/* ============================================================
   DTR System - Global Shared Styles
   ============================================================ */

@import url('variables.css');

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

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

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: 400;
    line-height: 1.6;
    color: var(--neutral-800);
    background-color: var(--neutral-50);
    min-height: 100vh;
    overflow-x: hidden;
}

a {
    color: var(--primary-500);
    text-decoration: none;
    transition: color var(--duration-fast) var(--ease-out);
}

a:hover {
    color: var(--primary-700);
}

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

/* ── Typography ── */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.25;
    color: var(--neutral-900);
}

h1 { font-size: var(--text-4xl); letter-spacing: -0.025em; }
h2 { font-size: var(--text-3xl); letter-spacing: -0.02em; }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-md); font-weight: 600; }

.text-muted { color: var(--neutral-500); }
.text-small { font-size: var(--text-sm); }

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: 600;
    line-height: 1.4;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--duration-base) var(--ease-out);
    white-space: nowrap;
    user-select: none;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: hsla(0, 0%, 100%, 0);
    transition: background var(--duration-fast) var(--ease-out);
}

.btn:hover::after {
    background: hsla(0, 0%, 100%, 0.12);
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
    color: var(--neutral-0);
    box-shadow: 0 2px 8px hsla(230, 72%, 50%, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 4px 16px hsla(230, 72%, 50%, 0.4);
    transform: translateY(-1px);
}

.btn-success {
    background: linear-gradient(135deg, var(--success-400), var(--success-600));
    color: var(--neutral-0);
    box-shadow: 0 2px 8px hsla(152, 65%, 40%, 0.3);
}

.btn-success:hover {
    box-shadow: 0 4px 16px hsla(152, 65%, 40%, 0.4);
    transform: translateY(-1px);
}

.btn-danger {
    background: linear-gradient(135deg, var(--danger-400), var(--danger-600));
    color: var(--neutral-0);
    box-shadow: 0 2px 8px hsla(0, 75%, 50%, 0.3);
}

.btn-danger:hover {
    box-shadow: 0 4px 16px hsla(0, 75%, 50%, 0.4);
    transform: translateY(-1px);
}

.btn-warning {
    background: linear-gradient(135deg, var(--warning-400), var(--warning-600));
    color: var(--neutral-0);
    box-shadow: 0 2px 8px hsla(38, 92%, 48%, 0.3);
}

.btn-soft {
    background: var(--neutral-100);
    color: var(--neutral-700);
    border: 1px solid var(--neutral-200);
    box-shadow: none;
}

.btn-soft:hover {
    background: var(--neutral-200);
}

.btn-outline {
    background: transparent;
    color: var(--primary-500);
    border: 1.5px solid var(--primary-300);
}

.btn-outline:hover {
    background: var(--primary-50);
    border-color: var(--primary-500);
}

.btn-ghost {
    background: transparent;
    color: var(--neutral-600);
}

.btn-ghost:hover {
    background: var(--neutral-100);
    color: var(--neutral-800);
}

.btn-lg {
    padding: 14px 32px;
    font-size: var(--text-md);
    border-radius: var(--border-radius-lg);
}

.btn-sm {
    padding: 6px 14px;
    font-size: var(--text-xs);
}

.btn-circle {
    width: 38px;
    min-width: 38px;
    height: 38px;
    padding: 0;
    border-radius: 999px;
    border: 1px solid var(--neutral-200);
    background: var(--neutral-0);
    color: var(--neutral-700);
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.btn-circle:hover {
    background: var(--neutral-100);
    color: var(--neutral-900);
    border-color: var(--neutral-300);
    box-shadow: none;
    transform: translateY(-1px);
}

.btn-circle .icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    line-height: 1;
}

.stat-icon.icon-circle {
    width: 46px;
    height: 46px;
    border-radius: 999px;
    border: 1px solid var(--neutral-200);
    background: var(--neutral-100);
    color: var(--neutral-700);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.6);
}

.stat-icon.icon-circle .icon {
    font-size: 1rem;
    line-height: 1;
}

.action-icon-btn {
    position: relative;
    width: 36px;
    min-width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 999px;
    font-size: var(--text-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    overflow: visible;
}

.action-icon-btn .icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.action-icon-btn .action-label {
    position: absolute;
    left: 100%;
    top: 50%;
    transform: translateY(-50%) translateX(-8px);
    background: var(--neutral-900);
    color: #fff;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    display: none;
    white-space: nowrap;
    pointer-events: none;
    transition: opacity 150ms ease, transform 150ms ease, visibility 150ms ease;
    z-index: 10;
}

.action-icon-btn:hover .action-label,
.action-icon-btn:focus .action-label {
    display: inline-flex;
    opacity: 1;
    visibility: visible;
    transform: translateY(-50%) translateX(0);
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--border-radius-md);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* ── Form Inputs ── */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--neutral-700);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 11px 16px;
    font-family: var(--font-sans);
    font-size: var(--text-base);
    color: var(--neutral-800);
    background: var(--neutral-0);
    border: 1.5px solid var(--neutral-200);
    border-radius: var(--border-radius-md);
    transition: all var(--duration-base) var(--ease-out);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary-400);
    box-shadow: 0 0 0 3px hsla(230, 72%, 50%, 0.12);
}

.form-control::placeholder {
    color: var(--neutral-400);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 34px;
}

/* ── Cards ── */
.card {
    background: var(--neutral-0);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--neutral-200);
    box-shadow: var(--shadow-sm);
    padding: 20px;
    transition: all var(--duration-base) var(--ease-out);
}

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

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

/* ── Badges ── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    font-size: var(--text-xs);
    font-weight: 600;
    line-height: 1.4;
    border-radius: var(--border-radius-full);
    letter-spacing: 0.01em;
}

.badge-early {
    background: var(--info-50);
    color: var(--info-500);
}

.badge-ontime {
    background: var(--success-50);
    color: var(--success-600);
}

.badge-late {
    background: var(--danger-50);
    color: var(--danger-500);
}

.badge-absent {
    background: var(--neutral-100);
    color: var(--neutral-600);
}

.badge-pending {
    background: var(--warning-50);
    color: var(--warning-600);
}

.badge-approved {
    background: var(--success-50);
    color: var(--success-600);
}

.badge-rejected {
    background: var(--danger-50);
    color: var(--danger-500);
}

/* ── Tables ── */
.table-container {
    overflow-x: auto;
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--neutral-200);
    background: var(--neutral-0);
    width: 100%;
    max-width: none;
}

.data-table {
    width: 100%;
    min-width: 100%;
    border-collapse: collapse;
    max-width: none;
}

.data-table thead {
    background: var(--neutral-50);
    border-bottom: 2px solid var(--neutral-200);
}

.data-table th {
    padding: 12px 14px;
    text-align: left;
    font-size: var(--text-xs);
    font-weight: 700;
    color: var(--neutral-500);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    white-space: nowrap;
}

.data-table td {
    padding: 12px 14px;
    font-size: var(--text-sm);
    color: var(--neutral-700);
    border-bottom: 1px solid var(--neutral-100);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: background var(--duration-fast) var(--ease-out);
}

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

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

/* ── Flash Messages / Alerts ── */
.alert {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    border-radius: var(--border-radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: 20px;
    animation: slideDown var(--duration-base) var(--ease-out);
}

.alert-success {
    background: var(--success-50);
    color: var(--success-600);
    border: 1px solid var(--success-100);
}

.alert-danger {
    background: var(--danger-50);
    color: var(--danger-600);
    border: 1px solid var(--danger-100);
}

.alert-warning {
    background: var(--warning-50);
    color: var(--warning-600);
    border: 1px solid var(--warning-100);
}

.alert-info {
    background: var(--primary-50);
    color: var(--primary-600);
    border: 1px solid var(--primary-100);
}

/* ── Modal ── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: hsla(220, 22%, 10%, 0.5);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration-base) var(--ease-out);
    padding: 16px;
    box-sizing: border-box;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
    visibility: visible;
}

.modal-overlay.hidden {
    display: none !important;
}

.modal {
    background: var(--neutral-0);
    border-radius: var(--border-radius-xl);
    box-shadow: var(--shadow-xl);
    width: min(540px, 100%);
    max-width: 540px;
    max-height: min(85vh, 760px);
    overflow: hidden;
    padding: 20px;
    box-sizing: border-box;
    transform: scale(0.92) translateY(20px);
    transition: transform var(--duration-base) var(--ease-spring);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    gap: 12px;
}

.modal-body {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-height: calc(85vh - 120px);
    overflow-y: auto;
    padding-right: 4px;
}

#messageForm {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

#messageForm .form-group {
    margin: 0;
}

#messageForm .modal-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 12px;
    margin-top: 8px;
}

#messageForm .modal-actions .btn {
    min-width: 128px;
    justify-content: center;
}

.modal-title {
    font-size: var(--text-xl);
    font-weight: 700;
}

.modal-close {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: var(--neutral-100);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-size: var(--text-lg);
    color: var(--neutral-500);
    transition: all var(--duration-fast) var(--ease-out);
}

.modal-close:hover {
    background: var(--neutral-200);
    color: var(--neutral-800);
}

/* ── Pagination ── */
.pagination {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
}

.pagination li a,
.pagination li span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    font-size: var(--text-sm);
    font-weight: 500;
    border-radius: var(--border-radius-md);
    color: var(--neutral-600);
    transition: all var(--duration-fast) var(--ease-out);
}

.pagination li a:hover {
    background: var(--primary-50);
    color: var(--primary-600);
}

.pagination li.active span {
    background: var(--primary-500);
    color: var(--neutral-0);
    box-shadow: 0 2px 8px hsla(230, 72%, 50%, 0.3);
}

/* ── Utility Classes ── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-sm { gap: 8px; }
.gap-md { gap: 16px; }
.gap-lg { gap: 20px; }
.mt-sm { margin-top: 8px; }
.mt-md { margin-top: 16px; }
.mt-lg { margin-top: 24px; }
.mb-md { margin-bottom: 16px; }
.w-full { width: 100%; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.hidden { display: none !important; }

/* ── Animations ── */
@keyframes slideDown {
    from { opacity: 0; transform: translateY(-12px); }
    to   { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

/* ── Loading Spinner ── */
.spinner {
    width: 20px;
    height: 20px;
    border: 2.5px solid var(--neutral-200);
    border-top-color: var(--primary-500);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

/* ── Scrollbar Styling ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--neutral-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--neutral-400); }

/* ── Responsive ── */
@media (max-width: 768px) {
    :root {
        --content-padding: 16px;
    }

    .sidebar {
        width: min(280px, 85vw);
    }

    .modal {
        width: 100%;
        max-width: none;
        max-height: 100vh;
        padding: 20px;
        border-radius: 16px;
    }

    .modal-header {
        margin-bottom: 16px;
    }

    #messageForm .modal-actions {
        flex-direction: column-reverse;
        align-items: stretch;
    }

    #messageForm .modal-actions .btn {
        width: 100%;
        min-width: 0;
    }

    .btn {
        white-space: normal;
    }

    h1 { font-size: var(--text-2xl); }
    h2 { font-size: var(--text-xl); }
}