/* ═══════════════════════════════════════════════════════════
   Mora-Aquatics Design System
   Color Palette: Deep Navy, Electric Blue, Cyan, White
   ═══════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ─── CSS Variables ─────────────────────────────────────── */
:root {
    --bg-primary: #060b14;
    --bg-secondary: #0d1424;
    --bg-tertiary: #141e30;
    --bg-card: rgba(15, 23, 42, 0.85);
    --bg-card-hover: rgba(20, 30, 48, 0.95);
    --bg-glass: rgba(15, 23, 42, 0.6);

    --accent-blue: #3b82f6;
    --accent-blue-hover: #60a5fa;
    --accent-blue-glow: rgba(59, 130, 246, 0.3);
    --accent-cyan: #22d3ee;
    --accent-cyan-glow: rgba(34, 211, 238, 0.2);
    --accent-gradient: linear-gradient(135deg, #3b82f6, #22d3ee);

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-heading: #e2e8f0;

    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);

    --border-color: rgba(59, 130, 246, 0.15);
    --border-subtle: rgba(148, 163, 184, 0.08);

    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.15);

    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;

    --sidebar-width: 260px;
    --header-height: 64px;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-heading);
    font-weight: 600;
    line-height: 1.3;
}

a { color: var(--accent-blue); text-decoration: none; }
a:hover { color: var(--accent-blue-hover); }

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

.login-page::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 40%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(34, 211, 238, 0.05) 0%, transparent 50%);
    animation: loginBgPulse 8s ease-in-out infinite alternate;
}

@keyframes loginBgPulse {
    0% { transform: scale(1) rotate(0deg); }
    100% { transform: scale(1.05) rotate(2deg); }
}

.login-card {
    position: relative;
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    animation: loginSlideIn 0.6s ease-out;
}

@keyframes loginSlideIn {
    from { opacity: 0; transform: translateY(20px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

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

.login-logo .logo-icon {
    width: 80px;
    height: auto;
    margin: 0 auto 16px auto;
    display: block;
}

.login-logo h1 {
    font-size: 1.6rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-logo p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 4px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.login-error {
    background: var(--danger-bg);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: var(--danger);
    padding: 10px 14px;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    margin-bottom: 16px;
    display: none;
    animation: shake 0.4s ease;
}

.login-error.visible {
    display: block;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-6px); }
    75% { transform: translateX(6px); }
}

/* ─── App Layout ────────────────────────────────────────── */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* ─── Sidebar ───────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform var(--transition-normal);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-subtle);
}

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

.sidebar-header .brand-icon {
    width: 36px;
    height: auto;
    display: block;
}

.sidebar-header .brand-text h2 {
    font-size: 1.1rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-header .brand-text span {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    font-size: 0.65rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 0 12px;
    margin-bottom: 8px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 450;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    margin-bottom: 2px;
}

.nav-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(59, 130, 246, 0.12);
    color: var(--accent-blue);
    border-color: rgba(59, 130, 246, 0.2);
}

.nav-item .nav-icon, .mask-icon {
    width: 20px;
    height: 20px;
    background-color: currentColor;
    -webkit-mask-image: var(--icon-url);
    mask-image: var(--icon-url);
    -webkit-mask-size: contain;
    mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
    display: inline-block;
    vertical-align: middle;
}

.nav-item .nav-icon {
    margin-right: 4px;
}

.nav-item .nav-badge {
    margin-left: auto;
    background: var(--danger);
    color: white;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px 12px;
    border-top: 1px solid var(--border-subtle);
}

.sidebar-footer .nav-item {
    color: var(--text-muted);
}

.sidebar-footer .nav-item:hover {
    color: var(--danger);
}



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

.page-header {
    padding: 24px 32px;
    border-bottom: 1px solid var(--border-subtle);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(10px);
}

.page-header h1 {
    font-size: 1.4rem;
    font-weight: 700;
}

.page-header .header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border-radius: 20px;
}

.connection-status .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.connection-status.connected .dot {
    background: var(--success);
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
    animation: pulse 2s infinite;
}

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

.page-content {
    padding: 28px 32px;
}

/* ─── Cards ─────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.card:hover {
    box-shadow: var(--shadow-md), var(--shadow-glow);
    border-color: rgba(59, 130, 246, 0.25);
}

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

.card-header h2 {
    font-size: 1.1rem;
}

.card-header h3 {
    font-size: 1rem;
}

/* ─── Live Tap Card ─────────────────────────────────────── */
.tap-card {
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(20, 30, 48, 0.9));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 32px;
    position: relative;
    overflow: hidden;
    animation: tapCardAppear 0.5s ease-out;
}

.tap-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--accent-gradient);
}

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

.tap-card .person-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.tap-card .person-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.tap-card .person-avatar.student {
    background: var(--accent-gradient);
}

.tap-card .person-avatar.coach {
    background: linear-gradient(135deg, #f59e0b, #ef4444);
}

.tap-card .person-info h2 {
    font-size: 1.3rem;
    margin-bottom: 2px;
}

.tap-card .person-info .person-meta {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.tap-card .tap-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.tap-detail-item {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    padding: 14px 16px;
}

.tap-detail-item .detail-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.tap-detail-item .detail-value {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
}

.tap-detail-item .detail-value.highlight {
    color: var(--accent-cyan);
}

.tap-detail-item .detail-value.danger {
    color: var(--danger);
}

.tap-detail-item .detail-value.success {
    color: var(--success);
}

.tap-detail-item .detail-value.warning {
    color: var(--warning);
}

.tap-card .tap-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ─── Unpaid Alert ──────────────────────────────────────── */
.unpaid-alert {
    background: var(--danger-bg);
    border: 1px solid rgba(239, 68, 68, 0.25);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.unpaid-alert .alert-icon {
    font-size: 1.3rem;
}

.unpaid-alert .alert-text {
    flex: 1;
}

.unpaid-alert .alert-text strong {
    color: var(--danger);
}

.unpaid-alert .alert-amount {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--danger);
}

/* ─── Recent Taps List ──────────────────────────────────── */
.recent-taps {
    margin-top: 28px;
}

.recent-taps h3 {
    font-size: 0.95rem;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.tap-list-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-subtle);
    margin-bottom: 6px;
    transition: background var(--transition-fast);
    animation: tapItemSlide 0.3s ease-out;
}

@keyframes tapItemSlide {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

.tap-list-item:hover {
    background: rgba(255, 255, 255, 0.02);
}

.tap-list-item .tap-time {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    min-width: 60px;
    font-variant-numeric: tabular-nums;
}

.tap-list-item .tap-name {
    font-weight: 500;
    flex: 1;
}

.tap-list-item .tap-badge {
    font-size: 0.75rem;
    padding: 3px 10px;
    border-radius: 12px;
    font-weight: 500;
}

.tap-list-item .tap-badge.student {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
}

.tap-list-item .tap-badge.coach {
    background: var(--warning-bg);
    color: var(--warning);
}

.tap-list-item .tap-course {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ─── Buttons ───────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 550;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    border-color: transparent;
}

.btn-primary:hover {
    box-shadow: 0 4px 16px var(--accent-blue-glow);
    transform: translateY(-1px);
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-success:hover {
    background: #0d9669;
    box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
    box-shadow: 0 4px 16px rgba(239, 68, 68, 0.3);
}

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

.btn-outline:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-color: var(--accent-blue);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    padding: 8px 12px;
}

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

.btn-sm {
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 0.95rem;
}

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

/* ─── Inputs ────────────────────────────────────────────── */
input, select, textarea {
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    color: var(--text-primary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 10px 14px;
    width: 100%;
    outline: none;
    transition: all var(--transition-fast);
}

input:focus, select:focus, textarea:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px var(--accent-blue-glow);
}

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

select {
    cursor: pointer;
    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='%2394a3b8' d='M6 8.825L1.175 4 2.238 2.938 6 6.7l3.763-3.762L10.825 4z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ─── Tables ────────────────────────────────────────────── */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead th {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background: var(--bg-card);
    z-index: 1;
}

.data-table tbody tr {
    transition: background var(--transition-fast);
    border-bottom: 1px solid var(--border-subtle);
}

.data-table tbody tr:hover {
    background: rgba(59, 130, 246, 0.04);
}

.data-table tbody td {
    padding: 12px 16px;
    font-size: 0.88rem;
}

.data-table .actions-cell {
    display: flex;
    gap: 6px;
    justify-content: flex-end;
}

/* ─── Badges ────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 12px;
}

.badge-student {
    background: rgba(59, 130, 246, 0.15);
    color: var(--accent-blue);
}

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

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

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

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

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

.badge-inactive {
    background: rgba(100, 116, 139, 0.15);
    color: var(--text-muted);
}

/* ─── Search Bar ────────────────────────────────────────── */
.search-bar {
    position: relative;
    max-width: 400px;
}

.search-bar input {
    padding-left: 40px;
}

.search-bar .search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.9rem;
    pointer-events: none;
}

/* ─── Modal ─────────────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

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

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 0;
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    transform: translateY(20px) scale(0.97);
    transition: transform var(--transition-normal);
}

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-subtle);
}

.modal-header h2 {
    font-size: 1.1rem;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: all var(--transition-fast);
}

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

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-subtle);
}

/* ─── Toast Notifications ───────────────────────────────── */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 20px;
    min-width: 300px;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    pointer-events: auto;
    animation: toastIn 0.4s ease-out;
}

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

@keyframes toastIn {
    from { opacity: 0; transform: translateX(40px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
    to { opacity: 0; transform: translateX(40px); }
}

.toast-icon { font-size: 1.2rem; }

.toast-success { border-left: 3px solid var(--success); }
.toast-success .toast-icon { color: var(--success); }

.toast-error { border-left: 3px solid var(--danger); }
.toast-error .toast-icon { color: var(--danger); }

.toast-info { border-left: 3px solid var(--accent-blue); }
.toast-info .toast-icon { color: var(--accent-blue); }

.toast-message {
    flex: 1;
    font-size: 0.85rem;
}

/* ─── Empty State ───────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-state p {
    font-size: 0.9rem;
    max-width: 400px;
    margin: 0 auto;
}

/* ─── Waiting State (No tap yet) ────────────────────────── */
.waiting-state {
    text-align: center;
    padding: 80px 20px;
}

.waiting-state .rfid-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px auto;
    background-color: var(--accent-blue);
    -webkit-mask-image: url('/Resources/waiting-for-rfid-tap.png');
    mask-image: url('/Resources/waiting-for-rfid-tap.png');
    -webkit-mask-size: contain;
    mask-size: contain;
    -webkit-mask-repeat: no-repeat;
    mask-repeat: no-repeat;
    -webkit-mask-position: center;
    mask-position: center;
    animation: rfidPulse 2s ease-in-out infinite;
    display: block;
}

@keyframes rfidPulse {
    0%, 100% { transform: scale(1); opacity: 0.7; }
    50% { transform: scale(1.08); opacity: 1; }
}

.waiting-state h2 {
    font-size: 1.4rem;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.waiting-state p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* ─── Stats Grid ────────────────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 20px;
    transition: all var(--transition-normal);
}

.stat-card:hover {
    border-color: var(--border-color);
    box-shadow: var(--shadow-glow);
}

.stat-card .stat-label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.stat-card .stat-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-card .stat-value.text-success { color: var(--success); }
.stat-card .stat-value.text-danger { color: var(--danger); }
.stat-card .stat-value.text-blue { color: var(--accent-blue); }

/* ─── Attendance Calendar Grid ──────────────────────────── */
.attendance-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin: 16px 0;
}

.attendance-grid .day-label {
    text-align: center;
    font-size: 0.65rem;
    color: var(--text-muted);
    padding: 4px;
    font-weight: 600;
}

.attendance-grid .day-cell {
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    transition: all var(--transition-fast);
}

.attendance-grid .day-cell.present {
    background: var(--success);
    color: white;
    font-weight: 600;
}

.attendance-grid .day-cell.today {
    border: 2px solid var(--accent-blue);
}

/* ─── Package Cards ─────────────────────────────────────── */
.package-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 16px;
}

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

.package-card .package-name {
    font-size: 1.1rem;
    font-weight: 600;
}

.package-card .tier-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.02);
    border-radius: var(--radius-md);
    margin-bottom: 6px;
    border: 1px solid var(--border-subtle);
}

.package-card .tier-days {
    font-weight: 600;
    min-width: 80px;
    color: var(--accent-cyan);
}

.package-card .tier-fee {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 100px;
}

.package-card .tier-actions {
    margin-left: auto;
    display: flex;
    gap: 6px;
}

/* ─── Fee History Table ─────────────────────────────────── */
.fee-cycle-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
    margin-bottom: 8px;
}

.fee-cycle-row .cycle-info {
    flex: 1;
}

.fee-cycle-row .cycle-info .cycle-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.fee-cycle-row .cycle-amount {
    font-size: 1.1rem;
    font-weight: 700;
}

/* ─── Tabs ──────────────────────────────────────────────── */
.tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 24px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 4px;
}

.tab {
    flex: 1;
    padding: 10px 16px;
    text-align: center;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    background: none;
    font-family: 'Inter', sans-serif;
}

.tab:hover {
    color: var(--text-primary);
}

.tab.active {
    background: var(--accent-blue);
    color: white;
}

/* ─── Loading Spinner ───────────────────────────────────── */
.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ─── Responsive ────────────────────────────────────────── */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 0px;
    }

    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
        width: 260px;
    }

    .page-content {
        padding: 16px;
    }

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

    .tap-card .tap-details {
        grid-template-columns: 1fr 1fr;
    }

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

/* ─── Scrollbar ─────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ─── Utility ───────────────────────────────────────────── */
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-blue { color: var(--accent-blue) !important; }
.text-cyan { color: var(--accent-cyan) !important; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.gap-12 { gap: 12px; }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-full { width: 100%; }
.hidden { display: none !important; }

/* ─── Scan Card Button ──────────────────────────────────── */
.btn.scanning {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    animation: scanPulse 1.5s ease-in-out infinite;
}

@keyframes scanPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(34, 211, 238, 0.3); }
    50% { box-shadow: 0 0 12px 4px rgba(34, 211, 238, 0.15); }
}

/* ─── Tooltip Utility ─────────────────────────────────────── */
[data-tip] {
    position: relative;
    cursor: pointer;
}

[data-tip]::after {
    content: attr(data-tip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(0px) scale(0.95);
    background: var(--bg-selected);
    color: var(--text-primary);
    padding: 6px 12px;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.5);
    border: 1px solid var(--border-color);
}

[data-tip]:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-8px) scale(1);
}

/* ─── Daily Report ─────────────────────────────────────── */
.time-chip {
    display: inline-block;
    background: rgba(59, 130, 246, 0.12);
    color: var(--accent-blue);
    font-size: 0.72rem;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 10px;
    margin: 2px 3px 2px 0;
    font-variant-numeric: tabular-nums;
}

.daily-report-date-display {
    display: flex;
    align-items: center;
    gap: 8px;
}