding: 1rem;
        box-shadow: var(--shadow-sm);
        gap: 0.5rem;
        z-index: 40;
    }
    .nav-actions.active {
        display: flex;
    }
    .nav-link {
        width: 100%;
        padding: 0.75rem 1rem !important;
        border-radius: var(--radius-md);
        background: var(--bg-surface);
    }
    .nav-link:hover {
        background: var(--border-color);
    }
}

.btn-icon {
    display: flex; align-items: center; justify-content: center;
    width: 2.5rem; height: 2.5rem; border-radius: var(--radius-md);
    background: transparent; border: none; cursor: pointer;
    color: var(--text-muted); transition: all var(--transition-fast);
}
.btn-icon:hover { background: var(--border-color); color: var(--text-main); }

/* Card (Glassmorphism) */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-glass);
    overflow: hidden;
    transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.card-header { padding: 1.5rem 1.5rem 1rem; border-bottom: 1px solid var(--border-color); }
.card-body { padding: 1.5rem; }
.card-title { font-size: 1.25rem; font-weight: 700; margin: 0; }
.card-subtitle { font-size: 0.875rem; color: var(--text-muted); margin-top: 0.25rem; }

/* Calendar Components */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background-color: var(--border-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}
.calendar-day-header {
    background-color: var(--bg-surface);
    padding: 1rem 0.5rem;
    text-align: center;
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}
.calendar-day-header.is-sunday { color: var(--holiday-color); }

.calendar-cell {
    background-color: var(--bg-card);
    padding: 1.5rem 0.5rem;
    text-align: center;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 5rem;
    transition: background-color var(--transition-fast);
}
.calendar-cell:hover { background-color: var(--primary-light); cursor: pointer; }
.calendar-date { font-size: 1.25rem; font-weight: 700; color: var(--text-main); }
.calendar-cell.is-holiday .calendar-date { color: var(--holiday-color); font-weight: 800; }
.calendar-cell.is-cuti .calendar-date { color: var(--cuti-color); font-weight: 800; }

.calendar-cell.is-today::after {
    content: ""; position: absolute;
    top: 0.5rem; right: 0.5rem;
    width: 0.5rem; height: 0.5rem;
    background-color: var(--primary);
    border-radius: var(--radius-full);
    box-shadow: 0 0 10px var(--primary);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(79, 70, 229, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(79, 70, 229, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(79, 70, 229, 0); }
}

.calendar-empty {
    background-color: var(--bg-surface);
    color: var(--text-muted);
    display: flex; align-items: center; justify-content: center;
    font-size: 0.875rem;
    opacity: 0.5;
}

/* Badges */
.badge-group { display: flex; flex-direction: column; gap: 1rem; margin-top: 1.5rem; }
@media (min-width: 768px) { .badge-group { flex-direction: row; } }
.badge {
    flex: 1; padding: 1.25rem; border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}
.badge.is-holiday { background-color: var(--holiday-bg); border-color: var(--holiday-border); }
.badge.is-cuti { background-color: var(--cuti-bg); border-color: var(--cuti-border); }
.badge-title {
    font-size: 0.875rem; font-weight: 700; text-transform: uppercase;
    display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.75rem;
}
.badge.is-holiday .badge-title { color: var(--holiday-color); }
.badge.is-cuti .badge-title { color: var(--cuti-color); }
.badge-list { list-style: none; padding: 0; margin: 0; }
.badge-list li {
    display: flex; align-items: flex-start; gap: 1rem;
    font-size: 0.875rem; margin-bottom: 0.5rem;
}
.badge-list .date { font-weight: 800; min-width: 2rem; text-align: right; }
.badge.is-holiday .date { color: var(--holiday-color); }
.badge.is-cuti .date { color: var(--cuti-color); }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    gap: 0.5rem; padding: 0.75rem 1.5rem;
    font-size: 0.875rem; font-weight: 600;
    border-radius: var(--radius-md);
    border: none; cursor: pointer;
    transition: all var(--transition-fast);
}
.btn-primary {
    background-color: var(--primary); color: #fff;
    box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background-color: var(--primary-hover); transform: translateY(-2px); box-shadow: var(--shadow-hover); }

.btn-outline {
    background-color: transparent; border: 2px solid var(--border-color); color: var(--text-main);
}
.btn-outline:hover { border-color: var(--text-muted); }

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-card);
    padding: 4rem 0 2rem;
    margin-top: auto;
}
.footer-grid { display: grid; gap: 3rem; grid-template-columns: 1fr; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: repeat(3, 1fr); } }
.footer-title { font-size: 1rem; font-weight: 700; margin-bottom: 1.5rem; color: var(--text-main); }
.footer-link { display: block; margin-bottom: 0.75rem; color: var(--text-muted); font-size: 0.875rem; transition: color var(--transition-fast); }
.footer-link:hover { color: var(--primary); }
.footer-bottom {
    border-top: 1px solid var(--border-color);
    margin-top: 4rem; padding-top: 2rem;
    text-align: center; color: var(--text-muted); font-size: 0.875rem;
}

/* Articles / Prose */
.article-content { max-width: 65ch; margin: 0 auto; font-size: 1rem; line-height: 1.8; }
.article-content p { margin-bottom: 1.5em; }
.article-content h2 { font-size: 1.5em; margin-top: 2em; margin-bottom: 1em; }
.article-content h3 { font-size: 1.25em; margin-top: 1.5em; margin-bottom: 0.75em; }
.article-content ul { list-style-type: disc; padding-left: 1.5em; margin-bottom: 1.5em; }
.article-content strong { color: var(--text-main); font-weight: 700; }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.375rem;
}
.form-input, .form-select {
    width: 100%;
    padding: 0.625rem 1rem;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--text-main);
    background-color: var(--bg-surface);
    background-clip: padding-box;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-input:focus, .form-select:focus {
    border-color: var(--primary);
    outline: 0;
    box-shadow: 0 0 0 0.2rem var(--primary-light);
}

/* Utilities */
.hidden { display: none !important; }