@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');
:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-light: rgba(99, 102, 241, 0.12);
    --primary-glow: rgba(99, 102, 241, 0.4);
    --gradient-primary: linear-gradient(135deg, #6366f1, #8b5cf6);
    --gradient-warm: linear-gradient(135deg, #f59e0b, #ef4444);
    --gradient-cool: linear-gradient(135deg, #06b6d4, #6366f1);
    --gradient-hero: linear-gradient(135deg, #1e1b4b 0%, #312e81 30%, #4338ca 60%, #6366f1 100%);

    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.12);
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.12);
    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.12);
    --info: #06b6d4;
    --info-light: rgba(6, 182, 212, 0.12);
    --purple: #8b5cf6;
    --purple-light: rgba(139, 92, 246, 0.12);

    --bg: #f1f5f9;
    --bg-card: rgba(255, 255, 255, 0.8);
    --bg-card-solid: #ffffff;
    --bg-sidebar: #1e1b4b;
    --bg-input: #f1f5f9;
    --bg-hover: rgba(99, 102, 241, 0.06);

    --text: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;
    --text-inverse: #f8fafc;

    --border: #e2e8f0;
    --border-light: #f1f5f9;

    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-blur: 16px;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow: 0 4px 16px rgba(0, 0, 0, 0.06), 0 1px 4px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08), 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.1), 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-primary: 0 8px 24px rgba(99, 102, 241, 0.25);
    --shadow-success: 0 8px 24px rgba(16, 185, 129, 0.2);

    --radius-sm: 8px;
    --radius: 10px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;

    --ease: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
    --transition-fast: all 0.15s var(--ease);
    --transition: all 0.3s var(--ease);
    --transition-slow: all 0.5s var(--ease);
}

[data-theme="dark"] {
    --bg: #0c0a1d;
    --bg-card: rgba(30, 27, 75, 0.6);
    --bg-card-solid: #1e1b4b;
    --bg-sidebar: #0c0a1d;
    --bg-input: rgba(99, 102, 241, 0.1);
    --bg-hover: rgba(99, 102, 241, 0.12);

    --text: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-inverse: #0c0a1d;

    --border: rgba(99, 102, 241, 0.15);
    --border-light: rgba(99, 102, 241, 0.08);

    --glass-bg: rgba(30, 27, 75, 0.6);
    --glass-border: rgba(99, 102, 241, 0.15);

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition-fast); }
a:hover { color: var(--primary-hover); }

code {
    font-family: var(--font-mono);
    background: var(--primary-light);
    color: var(--primary);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.82em;
    font-weight: 500;
}

.text-muted { color: var(--text-muted); font-size: 0.85em; }
h1, h2, h3, h4 { font-weight: 700; line-height: 1.3; color: var(--text); }
h1 { font-size: 2rem; letter-spacing: -0.02em; }
h2 { font-size: 1.5rem; letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }

.card {
    background: var(--bg-card);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover { box-shadow: var(--shadow); }

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-light);
}

.card-header h3 { font-weight: 600; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border: none;
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-primary);
}
.btn-primary:hover { box-shadow: 0 12px 32px rgba(99, 102, 241, 0.35); transform: translateY(-1px); }

.btn-success {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    box-shadow: var(--shadow-success);
}
.btn-success:hover { box-shadow: 0 12px 32px rgba(16, 185, 129, 0.3); transform: translateY(-1px); }

.btn-danger {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    box-shadow: 0 8px 24px rgba(239, 68, 68, 0.2);
}
.btn-danger:hover { box-shadow: 0 12px 32px rgba(239, 68, 68, 0.3); transform: translateY(-1px); }

.btn-warning {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: white;
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text);
    border: 1px solid var(--border);
    backdrop-filter: blur(8px);
}
.btn-secondary:hover { background: var(--bg-hover); border-color: var(--primary); color: var(--primary); }

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    padding: 8px 12px;
    border-radius: var(--radius);
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--primary); }

.btn-sm { padding: 7px 14px; font-size: 0.8rem; border-radius: var(--radius-sm); }
.btn-lg { padding: 14px 32px; font-size: 1rem; border-radius: var(--radius-md); }
.btn-block { display: flex; width: 100%; }
.btn-icon { width: 40px; height: 40px; padding: 0; border-radius: var(--radius); }

.input {
    width: 100%;
    padding: 11px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    background: var(--bg-card-solid);
    color: var(--text);
    transition: var(--transition);
}

.input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.input::placeholder { color: var(--text-muted); }

select.input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
}

.form-group { margin-bottom: 18px; }
.form-group label {
    display: block;
    margin-bottom: 7px;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: 0.88rem;
}

.data-table thead th {
    padding: 14px 16px;
    text-align: left;
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 2px solid var(--border);
    background: var(--bg);
    position: sticky;
    top: 0;
    z-index: 5;
}

.data-table tbody td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border-light);
    vertical-align: middle;
    transition: var(--transition-fast);
}

.data-table tbody tr:hover td { background: var(--bg-hover); }
.data-table tbody tr:last-child td { border-bottom: none; }

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: var(--radius-full);
    font-size: 0.76rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.status-badge::before {
    content: '';
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
}

.status-present { background: var(--success-light); color: var(--success); }
.status-present::before { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-absent { background: var(--danger-light); color: var(--danger); }
.status-absent::before { background: var(--danger); box-shadow: 0 0 6px var(--danger); }
.status-late { background: var(--warning-light); color: var(--warning); }
.status-late::before { background: var(--warning); box-shadow: 0 0 6px var(--warning); }
.status-halfday { background: var(--purple-light); color: var(--purple); }
.status-halfday::before { background: var(--purple); box-shadow: 0 0 6px var(--purple); }
.status-leave { background: var(--info-light); color: var(--info); }
.status-leave::before { background: var(--info); box-shadow: 0 0 6px var(--info); }

.progress-bar-container {
    width: 100%;
    height: 26px;
    background: var(--bg-input);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.72rem;
    font-weight: 700;
    color: white;
    transition: width 0.6s var(--ease);
    min-width: 44px;
}

.action-btns { display: flex; gap: 6px; }

.toast {
    position: fixed;
    top: 24px;
    right: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 22px;
    border-radius: var(--radius-md);
    background: var(--bg-card-solid);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    z-index: 10000;
    transform: translateX(130%);
    transition: transform 0.4s var(--ease-bounce);
    max-width: 400px;
    font-size: 0.88rem;
    font-weight: 500;
    backdrop-filter: blur(16px);
}

.toast-show { transform: translateX(0); }

.toast-success { border-left: 4px solid var(--success); }
.toast-error { border-left: 4px solid var(--danger); }
.toast-warning { border-left: 4px solid var(--warning); }
.toast-info { border-left: 4px solid var(--primary); }

.toast-icon { font-size: 1.3rem; flex-shrink: 0; }
.toast-success .toast-icon { color: var(--success); }
.toast-error .toast-icon { color: var(--danger); }
.toast-warning .toast-icon { color: var(--warning); }
.toast-info .toast-icon { color: var(--primary); }

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(8px);
    z-index: 9000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-active { display: flex; }

.modal-content {
    background: var(--bg-card-solid);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalIn 0.3s var(--ease-bounce);
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(10px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    padding: 22px 28px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 { font-weight: 700; }

.modal-body { padding: 28px; }
.modal-footer {
    padding: 18px 28px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.empty-state {
    text-align: center;
    padding: 56px 24px;
    color: var(--text-muted);
}

.empty-state svg { margin-bottom: 16px; opacity: 0.3; }
.empty-state p { font-size: 0.95rem; font-weight: 500; }

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px;
    gap: 16px;
    color: var(--text-muted);
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 28px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text);
    letter-spacing: -0.02em;
}

.navbar-brand .logo {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 800;
    font-size: 1.1rem;
    box-shadow: var(--shadow-primary);
}

.navbar-actions { display: flex; align-items: center; gap: 8px; }

.table-wrapper { overflow-x: auto; border-radius: var(--radius); }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.filters-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; }
.filters-bar .input { width: auto; min-width: 160px; }

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
    body { font-size: 15px; }
    .card { padding: 18px; }
    .navbar { padding: 12px 16px; }
    .filters-bar { flex-direction: column; }
    .filters-bar .input { width: 100%; }
    .data-table { font-size: 0.82rem; }
    .data-table thead th, .data-table tbody td { padding: 10px 12px; }
    .action-btns { flex-direction: column; }
    h1 { font-size: 1.6rem; }
}

@media (max-width: 480px) { html { font-size: 14px; } }

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-secondary); }

::selection { background: var(--primary-light); color: var(--primary); }