/* ============================================================
   Elite Body – Invoice Management
   Design: Black / White / Gold (#C9A84C)
   ============================================================ */

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

:root {
    --gold:        #C9A84C;
    --gold-light:  #E2C882;
    --gold-dark:   #A07A28;
    --black:       #0D0D0D;
    --dark:        #1A1A1A;
    --dark-2:      #242424;
    --dark-3:      #2E2E2E;
    --dark-4:      #3A3A3A;
    --mid:         #666666;
    --light:       #F5F5F5;
    --lighter:     #FAFAFA;
    --white:       #FFFFFF;
    --border:      #E8E8E8;
    --border-dark: #3A3A3A;
    --success:     #22C55E;
    --warning:     #F59E0B;
    --danger:      #EF4444;
    --blue:        #3B82F6;
    --sidebar-w:   240px;
    --radius:      8px;
    --radius-lg:   12px;
    --shadow:      0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md:   0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.05);
    --shadow-lg:   0 10px 25px rgba(0,0,0,0.12);
    --font:        'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

html, body {
    font-family: var(--font);
    font-size: 14px;
    line-height: 1.5;
    color: var(--dark);
    background: var(--light);
    height: 100%;
}

a { color: inherit; text-decoration: none; }
input, select, textarea, button { font-family: inherit; font-size: inherit; }
img { max-width: 100%; display: block; }

/* ============================================================
   Layout
   ============================================================ */

.app-wrapper {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-w);
    background: var(--dark);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 100;
    border-right: 1px solid var(--dark-3);
}

.sidebar-logo {
    padding: 24px 20px 20px;
    border-bottom: 1px solid var(--dark-3);
    text-align: center;
}
.sidebar-logo img { max-height: 60px; width: auto; margin: 0 auto; }
.logo-fallback {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--gold);
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow-y: auto;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius);
    color: #AAAAAA;
    font-weight: 500;
    font-size: 13.5px;
    transition: background 0.15s, color 0.15s;
    cursor: pointer;
}
.nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }
.nav-item:hover { background: var(--dark-3); color: var(--white); }
.nav-item.active { background: var(--dark-3); color: var(--gold); }
.nav-item.active svg { stroke: var(--gold); }

.sidebar-footer {
    padding: 16px 16px 20px;
    border-top: 1px solid var(--dark-3);
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.sidebar-user-email {
    font-size: 11px;
    color: var(--mid);
    word-break: break-all;
}
.logout-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #888;
    font-size: 13px;
    padding: 6px 8px;
    border-radius: var(--radius);
    transition: background 0.15s, color 0.15s;
}
.logout-btn:hover { background: var(--dark-3); color: var(--danger); }
.logout-btn svg { width: 16px; height: 16px; }

/* --- Main content --- */
.main-content {
    margin-left: var(--sidebar-w);
    flex: 1;
    padding: 32px 36px;
    min-width: 0;
    max-width: calc(100vw - var(--sidebar-w));
}

/* ============================================================
   Flash Messages
   ============================================================ */

.flash-container {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.flash {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 13.5px;
    font-weight: 500;
}
.flash-success { background: #DCFCE7; color: #166534; border: 1px solid #BBF7D0; }
.flash-danger  { background: #FEE2E2; color: #991B1B; border: 1px solid #FECACA; }
.flash-warning { background: #FEF9C3; color: #92400E; border: 1px solid #FEF08A; }
.flash-info    { background: #DBEAFE; color: #1E40AF; border: 1px solid #BFDBFE; }
.flash-close { background: none; border: none; cursor: pointer; font-size: 18px; opacity: 0.7; padding: 0 4px; }
.flash-close:hover { opacity: 1; }

/* ============================================================
   Page Header
   ============================================================ */

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}
.page-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}
.page-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--black);
    letter-spacing: -0.3px;
}
.page-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}
.back-link {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--mid);
    font-size: 13px;
    padding: 6px 10px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--white);
    transition: all 0.15s;
}
.back-link svg { width: 14px; height: 14px; }
.back-link:hover { color: var(--dark); border-color: var(--dark-4); }

/* ============================================================
   Cards
   ============================================================ */

.card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}
.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}
.card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--dark);
}
.card-body { padding: 20px; }
.card-body.p-0 { padding: 0; }
.header-actions { display: flex; align-items: center; gap: 8px; }

.max-w-2xl { max-width: 680px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-4 { margin-bottom: 16px; }
.ml-2 { margin-left: 8px; }

/* ============================================================
   Dashboard Stats
   ============================================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 8px;
}
.stat-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow);
}
.stat-card-alert { border-color: var(--warning); }
.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.stat-icon svg { width: 22px; height: 22px; }
.stat-icon-gold { background: #FBF4E2; }
.stat-icon-gold svg { stroke: var(--gold-dark); }
.stat-icon-blue { background: #EFF6FF; }
.stat-icon-blue svg { stroke: var(--blue); }
.stat-icon-orange { background: #FFF7ED; }
.stat-icon-orange svg { stroke: var(--warning); }
.stat-label { font-size: 12px; color: var(--mid); font-weight: 500; margin-bottom: 2px; }
.stat-value { font-size: 22px; font-weight: 700; color: var(--dark); letter-spacing: -0.5px; }

/* ============================================================
   Tables
   ============================================================ */

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13.5px;
}
.table thead tr {
    border-bottom: 2px solid var(--border);
    background: var(--lighter);
}
.table th {
    padding: 11px 16px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--mid);
}
.table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background: var(--lighter); }

.text-right { text-align: right !important; }

/* ============================================================
   Buttons
   ============================================================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 16px;
    border-radius: var(--radius);
    font-size: 13.5px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s;
    white-space: nowrap;
    text-decoration: none;
}
.btn svg { width: 15px; height: 15px; flex-shrink: 0; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary {
    background: var(--dark);
    color: var(--gold);
    border-color: var(--dark);
}
.btn-primary:hover { background: var(--black); color: var(--gold-light); }

.btn-outline {
    background: var(--white);
    color: var(--dark);
    border-color: var(--border);
}
.btn-outline:hover { border-color: var(--dark-4); background: var(--light); }

.btn-success {
    background: #16A34A;
    color: white;
    border-color: #16A34A;
}
.btn-success:hover { background: #15803D; }

.btn-danger {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
}
.btn-danger:hover { background: #DC2626; }

.btn-danger-ghost {
    background: none;
    color: var(--mid);
    border: none;
    padding: 4px 6px;
}
.btn-danger-ghost:hover { color: var(--danger); background: #FEE2E2; }

.btn-sm { padding: 7px 12px; font-size: 13px; }
.btn-xs { padding: 4px 10px; font-size: 12px; }
.btn-full { width: 100%; justify-content: center; }

/* ============================================================
   Badges
   ============================================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.2px;
}
.badge-draft  { background: #F3F4F6; color: #374151; }
.badge-sent   { background: #FEF9C3; color: #92400E; }
.badge-paid   { background: #DCFCE7; color: #166534; }
.badge-lg     { padding: 5px 14px; font-size: 13px; }

/* ============================================================
   Forms
   ============================================================ */

.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group label { font-size: 13px; font-weight: 500; color: var(--dark); }
.form-row { display: flex; gap: 16px; }
.form-row .form-group { flex: 1; }
.form-grid { display: flex; flex-direction: column; gap: 18px; }
.form-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
    margin-top: 4px;
}
.form-actions.justify-end { justify-content: flex-end; }
.form-hint { font-size: 11.5px; color: var(--mid); }

.form-control {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--white);
    color: var(--dark);
    font-size: 13.5px;
    transition: border-color 0.15s, box-shadow 0.15s;
    width: 100%;
    outline: none;
}
.form-control:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.15);
}
.form-control:disabled {
    background: var(--light);
    color: var(--mid);
    cursor: not-allowed;
}
.form-control-sm { padding: 6px 10px; font-size: 13px; }
textarea.form-control { resize: vertical; min-height: 70px; }
select.form-control { cursor: pointer; }

.required { color: var(--danger); }

/* ============================================================
   Search
   ============================================================ */

.search-form { display: flex; gap: 10px; align-items: center; }
.search-input-wrapper {
    position: relative;
    flex: 1;
}
.search-input-wrapper svg {
    position: absolute;
    left: 12px; top: 50%;
    transform: translateY(-50%);
    width: 16px; height: 16px;
    stroke: var(--mid);
    pointer-events: none;
}
.search-input {
    width: 100%;
    padding: 8px 12px 8px 38px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 13.5px;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.search-input:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.15);
}

/* ============================================================
   Filter Bar
   ============================================================ */

.filter-bar { display: flex; gap: 6px; flex-wrap: wrap; }
.filter-btn {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    border: 1px solid var(--border);
    background: var(--white);
    color: var(--mid);
    cursor: pointer;
    transition: all 0.15s;
    text-decoration: none;
}
.filter-btn:hover { border-color: var(--dark-4); color: var(--dark); }
.filter-btn.active { background: var(--dark); color: var(--gold); border-color: var(--dark); }

/* ============================================================
   Empty State
   ============================================================ */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 48px 24px;
    text-align: center;
    color: var(--mid);
    gap: 12px;
}
.empty-state svg { width: 48px; height: 48px; opacity: 0.4; }
.empty-state p { font-size: 14px; }

/* ============================================================
   Detail Layouts
   ============================================================ */

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}
.detail-list { display: flex; flex-direction: column; gap: 0; }
.detail-item {
    display: flex;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    gap: 16px;
}
.detail-item:last-child { border-bottom: none; }
.detail-item dt { font-size: 12.5px; color: var(--mid); font-weight: 500; min-width: 130px; flex-shrink: 0; }
.detail-item dd { font-size: 13.5px; color: var(--dark); font-weight: 500; }

/* Revenue display */
.revenue-display { display: flex; flex-direction: column; gap: 16px; }
.revenue-total { display: flex; flex-direction: column; gap: 4px; padding: 16px; background: var(--lighter); border-radius: var(--radius); }
.revenue-count { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border); }
.revenue-count:last-child { border-bottom: none; }
.revenue-label { font-size: 12px; color: var(--mid); font-weight: 500; text-transform: uppercase; letter-spacing: 0.3px; }
.revenue-value { font-size: 28px; font-weight: 700; color: var(--gold-dark); letter-spacing: -1px; }
.revenue-value-sm { font-size: 18px; font-weight: 700; color: var(--dark); }
.text-warning { color: var(--warning) !important; }

/* ============================================================
   Invoice Totals
   ============================================================ */

.invoice-totals {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    padding: 16px 20px;
    border-top: 2px solid var(--border);
    gap: 6px;
}
.totals-row {
    display: flex;
    gap: 40px;
    align-items: center;
    font-size: 13.5px;
    min-width: 260px;
    justify-content: space-between;
}
.totals-main {
    font-weight: 700;
    font-size: 16px;
    padding: 8px 12px;
    background: var(--lighter);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}
.totals-vat { color: var(--mid); font-size: 12.5px; padding: 0 12px; }

/* ============================================================
   Create Invoice Page
   ============================================================ */

.invoice-create-grid {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 20px;
    align-items: start;
}
.invoice-create-left { display: flex; flex-direction: column; gap: 0; }
.invoice-create-right { display: flex; flex-direction: column; gap: 0; }

.customer-preview {
    margin-top: 12px;
    padding: 12px 14px;
    background: var(--lighter);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.address-block { font-size: 13px; line-height: 1.7; color: var(--dark); }

.items-table .form-control { border-color: transparent; background: transparent; }
.items-table .form-control:focus { border-color: var(--gold); background: var(--white); }
.items-table td { padding: 6px 10px; }
.items-table th { padding: 10px 10px; }

.items-add-row {
    padding: 10px 16px;
    border-top: 1px solid var(--border);
    background: var(--lighter);
}

/* ============================================================
   Modals
   ============================================================ */

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.modal {
    background: var(--white);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 520px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}
.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 22px;
    border-bottom: 1px solid var(--border);
}
.modal-header h3 { font-size: 16px; font-weight: 600; }
.modal-close {
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--mid);
    padding: 0 4px;
    line-height: 1;
}
.modal-close:hover { color: var(--dark); }
.modal-body { padding: 20px 22px; }
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.code-hint {
    font-family: 'Courier New', monospace;
    font-size: 12px;
    background: var(--lighter);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 14px;
    color: var(--dark-4);
    word-break: break-all;
}

/* ============================================================
   Utility
   ============================================================ */

.font-medium { font-weight: 600; }
.text-secondary { color: var(--mid); }
.mono { font-family: 'Courier New', monospace; font-size: 12.5px; letter-spacing: 0.5px; }
.gold { color: var(--gold-dark); }
.link-primary { color: var(--dark); font-weight: 600; }
.link-primary:hover { color: var(--gold-dark); text-decoration: underline; }
.link-secondary { color: var(--mid); }
.link-secondary:hover { color: var(--dark); }
.action-buttons { display: flex; align-items: center; gap: 6px; }

/* Checkbox for pay */
.pay-checkbox {
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--gold-dark);
}

/* ============================================================
   Login Page
   ============================================================ */

.login-body {
    background: var(--dark);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.login-wrapper {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}
.login-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}
.login-logo {
    text-align: center;
    margin-bottom: 24px;
}
.login-logo img { max-height: 80px; max-width: 200px; margin: 0 auto; }
.login-logo-fallback {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 3px;
    color: var(--dark);
}
.login-logo-fallback .gold { color: var(--gold); }
.login-title {
    font-size: 20px;
    font-weight: 700;
    text-align: center;
    color: var(--dark);
    margin-bottom: 4px;
}
.login-subtitle {
    font-size: 13.5px;
    color: var(--mid);
    text-align: center;
    margin-bottom: 24px;
}
.login-error {
    background: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FECACA;
    border-radius: var(--radius);
    padding: 10px 14px;
    font-size: 13.5px;
    margin-bottom: 16px;
    font-weight: 500;
}
.login-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.login-form label {
    font-size: 13px;
    font-weight: 500;
    color: var(--dark);
    display: block;
    margin-bottom: 5px;
}
.login-form input {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 14px;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.login-form input:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.15);
}
.login-form .btn-primary {
    padding: 11px;
    font-size: 14.5px;
    font-weight: 600;
    margin-top: 4px;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 900px) {
    :root { --sidebar-w: 60px; }

    .nav-item span,
    .sidebar-logo img,
    .sidebar-user-email,
    .logout-btn span { display: none; }

    .nav-item { justify-content: center; padding: 10px; }
    .logo-fallback { display: none !important; }
    .sidebar-logo { padding: 14px 8px; }
    .sidebar-logo::after { content: "EB"; color: var(--gold); font-weight: 700; font-size: 18px; }

    .logout-btn { justify-content: center; }
    .main-content { padding: 20px 16px; }
    .detail-grid { grid-template-columns: 1fr; }
    .invoice-create-grid { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
    .stats-grid { grid-template-columns: 1fr; }
    .form-row { flex-direction: column; }
    .page-header { flex-direction: column; align-items: flex-start; }
}