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

:root {
    --orange: #E8734A;
    --orange-light: #F09070;
    --orange-dark: #C45A32;
    --green: #4A6B5D;
    --green-light: #5E8573;
    --green-dark: #3A5549;
    --bg-dark: #0F1410;
    --bg-card: #1A2320;
    --bg-card-hover: #1F2B27;
    --bg-input: #151D19;
    --border: #2A3832;
    --text: #E8ECE9;
    --text-muted: #8A9B93;
    --text-dim: #5C6E66;
    --danger: #E74C3C;
    --success: #27AE60;
    --warning: #F39C12;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 2px 8px rgba(0,0,0,0.3);
    --transition: all 0.2s ease;
}

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

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background: var(--bg-dark);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--orange); text-decoration: none; }
a:hover { color: var(--orange-light); }

/* ===== LOGIN ===== */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.login-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    width: 100%;
    padding: 20px;
}

.login-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 40px;
    width: 100%;
    max-width: 420px;
    text-align: center;
    box-shadow: var(--shadow);
}

.login-logo img {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    margin-bottom: 16px;
}

.login-title {
    color: var(--orange);
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 4px;
}

.login-subtitle {
    color: var(--green-light);
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
}

.login-desc {
    color: var(--text-muted);
    font-size: 13px;
    margin-bottom: 24px;
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 16px;
    text-align: left;
}

.form-group label {
    display: block;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
}

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

.form-control:focus {
    outline: none;
    border-color: var(--orange);
    box-shadow: 0 0 0 3px rgba(232, 115, 74, 0.15);
}

select.form-control {
    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 24 24' fill='none' stroke='%238A9B93' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

textarea.form-control {
    resize: vertical;
    min-height: 60px;
}

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

.form-full {
    grid-column: span 2;
}

.form-section-title {
    color: var(--orange);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding-bottom: 10px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--orange);
    color: #fff;
}
.btn-primary:hover { background: var(--orange-light); color: #fff; }
.btn-primary:active { background: var(--orange-dark); }

.btn-secondary {
    background: var(--green);
    color: #fff;
}
.btn-secondary:hover { background: var(--green-light); color: #fff; }

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.btn-outline:hover { border-color: var(--orange); color: var(--orange); }

.btn-danger {
    background: var(--danger);
    color: #fff;
}
.btn-danger:hover { background: #c0392b; color: #fff; }

.btn-sm {
    padding: 6px 12px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
    margin-top: 8px;
}

.btn-icon {
    padding: 6px 8px;
    background: var(--bg-card-hover);
    border: 1px solid var(--border);
    color: var(--text-muted);
}
.btn-icon:hover { border-color: var(--orange); color: var(--orange); }

.btn-icon-danger:hover { border-color: var(--danger); color: var(--danger); }

.btn-remove-row {
    background: none;
    border: none;
    color: var(--danger);
    font-size: 20px;
    cursor: pointer;
    padding: 4px 8px;
    line-height: 1;
}
.btn-remove-row:hover { color: #c0392b; }

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

.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 100vh;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    overflow-y: auto;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

.sidebar-logo {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    flex-shrink: 0;
}

.sidebar-brand {
    display: flex;
    flex-direction: column;
}

.brand-name {
    color: var(--orange);
    font-size: 14px;
    font-weight: 800;
}

.brand-sub {
    color: var(--green-light);
    font-size: 11px;
    font-weight: 500;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    text-decoration: none;
}

.nav-item svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

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

.nav-item.active {
    background: var(--orange);
    color: #fff;
}

.sidebar-footer {
    border-top: 1px solid var(--border);
    padding: 8px 0;
}

.nav-logout:hover {
    color: var(--danger);
}

.main-content {
    margin-left: 260px;
    flex: 1;
    padding: 24px 32px;
    min-height: 100vh;
}

/* Mobile sidebar toggle */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 200;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 8px;
    cursor: pointer;
    color: var(--text);
}

.sidebar-toggle svg {
    width: 24px;
    height: 24px;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 90;
}
.sidebar-overlay.open { display: block; }

/* ===== PAGE HEADER ===== */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.page-header h1 {
    font-size: 24px;
    font-weight: 700;
}

/* ===== CARDS ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}

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

.card-header h2 {
    font-size: 16px;
    font-weight: 700;
}

/* ===== STATS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 24px;
    height: 24px;
}

.stat-icon.orange { background: rgba(232,115,74,0.15); color: var(--orange); }
.stat-icon.green { background: rgba(74,107,93,0.2); color: var(--green-light); }
.stat-icon.danger { background: rgba(231,76,60,0.15); color: var(--danger); }
.stat-icon.warning { background: rgba(243,156,18,0.15); color: var(--warning); }

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

.stat-value {
    font-size: 24px;
    font-weight: 700;
    line-height: 1.2;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

/* ===== TABLES ===== */
.table-responsive {
    overflow-x: auto;
}

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

thead th {
    text-transform: uppercase;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-dim);
    letter-spacing: 0.5px;
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

tbody td {
    padding: 12px 14px;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

tbody tr:hover {
    background: var(--bg-card-hover);
}

.invoice-num {
    color: var(--orange);
    font-weight: 700;
}

/* ===== BADGES ===== */
.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.badge-pending {
    background: rgba(243,156,18,0.15);
    color: var(--warning);
}

.badge-paid {
    background: rgba(39,174,96,0.15);
    color: var(--success);
}

.badge-cancelled {
    background: rgba(231,76,60,0.15);
    color: var(--danger);
}

/* ===== ITEMS TABLE ===== */
#items-table {
    margin-bottom: 0;
}

#items-table .form-control {
    padding: 8px 10px;
    font-size: 13px;
}

.line-total {
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
}

.totals-section {
    display: flex;
    justify-content: flex-end;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.totals-table {
    width: auto;
    min-width: 250px;
}

.totals-table td {
    padding: 6px 16px;
    font-size: 14px;
    border: none;
}

.totals-table td:last-child {
    text-align: right;
}

.totals-table .total-row td {
    font-size: 18px;
    color: var(--orange);
    padding-top: 12px;
    border-top: 2px solid var(--orange);
}

/* ===== ALERTS ===== */
.alert {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    margin-bottom: 16px;
}

.alert-success {
    background: rgba(39,174,96,0.1);
    border: 1px solid rgba(39,174,96,0.3);
    color: var(--success);
}

.alert-error {
    background: rgba(231,76,60,0.1);
    border: 1px solid rgba(231,76,60,0.3);
    color: var(--danger);
}

.alert-info {
    background: rgba(232,115,74,0.1);
    border: 1px solid rgba(232,115,74,0.3);
    color: var(--orange);
}

/* ===== DETAIL VIEW ===== */
.detail-row {
    padding: 8px 0;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}

.detail-row:last-child { border-bottom: none; }

.detail-label {
    color: var(--text-muted);
    font-weight: 600;
    margin-right: 8px;
}

/* ===== PAGINATION ===== */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 16px;
    border-top: 1px solid var(--border);
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-dim);
}

.empty-state svg {
    margin-bottom: 16px;
    opacity: 0.5;
}

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

/* ===== UTILITIES ===== */
.text-orange { color: var(--orange); }
.text-muted { color: var(--text-muted); }
.text-right { text-align: right; }
.d-flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.align-center { align-items: center; }
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

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

    .sidebar-toggle {
        display: block;
    }

    .main-content {
        margin-left: 0;
        padding: 16px;
        padding-top: 56px;
    }

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

    .form-full {
        grid-column: span 1;
    }

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

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .page-header h1 {
        font-size: 20px;
    }
}

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

/* ===== PRINT ===== */
@media print {
    .sidebar, .sidebar-toggle, .sidebar-overlay, .page-header .btn, .btn {
        display: none !important;
    }

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

    body {
        background: #fff;
        color: #000;
    }
}