/* =============================================
   ACCOUNTING ERP - MASTER STYLESHEET
   Modern, dark-themed enterprise accounting UI
   ============================================= */

/* ---------- CSS Variables ---------- */
:root {
    --bg-primary: #0f1923;
    --bg-secondary: #1a2736;
    --bg-card: #1e2d3d;
    --bg-input: #253545;
    --bg-hover: #2a3f52;
    --accent-primary: #00d4aa;
    --accent-secondary: #0ea5e9;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    --accent-success: #22c55e;
    --accent-info: #8b5cf6;
    --text-primary: #e8edf2;
    --text-secondary: #8899aa;
    --text-muted: #5a6d7e;
    --border-color: #2a3f52;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --sidebar-width: 260px;
    --header-height: 60px;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition-speed: 0.25s;
}

/* ---------- Global Resets ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* =============================================
   LOGIN PAGE
   ============================================= */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0f1923 0%, #1a2736 50%, #0d2137 100%);
    position: relative;
    overflow: hidden;
}

.login-wrapper::before {
    content: '';
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0,212,170,0.08) 0%, transparent 70%);
    top: -100px;
    right: -100px;
    border-radius: 50%;
}

.login-wrapper::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(14,165,233,0.06) 0%, transparent 70%);
    bottom: -80px;
    left: -80px;
    border-radius: 50%;
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px;
    width: 100%;
    max-width: 440px;
    position: relative;
    z-index: 1;
    box-shadow: 0 20px 60px var(--shadow-color);
}

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

.login-card .brand h1 {
    font-size: 28px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 6px;
}

.login-card .brand p {
    color: var(--text-secondary);
    font-size: 13px;
}

/* ---------- Form Controls ---------- */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font-family);
    transition: all var(--transition-speed);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 170, 0.15);
}

.form-control::placeholder {
    color: var(--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='%238899aa' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 32px;
}

.btn-login {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--accent-primary), #00b894);
    border: none;
    border-radius: 8px;
    color: #0f1923;
    font-size: 15px;
    font-weight: 700;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-speed);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-login:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(0, 212, 170, 0.3);
}

.btn-login:active {
    transform: translateY(0);
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-size: 13px;
}

.remember-me input[type="checkbox"] {
    accent-color: var(--accent-primary);
    width: 16px;
    height: 16px;
}

.validation-summary-errors {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    padding: 10px 14px;
    margin-bottom: 16px;
    color: var(--accent-danger);
    font-size: 13px;
}

.validation-summary-errors ul { list-style: none; padding: 0; margin: 0; }

/* =============================================
   LAYOUT: SIDEBAR + HEADER + CONTENT
   ============================================= */
.app-wrapper {
    display: flex;
    min-height: 100vh;
}

.app-wrapper.sidebar-collapsed {
    --sidebar-width: 70px;
}

/* ---------- Sidebar ---------- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 100;
    transition: width var(--transition-speed), transform var(--transition-speed);
}

.sidebar-brand {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 20px;
    border-bottom: 1px solid var(--border-color);
    transition: padding var(--transition-speed), justify-content var(--transition-speed);
}

.sidebar-logo {
    transition: max-height var(--transition-speed), max-width var(--transition-speed);
}

.sidebar-brand h2 {
    font-size: 18px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sidebar-nav {
    padding: 16px 0;
}

.nav-section {
    padding: 0 16px;
    margin-bottom: 8px;
}

.nav-section-title {
    font-size: 10px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 8px 8px 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    user-select: none;
    transition: color var(--transition-speed);
}

.nav-section-title:hover {
    color: var(--text-primary);
}

.nav-section-title::after {
    content: '\f107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 11px;
    transition: transform var(--transition-speed);
}

.nav-section.collapsed-section .nav-section-title::after {
    transform: rotate(-90deg);
}

.nav-section.collapsed-section .nav-link {
    display: none;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    transition: all var(--transition-speed);
    margin-bottom: 2px;
}

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

.nav-link.active {
    background: rgba(0, 212, 170, 0.1);
    color: var(--accent-primary);
}

.nav-link .nav-icon {
    width: 20px;
    text-align: center;
    font-size: 16px;
}

/* ---------- Sidebar Collapsed States ---------- */
.sidebar-collapsed .sidebar-brand {
    justify-content: center;
    padding: 0;
}

.sidebar-collapsed .sidebar-logo {
    max-height: 30px;
    max-width: 50px;
}

.sidebar-collapsed .nav-section-title {
    display: none;
}

.sidebar-collapsed .nav-link {
    font-size: 0;
    gap: 0;
    padding: 10px;
    justify-content: center;
}

.btn-sidebar-toggle {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    padding: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: all var(--transition-speed);
}

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

/* ---------- Header ---------- */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    transition: margin-left var(--transition-speed);
}

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

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-left .company-info {
    display: flex;
    flex-direction: column;
}

.header-left .company-info .company-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.header-left .company-info .fy-name {
    font-size: 11px;
    color: var(--accent-primary);
    font-weight: 500;
}

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

.header-right .user-menu {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 13px;
    cursor: pointer;
}

.header-right .user-menu .avatar {
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0f1923;
    font-weight: 700;
    font-size: 14px;
}

.btn-logout {
    padding: 6px 16px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 6px;
    color: var(--accent-danger);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 0.2);
}

/* ---------- Page Content ---------- */
.page-content {
    padding: 24px;
    flex: 1;
}

.page-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 24px;
}

/* =============================================
   DASHBOARD CARDS
   ============================================= */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    transition: all var(--transition-speed);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    border-radius: 12px 0 0 12px;
}

.stat-card.cash::before { background: var(--accent-primary); }
.stat-card.bank::before { background: var(--accent-secondary); }
.stat-card.receivable::before { background: var(--accent-warning); }
.stat-card.payable::before { background: var(--accent-danger); }
.stat-card.income::before { background: var(--accent-success); }
.stat-card.expense::before { background: var(--accent-info); }
.stat-card.profit::before { background: linear-gradient(180deg, var(--accent-primary), var(--accent-secondary)); }

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--shadow-color);
}

.stat-card .stat-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.stat-card .stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-card .stat-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 36px;
    opacity: 0.08;
    color: var(--text-primary);
}

/* =============================================
   DATA TABLES
   ============================================= */
.data-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

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

.data-card-header h3 {
    font-size: 16px;
    font-weight: 600;
}

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

.data-table thead th {
    padding: 12px 16px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}

.data-table tbody td {
    padding: 12px 16px;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(42, 63, 82, 0.5);
}

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

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

/* =============================================
   BUTTONS
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-speed);
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), #00b894);
    color: #0f1923;
    border: none;
}

.btn-primary:hover {
    box-shadow: 0 4px 15px rgba(0, 212, 170, 0.3);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background: var(--bg-hover);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.1);
    color: var(--accent-danger);
    border-color: rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.2);
}

.btn-sm {
    padding: 5px 10px;
    font-size: 12px;
}

/* =============================================
   ACCOUNT TREE
   ============================================= */
.account-tree {
    padding: 16px;
}

.tree-node {
    margin-left: 20px;
}

.tree-node-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 6px;
    cursor: pointer;
    transition: background var(--transition-speed);
}

.tree-node-header:hover {
    background: var(--bg-hover);
}

.tree-toggle {
    width: 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 12px;
    transition: transform var(--transition-speed);
}

.tree-toggle.expanded {
    transform: rotate(90deg);
}

.tree-node-name {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
}

.tree-node-name.is-group {
    font-weight: 700;
    color: var(--accent-secondary);
}

.tree-node-balance {
    margin-left: auto;
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
}

.tree-children {
    display: none;
}

.tree-children.show {
    display: block;
}

/* =============================================
   VOUCHER ENTRY
   ============================================= */
.voucher-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
}

.voucher-header {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.voucher-details-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
}

.voucher-details-table th {
    padding: 10px 12px;
    background: var(--bg-input);
    color: var(--text-muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.voucher-details-table td {
    padding: 6px 8px;
}

.voucher-details-table input,
.voucher-details-table select {
    width: 100%;
    padding: 8px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 13px;
    font-family: var(--font-family);
}

.voucher-details-table input:focus,
.voucher-details-table select:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.voucher-totals {
    display: flex;
    justify-content: flex-end;
    gap: 32px;
    padding: 16px 0;
    border-top: 2px solid var(--border-color);
}

.voucher-totals .total-item {
    text-align: right;
}

.voucher-totals .total-label {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.voucher-totals .total-value {
    font-size: 20px;
    font-weight: 700;
}

.voucher-totals .total-value.balanced {
    color: var(--accent-success);
}

.voucher-totals .total-value.unbalanced {
    color: var(--accent-danger);
}

.voucher-actions {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

/* =============================================
   REPORTS
   ============================================= */
.report-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.report-filters {
    display: flex;
    gap: 12px;
    align-items: center;
}

.report-filters .form-control {
    width: auto;
    min-width: 180px;
}

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

.report-table thead th {
    padding: 12px 16px;
    background: var(--bg-input);
    color: var(--text-muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-align: left;
    border-bottom: 2px solid var(--border-color);
}

.report-table tbody td {
    padding: 10px 16px;
    font-size: 13px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(42, 63, 82, 0.5);
}

.report-table tbody tr:hover {
    background: var(--bg-hover);
}

.report-table tfoot td {
    padding: 12px 16px;
    font-weight: 700;
    color: var(--text-primary);
    border-top: 2px solid var(--accent-primary);
    font-size: 14px;
}

.amount-dr { color: var(--accent-primary); }
.amount-cr { color: var(--accent-warning); }
.amount-positive { color: var(--accent-success); }
.amount-negative { color: var(--accent-danger); }

/* =============================================
   BADGES & STATUS
   ============================================= */
.badge {
    display: inline-flex;
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.badge-success { background: rgba(34,197,94,0.15); color: var(--accent-success); }
.badge-warning { background: rgba(245,158,11,0.15); color: var(--accent-warning); }
.badge-danger { background: rgba(239,68,68,0.15); color: var(--accent-danger); }
.badge-info { background: rgba(14,165,233,0.15); color: var(--accent-secondary); }

/* =============================================
   MODALS
   ============================================= */
.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-primary);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 16px 20px;
}

.modal-header .modal-title {
    font-size: 16px;
    font-weight: 600;
}

.modal-header .btn-close {
    filter: invert(1);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 12px 20px;
}

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

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

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

    .voucher-header {
        grid-template-columns: 1fr;
    }

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

    .login-card {
        margin: 16px;
    }
}

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

/* =============================================
   LOADING & ANIMATIONS
   ============================================= */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

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

.fade-in {
    animation: fadeIn 0.4s ease-out;
}

/* Toast notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 14px 20px;
    margin-bottom: 10px;
    box-shadow: 0 8px 30px var(--shadow-color);
    display: flex;
    align-items: center;
    gap: 10px;
    animation: fadeIn 0.3s ease-out;
    min-width: 300px;
}

.toast.success { border-left: 4px solid var(--accent-success); }
.toast.error { border-left: 4px solid var(--accent-danger); }
.toast.info { border-left: 4px solid var(--accent-secondary); }

/* Submenu rotation */
.submenu-toggle[aria-expanded="false"] .fa-chevron-down {
    transform: rotate(-90deg);
}