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

:root {
    --sidebar-width: 260px;
    --bg-primary: #f8f9fc;
    --bg-sidebar: #0f172a;
    --bg-card: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-sidebar: #94a3b8;
    --text-sidebar-active: #ffffff;
    --accent: #6366f1;
    --accent-light: #e0e7ff;
    --green: #10b981;
    --green-light: #d1fae5;
    --orange: #f59e0b;
    --orange-light: #fef3c7;
    --red: #ef4444;
    --red-light: #fee2e2;
    --blue: #3b82f6;
    --blue-light: #dbeafe;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ── Sidebar ─────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform 0.3s ease;
}

.sidebar-header {
    padding: 28px 24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #fff;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.logo i {
    font-size: 1.5rem;
    color: var(--accent);
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-sidebar);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-sidebar-active);
}

.nav-item.active {
    background: var(--accent);
    color: #fff;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: 1rem;
}

.sidebar-footer {
    padding: 20px 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.logout-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-sidebar);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.2s ease;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.12);
    color: var(--red);
}

/* ── Main Content ────────────────────────────────────── */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-bar {
    background: var(--bg-card);
    padding: 20px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
}

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

.menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.menu-toggle:hover {
    background: var(--bg-primary);
}

.sidebar-close {
    display: none;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-sidebar);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.sidebar-close:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
}

.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(2px);
    z-index: 99;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.sidebar-backdrop.visible {
    opacity: 1;
    pointer-events: auto;
}

.page-title {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.current-date {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

.content-area {
    padding: 32px;
    flex: 1;
}

/* ── Welcome Section ─────────────────────────────────── */
.welcome-card {
    background: linear-gradient(135deg, var(--accent) 0%, #818cf8 100%);
    border-radius: var(--radius-lg);
    padding: 48px;
    text-align: center;
    color: #fff;
    margin-bottom: 32px;
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.25);
}

.welcome-icon {
    width: 72px;
    height: 72px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2rem;
    backdrop-filter: blur(10px);
}

.welcome-card h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: -0.03em;
}

.welcome-card p {
    font-size: 1rem;
    opacity: 0.85;
    max-width: 480px;
    margin: 0 auto;
    line-height: 1.6;
}

/* ── Stats Grid ──────────────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 18px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.stat-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.stat-icon.blue {
    background: var(--blue-light);
    color: var(--blue);
}

.stat-icon.green {
    background: var(--green-light);
    color: var(--green);
}

.stat-icon.orange {
    background: var(--orange-light);
    color: var(--orange);
}

.stat-icon.red {
    background: var(--red-light);
    color: var(--red);
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -0.03em;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-top: 6px;
}

/* ── Payments Table ──────────────────────────────────── */
.table-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    overflow: visible;
}

.table-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 28px;
    border-bottom: 1px solid var(--border);
}

.table-header h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
}

.table-header h3 i {
    color: var(--accent);
}

.record-count {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-light);
    padding: 6px 14px;
    border-radius: 100px;
}

.table-wrapper {
    overflow: visible;
}

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

thead th {
    background: var(--bg-primary);
    padding: 14px 28px;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

tbody td {
    padding: 18px 28px;
    font-size: 0.9rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border);
}

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

tbody tr {
    transition: background 0.15s ease;
}

tbody tr:hover {
    background: rgba(99, 102, 241, 0.02);
}

.chat-id-badge {
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.85rem;
    font-weight: 500;
    background: var(--bg-primary);
    padding: 5px 12px;
    border-radius: 6px;
    border: 1px solid var(--border);
    color: var(--text-primary);
}

.receipt-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.85rem;
    transition: color 0.2s ease;
}

.receipt-link:hover {
    color: #4f46e5;
    text-decoration: underline;
}

.receipt-link i {
    color: var(--red);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    white-space: nowrap;
}

.status-badge.approved {
    background: var(--green-light);
    color: var(--green);
}

.status-badge.pending {
    background: var(--orange-light);
    color: var(--orange);
}

.status-badge.rejected {
    background: var(--red-light);
    color: var(--red);
}

.status-badge.loading {
    background: var(--bg-primary);
    color: var(--text-secondary);
    pointer-events: none;
}

.status-dropdown {
    position: relative;
    display: inline-block;
}

.status-badge.clickable {
    cursor: pointer;
    border: none;
    font-family: inherit;
    transition: all 0.2s ease;
}

.status-badge.clickable:hover {
    box-shadow: var(--shadow-md);
}

.dropdown-arrow {
    font-size: 0.55rem;
    margin-left: 2px;
    transition: transform 0.2s ease;
}

.status-dropdown.open .dropdown-arrow {
    transform: rotate(180deg);
}

.status-menu {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    z-index: 20;
    min-width: 160px;
    padding: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: all 0.15s ease;
}

.status-dropdown.open .status-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.status-menu form {
    margin: 0;
}

.status-menu-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 9px 14px;
    border: none;
    border-radius: 6px;
    background: none;
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s ease;
}

.status-menu-item.pending {
    color: var(--orange);
}

.status-menu-item.pending:hover {
    background: var(--orange-light);
}

.status-menu-item.approved {
    color: var(--green);
}

.status-menu-item.approved:hover {
    background: var(--green-light);
}

.status-menu-item.rejected {
    color: var(--red);
}

.status-menu-item.rejected:hover {
    background: var(--red-light);
}

.status-form {
    margin: 0;
}

/* ── Pagination ──────────────────────────────────────── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 20px 28px;
    border-top: 1px solid var(--border);
}

.page-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.page-btn:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
    border-color: var(--border);
}

.page-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

.page-dots {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    font-size: 0.82rem;
    color: var(--text-secondary);
}

/* ── Confirmation Modal ──────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease;
}

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

.modal-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 36px;
    max-width: 400px;
    width: 90%;
    text-align: center;
    box-shadow: var(--shadow-lg);
    transform: scale(0.95) translateY(8px);
    transition: transform 0.2s ease;
}

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

.modal-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--green-light);
    color: var(--green);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin: 0 auto 18px;
}

.modal-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.modal-card p {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 28px;
}

.modal-actions {
    display: flex;
    gap: 10px;
    justify-content: center;
}

.modal-btn {
    padding: 10px 24px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.2s ease;
}

.modal-btn.cancel {
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.modal-btn.cancel:hover {
    background: var(--border);
    color: var(--text-primary);
}

.modal-btn.confirm {
    background: var(--green);
    color: #fff;
}

.modal-btn.confirm:hover {
    background: #059669;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.35);
}

.file-id-text {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: 'SF Mono', 'Fira Code', monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
    cursor: default;
}

.file-id-text i {
    color: var(--accent);
}

.date-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* ── Login Page ──────────────────────────────────────── */
.login-body {
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.login-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent) 0%, #818cf8 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 18px;
    font-size: 1.6rem;
    color: #fff;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.3);
}

.login-header h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.login-header p {
    font-size: 0.88rem;
    color: var(--text-secondary);
}

.login-error {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--red-light);
    color: var(--red);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 20px;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--text-primary);
}

.input-wrapper {
    position: relative;
}

.input-wrapper i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.input-wrapper input {
    width: 100%;
    padding: 12px 14px 12px 42px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text-primary);
    background: var(--bg-primary);
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.input-wrapper input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.input-wrapper input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.login-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--accent);
    color: #fff;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-top: 4px;
}

.login-btn:hover {
    background: #4f46e5;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }

    .sidebar-close {
        display: flex;
    }

    .sidebar-backdrop {
        display: block;
    }

    .menu-toggle {
        display: flex;
    }

    .main-content {
        margin-left: 0;
    }

    .content-area {
        padding: 20px;
    }

    .welcome-card {
        padding: 32px 24px;
    }

    .welcome-card h2 {
        font-size: 1.5rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .stat-card {
        padding: 16px;
    }

    .top-bar {
        padding: 16px 20px;
    }

    .table-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
        padding: 20px;
    }

    /* Card-style stacked rows */
    table, thead, tbody, th, td, tr {
        display: block;
    }

    thead {
        position: absolute;
        width: 1px;
        height: 1px;
        margin: -1px;
        padding: 0;
        overflow: hidden;
        clip: rect(0, 0, 0, 0);
        border: 0;
    }

    tbody tr {
        margin: 0 16px 12px;
        padding: 16px;
        border-radius: var(--radius-sm);
        border: 1px solid var(--border);
        background: var(--bg-primary);
    }

    tbody tr:last-child {
        margin-bottom: 16px;
    }

    tbody td {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 0;
        border-bottom: 1px solid var(--border);
        font-size: 0.85rem;
    }

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

    tbody td::before {
        content: attr(data-label);
        font-weight: 600;
        font-size: 0.75rem;
        color: var(--text-secondary);
        text-transform: uppercase;
        letter-spacing: 0.04em;
        flex-shrink: 0;
        margin-right: 16px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .content-area {
        padding: 16px;
    }

    .top-bar {
        padding: 14px 16px;
    }

    .page-title {
        font-size: 1.1rem;
    }

    .current-date span {
        display: none;
    }
}