/**
 * TechNexa Solutions - Custom Stylesheet
 * Modern, clean, professional design system
 */

/* ===== CSS Custom Properties ===== */
:root {
    --primary: #4f46e5;
    --primary-light: #6366f1;
    --primary-dark: #4338ca;
    --primary-bg: #eef2ff;
    --secondary: #0ea5e9;
    --success: #10b981;
    --success-bg: #ecfdf5;
    --warning: #f59e0b;
    --warning-bg: #fffbeb;
    --danger: #ef4444;
    --danger-bg: #fef2f2;
    --info: #06b6d4;
    --info-bg: #ecfeff;

    --gray-50: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e1;
    --gray-400: #94a3b8;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1e293b;
    --gray-900: #0f172a;

    --bg: #f1f5f9;
    --surface: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;

    --sidebar-width: 260px;
    --topbar-height: 64px;
    --bottom-nav-height: 64px;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.06);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ===== Base Styles ===== */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 0;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ===== Preloader ===== */
#preloader {
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #2563eb 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.loaded {
    opacity: 0;
    visibility: hidden;
}

.preloader-inner {
    text-align: center;
}

.preloader-logo {
    width: 72px;
    height: 72px;
    margin: 0 auto 16px;
    background: rgba(255,255,255,0.15);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: preloaderPulse 1.5s ease-in-out infinite;
}

.preloader-logo i {
    font-size: 36px;
    color: #fff;
}

.preloader-text {
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.preloader-bar {
    width: 200px;
    height: 4px;
    background: rgba(255,255,255,0.2);
    border-radius: 4px;
    overflow: hidden;
    margin: 0 auto;
}

.preloader-bar-inner {
    height: 100%;
    width: 40%;
    background: #fff;
    border-radius: 4px;
    animation: preloaderBar 1.2s ease-in-out infinite;
}

@keyframes preloaderPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.08); }
}

@keyframes preloaderBar {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(350%); }
}

/* ===== Top Navbar ===== */
.top-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--topbar-height);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-toggle {
    background: none;
    border: none;
    font-size: 20px;
    color: var(--gray-600);
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.sidebar-toggle:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-icon {
    font-size: 24px;
    color: var(--primary);
}

.brand-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--gray-800);
    letter-spacing: -0.3px;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-profile-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    border-radius: 50px;
    text-decoration: none;
    color: var(--gray-700);
    transition: var(--transition);
}

.nav-profile-btn:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.nav-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-bg);
}

.nav-username {
    font-size: 14px;
    font-weight: 500;
}

/* ===== Sidebar ===== */
.sidebar {
    position: fixed;
    top: var(--topbar-height);
    left: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--surface);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    z-index: 999;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 20px 16px;
    border-bottom: 1px solid var(--border);
}

.sidebar-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-avatar {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    object-fit: cover;
}

.sidebar-user-name {
    font-size: 14px;
    font-weight: 600;
    margin: 0;
    color: var(--gray-800);
}

.sidebar-user-role {
    font-size: 12px;
    color: var(--primary);
    font-weight: 500;
    background: var(--primary-bg);
    padding: 2px 8px;
    border-radius: 20px;
    display: inline-block;
}

.sidebar-nav { padding: 12px 0; }

.nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-menu-item a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 11px 20px;
    color: var(--gray-600);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    border-left: 3px solid transparent;
    margin: 2px 0;
}

.nav-menu-item a i {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

.nav-menu-item a:hover {
    background: var(--primary-bg);
    color: var(--primary);
    border-left-color: var(--primary-light);
}

.nav-menu-item.active a {
    background: var(--primary-bg);
    color: var(--primary);
    border-left-color: var(--primary);
    font-weight: 600;
}

.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 998;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.sidebar-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* ===== Main Content ===== */
.main-content {
    margin-left: var(--sidebar-width);
    margin-top: var(--topbar-height);
    min-height: calc(100vh - var(--topbar-height));
    transition: margin-left 0.3s ease;
}

.content-wrapper {
    padding: 24px;
    max-width: 1400px;
    margin: 0 auto;
}

/* ===== Page Header ===== */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 24px;
}

.page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0;
}

.page-subtitle {
    font-size: 14px;
    color: var(--text-muted);
    margin: 2px 0 0;
}

/* ===== Dashboard Cards ===== */
.stat-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.stat-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.stat-card.primary::after { background: linear-gradient(90deg, var(--primary), var(--primary-light)); }
.stat-card.success::after { background: linear-gradient(90deg, var(--success), #34d399); }
.stat-card.warning::after { background: linear-gradient(90deg, var(--warning), #fbbf24); }
.stat-card.danger::after { background: linear-gradient(90deg, var(--danger), #f87171); }
.stat-card.info::after { background: linear-gradient(90deg, var(--info), #22d3ee); }
.stat-card.secondary::after { background: linear-gradient(90deg, var(--secondary), #38bdf8); }

.stat-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.stat-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.stat-card.primary .stat-card-icon { background: var(--primary-bg); color: var(--primary); }
.stat-card.success .stat-card-icon { background: var(--success-bg); color: var(--success); }
.stat-card.warning .stat-card-icon { background: var(--warning-bg); color: var(--warning); }
.stat-card.danger .stat-card-icon { background: var(--danger-bg); color: var(--danger); }
.stat-card.info .stat-card-icon { background: var(--info-bg); color: var(--info); }
.stat-card.secondary .stat-card-icon { background: #f0f9ff; color: var(--secondary); }

.stat-card-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-800);
    line-height: 1.2;
}

.stat-card-label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 4px;
}

/* ===== Cards & Panels ===== */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-header {
    background: transparent;
    border-bottom: 1px solid var(--border);
    padding: 16px 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-body { padding: 20px; }

/* ===== Tables ===== */
.table-responsive {
    border-radius: var(--radius-sm);
    overflow-x: auto;
}

.table {
    margin-bottom: 0;
    font-size: 14px;
}

.table thead th {
    background: var(--gray-50);
    color: var(--gray-600);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 16px;
    border-bottom: 2px solid var(--border);
    white-space: nowrap;
}

.table tbody td {
    padding: 12px 16px;
    vertical-align: middle;
    border-bottom: 1px solid var(--gray-100);
    color: var(--gray-700);
}

.table tbody tr:hover {
    background: var(--gray-50);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

/* ===== Badges ===== */
.badge-status {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3px;
    display: inline-block;
}

.badge-present { background: var(--success-bg); color: var(--success); }
.badge-absent { background: var(--danger-bg); color: var(--danger); }
.badge-leave { background: var(--warning-bg); color: var(--warning); }
.badge-half { background: var(--info-bg); color: var(--info); }
.badge-pending { background: var(--warning-bg); color: var(--warning); }
.badge-approved { background: var(--success-bg); color: var(--success); }
.badge-rejected { background: var(--danger-bg); color: var(--danger); }
.badge-active { background: var(--success-bg); color: var(--success); }
.badge-inactive { background: var(--gray-100); color: var(--gray-500); }

.badge-priority-low { background: #f0fdf4; color: #16a34a; }
.badge-priority-medium { background: #fefce8; color: #ca8a04; }
.badge-priority-high { background: #fff7ed; color: #ea580c; }
.badge-priority-urgent { background: var(--danger-bg); color: var(--danger); }

/* ===== Buttons ===== */
.btn {
    font-family: var(--font);
    font-weight: 500;
    font-size: 14px;
    border-radius: var(--radius-sm);
    padding: 8px 18px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

.btn-success { background: var(--success); border-color: var(--success); color: #fff; }
.btn-success:hover { background: #059669; border-color: #059669; transform: translateY(-1px); }

.btn-warning { background: var(--warning); border-color: var(--warning); color: #fff; }
.btn-warning:hover { background: #d97706; border-color: #d97706; }

.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover { background: #dc2626; border-color: #dc2626; }

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

.btn-sm {
    padding: 5px 12px;
    font-size: 13px;
}

.btn-lg {
    padding: 12px 28px;
    font-size: 16px;
}

/* ===== Quick Action Buttons ===== */
.quick-action {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--gray-700);
    transition: var(--transition);
    text-align: center;
    cursor: pointer;
}

.quick-action:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    color: var(--primary);
    border-color: var(--primary-light);
}

.quick-action i {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    background: var(--primary-bg);
    color: var(--primary);
}

.quick-action span {
    font-size: 12px;
    font-weight: 600;
}

/* ===== Forms ===== */
.form-control, .form-select {
    font-family: var(--font);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 14px;
    transition: var(--transition);
    color: var(--text);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

.form-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.input-group-text {
    background: var(--gray-50);
    border-color: var(--border);
    color: var(--gray-500);
}

/* ===== Login Page ===== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
    position: relative;
    overflow: hidden;
}

.login-page::before {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: rgba(255,255,255,0.08);
    border-radius: 50%;
    top: -100px;
    right: -100px;
}

.login-page::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: rgba(255,255,255,0.06);
    border-radius: 50%;
    bottom: -80px;
    left: -80px;
}

.login-card {
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    position: relative;
    z-index: 1;
    animation: loginSlideUp 0.6s ease;
}

@keyframes loginSlideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.login-logo {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
    borderradius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    border-radius: 16px;
}

.login-logo i {
    font-size: 28px;
    color: #fff;
}

.login-title {
    text-align: center;
    font-size: 22px;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 4px;
}

.login-subtitle {
    text-align: center;
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 28px;
}

.login-card .form-control {
    padding: 12px 14px;
    background: var(--gray-50);
}

.login-card .btn-primary {
    width: 100%;
    padding: 12px;
    font-size: 15px;
    font-weight: 600;
    background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 100%);
    border: none;
}

.login-card .btn-primary:hover {
    opacity: 0.92;
    transform: translateY(-1px);
    box-shadow: 0 8px 24px rgba(79, 70, 229, 0.35);
}

.role-toggle {
    display: flex;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    padding: 4px;
    margin-bottom: 24px;
}

.role-toggle label {
    flex: 1;
    text-align: center;
    padding: 10px;
    cursor: pointer;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-500);
    transition: var(--transition);
}

.role-toggle input { display: none; }

.role-toggle input:checked + label {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.3);
}

/* ===== Bottom Navigation ===== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-height);
    background: var(--surface);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-around;
    z-index: 1000;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    text-decoration: none;
    color: var(--gray-400);
    font-size: 10px;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.bottom-nav-item i { font-size: 18px; }

.bottom-nav-item.active {
    color: var(--primary);
}

.bottom-nav-item:hover {
    color: var(--primary);
}

/* ===== 404 Page ===== */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 20px;
}

.error-code {
    font-size: 120px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: 16px;
}

/* ===== Profile Photo ===== */
.profile-photo-wrapper {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto;
}

.profile-photo-wrapper img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--primary-bg);
}

.profile-photo-wrapper .photo-edit-btn {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    border: 2px solid #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 12px;
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 48px;
    color: var(--gray-300);
    margin-bottom: 16px;
}

.empty-state h5 {
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 8px;
}

/* ===== Punch Button ===== */
.punch-btn {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: none;
    color: #fff;
    font-weight: 700;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 8px 24px rgba(0,0,0,0.15);
    margin: 0 auto;
}

.punch-btn i { font-size: 32px; margin-bottom: 6px; }

.punch-btn.punch-in {
    background: linear-gradient(135deg, var(--success), #34d399);
}
.punch-btn.punch-in:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 32px rgba(16, 185, 129, 0.35);
}

.punch-btn.punch-out {
    background: linear-gradient(135deg, var(--danger), #f87171);
}
.punch-btn.punch-out:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 32px rgba(239, 68, 68, 0.35);
}

.punch-btn.punched {
    background: var(--gray-300);
    cursor: default;
    box-shadow: none;
}
.punch-btn.punched:hover { transform: none; box-shadow: none; }

/* ===== Print Styles ===== */
@media print {
    .top-navbar, .sidebar, .bottom-nav, .sidebar-overlay, .no-print { display: none !important; }
    .main-content { margin: 0 !important; }
    .content-wrapper { padding: 0 !important; }
    .card { box-shadow: none !important; border: 1px solid #ddd !important; }
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
    }
    .content-wrapper {
        padding: 16px;
        padding-bottom: calc(var(--bottom-nav-height) + 16px);
    }
    .page-title { font-size: 20px; }
    .stat-card-value { font-size: 24px; }
}

@media (max-width: 575.98px) {
    .login-card { padding: 28px 20px; }
    .content-wrapper { padding: 12px; padding-bottom: calc(var(--bottom-nav-height) + 12px); }
    .stat-card { padding: 16px; }
    .punch-btn { width: 120px; height: 120px; }
    .punch-btn i { font-size: 26px; }
}

/* ===== Animations ===== */
.fade-in {
    animation: fadeIn 0.4s ease;
}

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

.slide-up {
    animation: slideUp 0.5s ease;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Utilities ===== */
.text-primary { color: var(--primary) !important; }
.bg-primary-light { background: var(--primary-bg) !important; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.fs-13 { font-size: 13px; }
.fs-14 { font-size: 14px; }
.gap-3 { gap: 1rem; }

/* Modal styles */
.modal-header {
    background: var(--gray-50);
    border-bottom: 1px solid var(--border);
}

.modal-content {
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--gray-100); }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }