/* =========================================
   1. VARIABLES & RESET
   ========================================= */
:root {
    /* Brand Palette */
    --brand-primary: #DC2626;       /* Red-600 */
    --brand-secondary: #F97316;     /* Orange-500 */
    --brand-gradient: linear-gradient(135deg, #F97316 0%, #DC2626 100%);
    
    /* Backgrounds */
    --bg-body: #F8FAFC;             /* Slate-50 */
    --bg-surface: #FFFFFF;
    
    /* Text Colors */
    --text-main: #0F172A;           /* Slate-900 */
    --text-muted: #64748B;          /* Slate-500 */
    --text-light: #94A3B8;          /* Slate-400 */
    
    /* Borders */
    --border-color: #E2E8F0;        /* Slate-200 */
    
    /* Status Colors */
    --green: #166534; --green-bg: #DCFCE7;
    --red: #DC2626; --red-bg: #FEE2E2;
    --blue: #1E40AF; --blue-bg: #DBEAFE;
    
    /* Z-Index Layers */
    --z-header: 40;
    --z-sidebar: 50;
    --z-modal-base: 2000;
    --z-dropdown: 3000;
    --z-modal-stack: 3100;
    --z-auth: 9999;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    -webkit-tap-highlight-color: transparent;
}

body {
    display: flex;
    height: 100vh;
    background: var(--bg-body);
    color: var(--text-main);
    overflow: hidden;
}

/* =========================================
   2. AUTH OVERLAY (LOGIN SCREEN)
   ========================================= */
.auth-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #F8FAFC;
    z-index: var(--z-auth);
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-box {
    background: white;
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
    text-align: center;
    width: 400px;
    border: 1px solid var(--border-color);
}

.auth-box img {
    transition: transform 0.3s ease;
}

.auth-box img:hover {
    transform: scale(1.05);
}

/* =========================================
   3. SIDEBAR
   ========================================= */
.sidebar {
    width: 250px;
    background: var(--bg-surface);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: var(--z-sidebar);
    flex-shrink: 0;
}

.brand-box {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.brand-info h1 {
    font-size: 16px;
    font-weight: 800;
    letter-spacing: -0.3px;
    color: var(--text-main);
    line-height: 1.2;
}

.brand-info span {
    font-size: 10px;
    background: var(--brand-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
    text-transform: uppercase;
}

.nav {
    padding: 20px 12px;
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
    overflow-y: auto;
}

.nav-btn {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    color: var(--text-muted);
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    transition: all 0.2s ease;
}

.nav-btn:hover { background: #F1F5F9; color: var(--text-main); }
.nav-btn.active-nav { background: #FFF7ED; color: var(--brand-secondary); }

/* Sidebar Footer & Links */
.sidebar-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    background: #F8FAFC;
    font-size: 11px;
}

.sidebar-footer a {
    transition: color 0.2s;
}

.sidebar-footer a:hover {
    color: var(--brand-primary) !important;
    text-decoration: underline;
}

/* =========================================
   4. MAIN LAYOUT
   ========================================= */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    width: 100%;
}

.header {
    height: 72px;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 32px;
    flex-shrink: 0;
    z-index: var(--z-header);
}

#viewTitle { font-size: 20px; font-weight: 700; color: var(--text-main); }

.date-input {
    border: none;
    background: transparent;
    font-size: 12px;
    font-weight: 700;
    color: var(--text-main);
    font-family: inherit;
    cursor: pointer;
    outline: none;
}

/* =========================================
   5. VIEWS & DASHBOARD
   ========================================= */
.view-section {
    display: none;
    flex-direction: column;
    height: 100%;
    padding: 24px 32px;
    overflow-y: auto;
    width: 100%;
}

.view-section.active {
    display: flex;
    animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 24px;
}

.metric-card {
    background: var(--bg-surface);
    padding: 24px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.metric-card label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    display: block;
    margin-bottom: 8px;
}

.m-val { font-size: 24px; font-weight: 800; color: var(--text-main); }

/* =========================================
   6. TABLES
   ========================================= */
.table-container {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    margin-top: 10px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    min-width: 800px;
}

th {
    text-align: left;
    padding: 14px 20px;
    background: #F8FAFC;
    color: var(--text-muted);
    font-weight: 700;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
    color: var(--text-main);
}

tr:hover td { background-color: #F8FAFC; }

.clickable-name {
    color: var(--blue);
    font-weight: 600;
    cursor: pointer;
}
.clickable-name:hover { text-decoration: underline; }

/* Control Bars */
.control-bar { display: flex; gap: 10px; margin-bottom: 15px; align-items: center; justify-content: space-between; }
.control-bar input { width: 250px; border-radius: 8px; border: 1px solid var(--border-color); padding: 8px 12px; }
.chips-container { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }

/* =========================================
   7. CUSTOM SEARCHABLE SELECT
   ========================================= */
.custom-select { position: relative; width: 100%; }

.select-trigger {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 13px;
    background: white;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    color: var(--text-main);
}

.select-options {
    position: absolute;
    top: 110%;
    left: 0;
    width: 100%;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    z-index: var(--z-dropdown);
    max-height: 280px;
    overflow-y: auto;
    display: none;
    animation: slideDown 0.1s ease-out;
}

@keyframes slideDown { from { opacity: 0; transform: translateY(-5px); } to { opacity: 1; transform: translateY(0); } }

.select-options.show { display: block; }

.search-box {
    padding: 10px;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    background: white;
    z-index: 2;
    display: flex;
    gap: 8px;
}

.search-box input {
    flex: 1;
    padding: 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 12px;
    outline: none;
}

.add-new-btn {
    padding: 6px 12px;
    background: var(--brand-gradient);
    color: white;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    white-space: nowrap;
}

.option-group {
    padding: 8px 12px;
    font-size: 10px;
    font-weight: 800;
    color: var(--text-muted);
    background: #F1F5F9;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.option-item {
    padding: 10px 12px;
    font-size: 13px;
    cursor: pointer;
    border-bottom: 1px solid #f8fafc;
    transition: background 0.1s;
    color: var(--text-main);
}
.option-item:hover { background: #FFF7ED; color: var(--brand-secondary); }

/* =========================================
   8. FORMS & UI ELEMENTS
   ========================================= */
.form-section {
    background: #F8FAFC;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.section-title {
    font-size: 11px;
    font-weight: 800;
    color: var(--brand-primary);
    text-transform: uppercase;
    margin-bottom: 12px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
}

input, textarea, select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 13px;
    outline: none;
    background: white;
    transition: border 0.2s;
    color: var(--text-main);
}
input:focus, textarea:focus { border-color: var(--brand-secondary); }

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 13px;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s;
}
.btn-primary { background: var(--brand-gradient); color: white; box-shadow: 0 4px 6px rgba(220, 38, 38, 0.2); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 8px rgba(220, 38, 38, 0.3); }
.btn-secondary { background: white; border: 1px solid var(--border-color); color: var(--text-main); }
.btn-secondary:hover { background: #F8FAFC; }
.btn-sm { padding: 6px 12px; font-size: 11px; }

/* Status Badges */
.badge {
    font-size: 10px;
    font-weight: 700;
    padding: 4px 8px;
    border-radius: 6px;
    text-transform: uppercase;
}
.st-Confirmed { background: var(--green-bg); color: var(--green); }
.st-Cancelled { background: var(--red-bg); color: var(--red); }
.st-Rescheduled { background: var(--blue-bg); color: var(--blue); }

/* Balance Chips */
.balance-chip {
    display: none;
    margin-top: 8px;
    padding: 8px 10px;
    border-radius: 6px;
    font-size: 11px;
    border: 1px solid var(--border-color);
    background: white;
}
.balance-chip b { font-weight: 700; color: var(--text-main); }
.overdue-tag { color: var(--brand-primary); font-weight: 800; margin-left: 5px; text-transform: uppercase; font-size: 10px; }

/* Summary Box */
.summary-box {
    background: #0F172A;
    color: white;
    padding: 20px;
    border-radius: 12px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-top: 20px;
}
.sum-val { font-size: 18px; font-weight: 800; margin-top: 4px; }

/* =========================================
   9. MODALS (STACKING LOGIC)
   ========================================= */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.6);
    z-index: var(--z-modal-base);
    display: none;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.modal-overlay.open { display: flex; animation: fadeIn 0.2s ease-out; }

.modal-box {
    background: white;
    width: 850px;
    border-radius: 16px;
    max-height: 95vh;
    overflow-y: auto;
    padding: 30px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    position: relative;
    animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Stack Party Modal ON TOP of Booking Modal */
#modalParty { z-index: var(--z-modal-stack); }

/* =========================================
   10. PRINT STYLES
   ========================================= */
.print-only { display: none; }

@media print {
    body { background: white; color: black; }
    .sidebar, .header, .btn, .no-print, .search-box, .add-new-btn, .modal-overlay, #auth-overlay { display: none !important; }
    
    .main { margin: 0; padding: 0; width: 100%; overflow: visible; }
    .view-section { display: block !important; padding: 0; overflow: visible; height: auto; }
    
    .table-container { border: none; box-shadow: none; margin-top: 0; }
    table { width: 100%; border: 1px solid #000; font-size: 10px; }
    th { background: #EEE !important; color: #000 !important; -webkit-print-color-adjust: exact; border: 1px solid #000; }
    td { border: 1px solid #CCC; color: #000; padding: 8px; }
    
    .print-only { display: block !important; }
}

/* =========================================
   11. RESPONSIVE
   ========================================= */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .header { padding: 0 16px; }
    .metrics-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .modal-box { width: 95%; padding: 20px; }
    .summary-box { grid-template-columns: 1fr 1fr; }
    .auth-box { width: 90%; }
}