/* ============================================
   iConnectHR - Design System
   Modern, clean, responsive CSS
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ---- CSS Variables ---- */
:root {
    --color-bg: #0f1117;
    --color-surface: #1a1d27;
    --color-surface-hover: #22263a;
    --color-border: #2a2e3f;
    --color-text: #e4e6f0;
    --color-text-muted: #8b8fa3;
    --color-primary: #6366f1;
    --color-primary-hover: #818cf8;
    --color-primary-glow: rgba(99, 102, 241, 0.25);
    --color-success: #22c55e;
    --color-success-bg: rgba(34, 197, 94, 0.12);
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.12);
    --color-danger: #ef4444;
    --color-danger-bg: rgba(239, 68, 68, 0.12);
    --color-info: #3b82f6;
    --color-info-bg: rgba(59, 130, 246, 0.12);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px var(--color-primary-glow);
    --transition: 0.2s ease;
    --sidebar-width: 260px;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

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

html {
    font-size: 15px;
    scroll-behavior: smooth;
}

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

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

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

/* ---- Layout ---- */
.app-layout {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    min-height: 100vh;
}

.sidebar {
    background: var(--color-surface);
    border-right: 1px solid var(--color-border);
    padding: 2rem 0;
    display: flex;
    flex-direction: column;
    position: fixed;
    width: var(--sidebar-width);
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
}

.sidebar-brand {
    padding: 0 1.5rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 1rem;
}

.sidebar-brand h1 {
    font-size: 1.35rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.sidebar-brand small {
    display: block;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    margin-top: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav {
    flex: 1;
    padding: 0.5rem 0;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.7rem 1.5rem;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    transition: all var(--transition);
    border-left: 3px solid transparent;
}

.sidebar-nav a:hover {
    color: var(--color-text);
    background: var(--color-surface-hover);
}

.sidebar-nav a.active {
    color: var(--color-primary);
    background: var(--color-primary-glow);
    border-left-color: var(--color-primary);
}

.sidebar-nav .nav-icon {
    font-size: 1.15rem;
    width: 22px;
    text-align: center;
}

.sidebar-nav a.logout-nav-link:hover {
    color: var(--color-danger);
    background: var(--color-danger-bg);
}

.sidebar-nav .nav-section {
    padding: 1.25rem 1.5rem 0.5rem;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--color-text-muted);
    font-weight: 600;
}

.sidebar-user {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.sidebar-user .avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), #a78bfa);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    color: #fff;
    flex-shrink: 0;
}

.sidebar-user .user-info {
    overflow: hidden;
}

.sidebar-user .user-info .user-name {
    font-weight: 600;
    font-size: 0.85rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user .user-info .user-role {
    font-size: 0.72rem;
    color: var(--color-text-muted);
    text-transform: capitalize;
}

.main-content {
    grid-column: 2;
    padding: 2rem 2.5rem;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
}

/* ---- Page Header ---- */
.page-header {
    margin-bottom: 2rem;
}

.page-header h2 {
    font-size: 1.65rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.page-header p {
    color: var(--color-text-muted);
    margin-top: 0.25rem;
    font-size: 0.9rem;
}

/* ---- Cards ---- */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.card:hover {
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.card-header h3 {
    font-size: 1.05rem;
    font-weight: 600;
}

/* ---- Stat Cards ---- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.25rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform var(--transition), box-shadow var(--transition);
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.stat-icon.annual { background: var(--color-info-bg); color: var(--color-info); }
.stat-icon.sick { background: var(--color-warning-bg); color: var(--color-warning); }
.stat-icon.unpaid { background: var(--color-danger-bg); color: var(--color-danger); }
.stat-icon.total { background: var(--color-primary-glow); color: var(--color-primary); }
.stat-icon.wfh { background: rgba(139, 92, 246, 0.12); color: #8b5cf6; }

.stat-info .stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.2;
}

.stat-info .stat-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ---- Table ---- */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-md);
    background: rgba(0, 0, 0, 0.1);
    border: 1px solid var(--color-border);
    margin: 0.5rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead th {
    text-align: left;
    padding: 0.85rem 1rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
    font-weight: 600;
    white-space: nowrap;
}

tbody td {
    padding: 0.85rem 1rem;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

tbody tr {
    transition: background var(--transition);
}

tbody tr:hover {
    background: rgba(99, 102, 241, 0.05);
}

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

/* ---- Calendar Grid (Custom) ---- */
.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.calendar-day-name {
    background: var(--color-surface);
    padding: 0.75rem;
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.calendar-cell {
    background: var(--color-surface);
    min-height: 85px;
    padding: 0.6rem;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.calendar-cell.empty {
    background: rgba(0,0,0,0.1);
}

.calendar-cell.today {
    background: var(--color-primary-glow);
}

.calendar-cell.today .calendar-date {
    background: var(--color-primary);
    color: white;
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 600;
}

.calendar-date {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.calendar-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-top: 0.4rem;
}

.calendar-cell.has-leave {
    background: var(--color-surface-hover);
}

/* ---- Badges ---- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.7rem;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.badge-pending {
    background: var(--color-warning-bg);
    color: var(--color-warning);
}

.badge-manager_approved {
    background: var(--color-info-bg);
    color: var(--color-info);
}

.badge-hr_approved {
    background: var(--color-success-bg);
    color: var(--color-success);
}

.badge-rejected {
    background: var(--color-danger-bg);
    color: var(--color-danger);
}

.badge-role {
    background: var(--color-primary-glow);
    color: var(--color-primary);
}

/* Specific attendance badges */
.badge-present { background: var(--color-success-bg); color: var(--color-success); }
.badge-wfh { background: rgba(139, 92, 246, 0.12); color: #a78bfa; }
.badge-on-leave { background: var(--color-info-bg); color: var(--color-info); }
.badge-absent { background: var(--color-danger-bg); color: var(--color-danger); }

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-success {
    background: var(--color-success);
    color: #fff;
}
.btn-success:hover {
    background: #16a34a;
    box-shadow: 0 0 15px rgba(34, 197, 94, 0.3);
    color: #fff;
}

.btn-danger {
    background: var(--color-danger);
    color: #fff;
}
.btn-danger:hover {
    background: #dc2626;
    box-shadow: 0 0 15px rgba(239, 68, 68, 0.3);
    color: #fff;
}

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

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.78rem;
}

.btn-group {
    display: flex;
    gap: 0.5rem;
}

/* ---- Forms ---- */
.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.4rem;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control {
    width: 100%;
    padding: 0.65rem 0.9rem;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: var(--font);
    font-size: 0.9rem;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}

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

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b8fa3' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

/* ---- Alerts / Flash Messages ---- */
.alert {
    padding: 0.85rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.25rem;
    font-size: 0.88rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: slideDown 0.3s ease;
}

.alert-success {
    background: var(--color-success-bg);
    color: var(--color-success);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.alert-error {
    background: var(--color-danger-bg);
    color: var(--color-danger);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.alert-info {
    background: var(--color-info-bg);
    color: var(--color-info);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ---- Login Page ---- */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
    background: var(--color-bg);
    background-image:
        radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(167, 139, 250, 0.06) 0%, transparent 50%);
}

.login-card {
    width: 100%;
    max-width: 420px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    box-shadow: var(--shadow-card);
}

.login-card .login-logo {
    text-align: center;
    margin-bottom: 1.75rem;
}

.login-card .login-logo h1 {
    font-size: 1.65rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-primary), #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-card .login-logo p {
    color: var(--color-text-muted);
    font-size: 0.88rem;
    margin-top: 0.35rem;
}

.login-card .btn-primary {
    width: 100%;
    padding: 0.75rem;
    font-size: 0.95rem;
    margin-top: 0.5rem;
}

/* ---- Modal Overlay ---- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    width: 100%;
    max-width: 540px;
    box-shadow: var(--shadow-card);
    animation: modalIn 0.25s ease;
}

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--color-border);
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    padding: 0;
}

.modal-close:hover {
    color: var(--color-danger);
}

/* ---- Empty State ---- */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--color-text-muted);
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.4;
}

.empty-state p {
    font-size: 0.95rem;
}

/* ---- Accordion / Collapsible ---- */
.accordion-card {
    padding: 0;
    overflow: hidden;
}

.accordion-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: background var(--transition);
    user-select: none;
}

.accordion-header:hover {
    background: var(--color-surface-hover);
}

.accordion-title {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.accordion-arrow {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    transition: transform 0.2s ease;
    margin-right: 0.4rem;
    display: inline-block;
    width: 14px;
}

.accordion-open .accordion-header {
    border-bottom: 1px solid var(--color-border);
}

.accordion-body {
    padding: 1.25rem 1.5rem;
    animation: accordionIn 0.2s ease;
}

@keyframes accordionIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.accordion-summary {
    display: flex;
    gap: 0.25rem;
    flex-wrap: wrap;
}

/* ---- Utility ---- */
.text-muted { color: var(--color-text-muted); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-center { text-align: center; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-2 { margin-bottom: 1rem; }

/* ---- Responsive ---- */
@media (max-width: 768px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        left: -100%;
        transition: left 0.3s ease;
        z-index: 200;
    }

    .sidebar.open {
        left: 0;
    }

    .main-content {
        margin-left: 0;
        padding: 1.25rem;
    }

    .mobile-toggle {
        display: flex !important;
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

.mobile-toggle {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 300;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text);
    font-size: 1.2rem;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

/* ---- Sidebar overlay for mobile ---- */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 150;
}

.sidebar-overlay.active {
    display: block;
}

/* ---- Toast Notifications ---- */
.toast-container {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    pointer-events: none;
}

.toast {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 1rem 1.25rem;
    min-width: 300px;
    max-width: 450px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    pointer-events: auto;
    animation: toastIn 0.35s cubic-bezier(0.68, -0.55, 0.265, 1.55) forwards;
    position: relative;
    overflow: hidden;
}

@keyframes toastIn {
    from { transform: translateX(100%) scale(0.9); opacity: 0; }
    to { transform: translateX(0) scale(1); opacity: 1; }
}

.toast-out {
    animation: toastOut 0.3s ease forwards;
}

@keyframes toastOut {
    to { transform: translateX(100%); opacity: 0; }
}

.toast::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
}

.toast-success::before { background: var(--color-success); }
.toast-error::before   { background: var(--color-danger); }
.toast-warning::before { background: var(--color-warning); }
.toast-info::before    { background: var(--color-info); }

.toast-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.toast-message {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text);
}

.toast-close {
    margin-left: auto;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--color-text-muted);
    opacity: 0.5;
    transition: opacity var(--transition);
}

.toast-close:hover { opacity: 1; }

/* ---- Modals ---- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}

.modal-overlay.active { display: flex; }

.modal {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    animation: modalIn 0.3s ease;
}

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

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-body { padding: 1.5rem; }
.modal-footer {
    padding: 1.25rem 1.5rem;
    border-top: 1px solid var(--color-border);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}