/**
 * Hisab / Ledger System - Modern Design System
 * Shared across Admin & User dashboards
 */

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

:root {
    /* Primary - Teal (trust, money, clarity) */
    --ledger-primary: #0d9488;
    --ledger-primary-hover: #0f766e;
    --ledger-primary-light: #ccfbf1;
    --ledger-primary-dark: #134e4a;

    /* Semantic */
    --ledger-credit: #059669;
    --ledger-debit: #dc2626;
    --ledger-success: #10b981;
    --ledger-warning: #f59e0b;
    --ledger-danger: #ef4444;

    /* Neutrals */
    --ledger-bg: #f8fafc;
    --ledger-bg-paper: #ffffff;
    --ledger-border: #e2e8f0;
    --ledger-border-strong: #cbd5e1;
    --ledger-text: #1e293b;
    --ledger-text-muted: #64748b;
    --ledger-text-subtle: #94a3b8;

    /* Sidebar (admin) */
    --sidebar-bg: #0f172a;
    --sidebar-text: #e2e8f0;
    --sidebar-hover: #1e293b;
    --sidebar-active: var(--ledger-primary);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.06);

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* Transitions */
    --transition: 0.2s ease;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--ledger-bg);
    color: var(--ledger-text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* ========== Admin Layout ========== */
.admin-wrap {
    display: flex;
    min-height: 100vh;
}

/* Topbar */
.admin-topbar {
    display: none;
    background: var(--ledger-bg-paper);
    border-bottom: 1px solid var(--ledger-border);
    padding: 12px 20px;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 200;
}

.admin-topbar .logo {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--ledger-primary);
    text-decoration: none;
}

.admin-topbar .menu-toggle {
    background: none;
    border: none;
    padding: 8px;
    cursor: pointer;
    color: var(--ledger-text);
    border-radius: var(--radius-sm);
}

.admin-topbar .menu-toggle:hover {
    background: var(--ledger-bg);
}

.admin-topbar .menu-toggle svg {
    display: block;
    width: 24px;
    height: 24px;
}

/* Sidebar */
.admin-sidebar {
    width: 260px;
    min-width: 260px;
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: transform 0.25s ease, margin 0.25s ease;
    z-index: 150;
}

.admin-sidebar .sidebar-brand {
    padding: 20px;
    font-weight: 700;
    font-size: 1.25rem;
    color: white;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.admin-sidebar nav {
    padding: 16px 12px;
    flex: 1;
}

.admin-sidebar nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    color: var(--sidebar-text);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: background var(--transition), color var(--transition);
}

.admin-sidebar nav a:hover {
    background: var(--sidebar-hover);
    color: white;
}

.admin-sidebar nav a.active {
    background: var(--ledger-primary);
    color: white;
}

.admin-sidebar .sidebar-footer {
    padding: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.admin-sidebar .sidebar-footer a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    color: var(--ledger-danger);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
}

.admin-sidebar .sidebar-footer a:hover {
    background: rgba(239, 68, 68, 0.15);
}

/* Main content area */
.admin-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.admin-content {
    flex: 1;
    padding: 24px;
}

/* Page title block */
.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ledger-text);
}

.page-header p {
    margin: 4px 0 0;
    color: var(--ledger-text-muted);
    font-size: 0.9375rem;
}

/* Stat cards */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--ledger-bg-paper);
    border: 1px solid var(--ledger-border);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--shadow-card);
    transition: box-shadow var(--transition), border-color var(--transition);
}

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

.stat-card .stat-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--ledger-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 6px;
}

.stat-card .stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--ledger-text);
    font-variant-numeric: tabular-nums;
}

.stat-card .stat-value.credit { color: var(--ledger-credit); }
.stat-card .stat-value.debit { color: var(--ledger-debit); }
.stat-card .stat-value.primary { color: var(--ledger-primary); }

.stat-card .stat-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    font-size: 1.25rem;
}

.stat-card .stat-icon.users { background: var(--ledger-primary-light); color: var(--ledger-primary); }
.stat-card .stat-icon.accounts { background: #dbeafe; color: #2563eb; }
.stat-card .stat-icon.entries { background: #fef3c7; color: var(--ledger-warning); }
.stat-card .stat-icon.credit { background: #d1fae5; color: var(--ledger-credit); }
.stat-card .stat-icon.debit { background: #fee2e2; color: var(--ledger-debit); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: inherit;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: background var(--transition), color var(--transition), transform 0.1s ease;
    text-decoration: none;
}

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

.btn-primary:hover {
    background: var(--ledger-primary-hover);
    color: white;
}

.btn-outline {
    background: transparent;
    color: var(--ledger-primary);
    border: 1px solid var(--ledger-primary);
}

.btn-outline:hover {
    background: var(--ledger-primary-light);
}

/* User dashboard specific */
.user-dashboard-page {
    background: var(--ledger-bg);
    background-image:
        radial-gradient(ellipse 100% 60% at 50% -10%, var(--ledger-primary-light) 0%, transparent 55%);
    min-height: 100vh;
}

.user-topbar {
    background: var(--ledger-bg-paper);
    border-bottom: 1px solid var(--ledger-border);
    padding: 14px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.user-topbar .logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--ledger-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.user-topbar .logo:hover {
    color: var(--ledger-primary-hover);
}

.user-topbar .user-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.user-topbar .user-name {
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--ledger-text-muted);
}

.user-topbar .logout-btn {
    color: var(--ledger-danger);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    transition: background var(--transition), color var(--transition);
}

.user-topbar .logout-btn:hover {
    background: #fef2f2;
    color: var(--ledger-danger);
}

.user-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 32px 24px;
}

.user-welcome h1 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ledger-text);
}

.user-welcome p {
    color: var(--ledger-text-muted);
    margin: 6px 0 0;
    font-size: 0.9375rem;
}

.search-container {
    margin-bottom: 24px;
}

.search-input {
    width: 100%;
    max-width: 400px;
    padding: 12px 16px;
    border: 1px solid var(--ledger-border);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-family: inherit;
    outline: none;
    background: var(--ledger-bg-paper);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.search-input::placeholder {
    color: var(--ledger-text-subtle);
}

.search-input:focus {
    border-color: var(--ledger-primary);
    box-shadow: 0 0 0 3px var(--ledger-primary-light);
}

.account-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}

.account-card {
    background: var(--ledger-bg-paper);
    border: 1px solid var(--ledger-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: var(--shadow-card);
}

.account-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--ledger-primary);
}

.account-card-inner {
    margin-bottom: 4px;
}

.account-card-icon {
    display: inline-block;
    font-size: 1.5rem;
    margin-bottom: 12px;
    opacity: 0.9;
}

.account-card .account-name {
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0 0 12px 0;
    color: var(--ledger-text);
    line-height: 1.3;
}

.account-card .balance-label {
    font-size: 0.6875rem;
    color: var(--ledger-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 4px;
}

.account-card .balance-amount {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 0 20px 0;
    font-variant-numeric: tabular-nums;
    color: var(--ledger-text);
}

.account-card .balance-amount.balance-negative {
    color: var(--ledger-debit);
}

.account-card .btn-open {
    display: block;
    background: var(--ledger-bg);
    color: var(--ledger-primary);
    text-align: center;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: background var(--transition), color var(--transition);
}

.account-card:hover .btn-open {
    background: var(--ledger-primary);
    color: white;
}

/* User dashboard empty state */
.empty-state {
    background: var(--ledger-bg-paper);
    border: 1px dashed var(--ledger-border-strong);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    text-align: center;
    max-width: 420px;
    margin: 0 auto;
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.6;
}

.empty-state-title {
    margin: 0 0 8px 0;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--ledger-text);
}

.empty-state-text {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--ledger-text-muted);
    line-height: 1.5;
}

/* Responsive: Admin sidebar as overlay on small screens */
@media (max-width: 1024px) {
    .admin-topbar {
        display: flex;
    }

    .admin-sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        margin: 0;
        transform: translateX(-100%);
    }

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

    .admin-main {
        width: 100%;
    }

    .admin-content {
        padding: 20px 16px;
    }

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

@media (min-width: 640px) {
    .stat-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1025px) {
    .admin-sidebar {
        position: relative;
    }
}

@media (min-width: 768px) {
    .stat-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 900px) {
    .stat-grid.stat-grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Tables (admin lists) */
.admin-content table {
    width: 100%;
    background: var(--ledger-bg-paper);
    border-collapse: collapse;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--ledger-border);
    font-size: 0.9375rem;
}

.admin-content table th,
.admin-content table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--ledger-border);
}

.admin-content table th {
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    font-weight: 600;
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

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

.admin-content table tbody tr:hover {
    background: var(--ledger-bg);
}

.admin-content table a {
    color: var(--ledger-primary);
    text-decoration: none;
    font-weight: 500;
}

.admin-content table a:hover {
    text-decoration: underline;
}

.admin-content h2 {
    margin: 0 0 16px 0;
    font-size: 1.25rem;
    font-weight: 700;
}

/* Alerts / messages */
.admin-content .msg-success { color: var(--ledger-success); margin-bottom: 16px; }
.admin-content .msg-error { color: var(--ledger-danger); margin-bottom: 16px; }

/* User dashboard responsive */
@media (max-width: 640px) {
    .user-topbar {
        padding: 12px 16px;
        flex-wrap: wrap;
        gap: 12px;
    }

    .user-container {
        padding: 24px 16px;
    }

    .account-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .empty-state {
        padding: 32px 20px;
    }

    .empty-state-icon {
        font-size: 2.5rem;
    }
}

/* Overlay when sidebar is open on mobile */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 140;
}

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

/* ========== Auth: Login & Landing ========== */
.auth-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--ledger-bg);
    background-image: 
        radial-gradient(ellipse 80% 50% at 50% -20%, var(--ledger-primary-light), transparent),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(13, 148, 136, 0.08), transparent),
        radial-gradient(ellipse 50% 30% at 0% 80%, rgba(13, 148, 136, 0.06), transparent);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--ledger-bg-paper);
    border-radius: var(--radius-xl);
    padding: 40px 32px;
    border: 1px solid var(--ledger-border);
    box-shadow: var(--shadow-lg);
    transition: box-shadow var(--transition);
}

.auth-card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
}

.auth-logo {
    display: block;
    text-align: center;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--ledger-primary);
    text-decoration: none;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
    transition: color var(--transition);
}

.auth-logo:hover {
    color: var(--ledger-primary-hover);
}

.auth-tagline {
    text-align: center;
    color: var(--ledger-text-muted);
    font-size: 0.9375rem;
    margin: 0 0 28px 0;
}

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

.auth-form label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--ledger-text);
}

.auth-form input[type="text"],
.auth-form input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--ledger-border);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-family: inherit;
    outline: none;
    background: var(--ledger-bg-paper);
    transition: border-color var(--transition), box-shadow var(--transition);
    box-sizing: border-box;
}

.auth-form input::placeholder {
    color: var(--ledger-text-subtle);
}

.auth-form input:focus {
    border-color: var(--ledger-primary);
    box-shadow: 0 0 0 3px var(--ledger-primary-light);
}

.auth-form .btn-submit {
    width: 100%;
    padding: 14px;
    margin-top: 8px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    background: var(--ledger-primary);
    color: white;
    font-family: inherit;
    transition: background var(--transition);
}

.auth-form .btn-submit:hover {
    background: var(--ledger-primary-hover);
}

.auth-form .btn-submit:active {
    transform: scale(0.99);
}

.auth-error {
    background: #fef2f2;
    color: var(--ledger-danger);
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    margin-bottom: 20px;
    border: 1px solid #fee2e2;
    display: flex;
    align-items: center;
    gap: 10px;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    font-size: 0.8125rem;
    color: var(--ledger-text-muted);
}

/* Landing (main) page */
.landing-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--ledger-bg);
    background-image: 
        radial-gradient(ellipse 80% 50% at 50% -20%, var(--ledger-primary-light), transparent),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(13, 148, 136, 0.08), transparent);
}

.landing-card {
    width: 100%;
    max-width: 440px;
    background: var(--ledger-bg-paper);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    border: 1px solid var(--ledger-border);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.landing-card h1 {
    margin: 0 0 12px 0;
    font-size: 2rem;
    font-weight: 700;
    color: var(--ledger-primary);
    letter-spacing: -0.02em;
}

.landing-card p {
    margin: 0 0 28px 0;
    color: var(--ledger-text-muted);
    font-size: 1rem;
}

.landing-card .btn {
    display: inline-flex;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    text-decoration: none;
    background: var(--ledger-primary);
    color: white;
    transition: background var(--transition);
}

.landing-card .btn:hover {
    background: var(--ledger-primary-hover);
    color: white;
}

@media (max-width: 480px) {
    .auth-card {
        padding: 28px 20px;
    }
    .landing-card {
        padding: 32px 24px;
    }
    .landing-card h1 {
        font-size: 1.5rem;
    }
}

/* ========== Phase 4: toasts ========== */
#ledger-toast-host {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: min(360px, calc(100vw - 40px));
    pointer-events: none;
}

.ledger-toast {
    padding: 12px 16px;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.25s ease, transform 0.25s ease;
    pointer-events: auto;
}

.ledger-toast--show {
    opacity: 1;
    transform: translateY(0);
}

.ledger-toast--success {
    background: #ecfdf5;
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.ledger-toast--error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.ledger-toast--info {
    background: var(--ledger-bg-paper);
    color: var(--ledger-text);
    border: 1px solid var(--ledger-border);
}