/* Import Modern Typography */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    --bg-base: #0f172a;
    --bg-surface: #1e293b;
    --bg-surface-glass: rgba(30, 41, 59, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-glow: rgba(99, 102, 241, 0.2);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --color-primary: #6366f1; /* Indigo */
    --color-primary-glow: rgba(99, 102, 241, 0.4);
    --color-secondary: #06b6d4; /* Cyan */
    --color-secondary-glow: rgba(6, 182, 212, 0.4);
    --color-accent: #a855f7; /* Violet */
    --color-danger: #ef4444;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    
    --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    --gradient-accent: linear-gradient(135deg, var(--color-accent), var(--color-primary));
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout Semantics */
    --sidebar-bg: rgba(15, 23, 42, 0.85);
    --table-header-bg: rgba(30, 41, 59, 0.95);
    --table-header-text: #94a3b8;
    --table-total-row-bg: rgba(30, 41, 59, 0.6);
    --table-hover-bg: rgba(255, 255, 255, 0.02);
    --mini-card-bg: rgba(30, 41, 59, 0.4);
    --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --bottom-bar-bg: rgba(15, 23, 42, 0.9);
    --toast-bg: rgba(30, 41, 59, 0.9);
}

body.light-theme {
    --bg-base: #f1f5f9;
    --bg-surface: #ffffff;
    --bg-surface-glass: rgba(255, 255, 255, 0.75);
    --border-color: rgba(15, 23, 42, 0.15);
    --border-color-glow: rgba(99, 102, 241, 0.3);
    
    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #57606a;
    
    --color-primary-glow: rgba(99, 102, 241, 0.15);
    --color-secondary-glow: rgba(6, 182, 212, 0.15);
    
    /* Layout Semantics (Balanced for Light Theme) */
    --sidebar-bg: #ffffff;
    --table-header-bg: #cbd5e1;
    --table-header-text: #0f172a;
    --table-total-row-bg: #e2e8f0;
    --table-hover-bg: rgba(15, 23, 42, 0.03);
    --mini-card-bg: #f1f5f9;
    --card-shadow: 0 8px 32px 0 rgba(15, 23, 42, 0.06);
    --bottom-bar-bg: rgba(255, 255, 255, 0.9);
    --toast-bg: rgba(255, 255, 255, 0.95);
}

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

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-surface);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
}

/* Glassmorphism Panel Utility */
.glass-panel {
    background: var(--bg-surface-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    transition: var(--transition-smooth);
}

.glass-panel:hover {
    border-color: var(--border-color-glow);
}

/* Main Layout Structure */
#app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Top Navigation Bar */
#top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 32px;
    background: var(--sidebar-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    height: 75px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-logo {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 20px;
    box-shadow: 0 4px 14px var(--color-primary-glow);
}

.app-title-text h1 {
    font-size: 1.2rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
    line-height: 1.1;
}

.app-title-text p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
    margin-top: 2px;
}

.nav-menu {
    display: flex;
    flex-direction: row;
    gap: 12px;
    align-items: center;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
    font-size: 0.9rem;
}

.nav-item:hover, .nav-item.active {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.2);
}

.nav-item.active i {
    color: var(--color-secondary);
}

/* Editor Tab Navigation System */
.editor-tabs {
    display: flex;
    gap: 6px;
    background: var(--bg-surface-glass);
    border: 1px solid var(--border-color);
    padding: 4px;
    border-radius: 10px;
}

.tab-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 8px;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    gap: 8px;
}

.tab-btn:hover {
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--color-primary);
    color: #ffffff !important;
    box-shadow: 0 4px 12px var(--color-primary-glow);
}

/* Tab Content Visibility Management */
.tab-content {
    display: none;
    width: 100%;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Main Content Area */
#main-content {
    flex-grow: 1;
    min-width: 0;
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.section-header h2 {
    font-size: 1.8rem;
    font-weight: 700;
}

/* Primary Button Styling */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 10px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-primary);
    box-shadow: 0 4px 14px var(--color-primary-glow);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px var(--color-primary-glow);
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--text-muted);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-danger);
    border-color: rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.3);
}

.btn-success {
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
    border-color: rgba(16, 185, 129, 0.3);
}

.btn-success:hover {
    background: rgba(16, 185, 129, 0.3);
}

/* Dashboard View Styles */
.dashboard-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.kpi-card {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
}

.kpi-icon {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.kpi-card:nth-child(2) .kpi-icon {
    background: rgba(6, 182, 212, 0.1);
    color: var(--color-secondary);
}

.kpi-card:nth-child(3) .kpi-icon {
    background: rgba(168, 85, 247, 0.1);
    color: var(--color-accent);
}

.kpi-details h3 {
    font-size: 0.85rem;
    text-transform: uppercase;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
}

.kpi-details .kpi-value {
    font-size: 1.6rem;
    font-weight: 700;
    margin-top: 4px;
    font-family: var(--font-heading);
}

/* Dashboard Bottom Grid */
.dashboard-bottom-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 24px;
}

/* Form Listing Table */
.data-table-container {
    padding: 24px;
}

.data-table-container h3 {
    margin-bottom: 20px;
}

.custom-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.custom-table th {
    padding: 16px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    border-bottom: 1px solid var(--border-color);
}

.custom-table td {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

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

.custom-table tbody tr {
    transition: var(--transition-smooth);
}

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

.table-actions {
    display: flex;
    gap: 8px;
}

.btn-icon {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: var(--transition-smooth);
}

.btn-icon:hover {
    color: var(--text-primary);
    border-color: var(--color-primary);
    box-shadow: 0 0 8px var(--color-primary-glow);
}

.btn-icon.delete:hover {
    color: var(--color-danger);
    border-color: var(--color-danger);
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.2);
}

/* Chart Card Panel */
.chart-panel {
    padding: 24px;
}

/* Form Editor Styling */
.editor-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.agency-profile-panel {
    padding: 24px;
}

.agency-profile-panel h3 {
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

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

@media (max-width: 992px) {
    .input-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .input-grid {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control {
    background: var(--bg-base);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 14px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: var(--transition-smooth);
}

.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 8px var(--color-primary-glow);
    outline: none;
}

/* Interactive Excel Grid Panel */
.items-grid-panel {
    padding: 24px;
    min-height: 550px;
    display: flex;
    flex-direction: column;
}

.items-grid-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.excel-grid-container {
    width: 100%;
    overflow-x: auto;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    flex-grow: 1;
    min-height: 400px;
}

.excel-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 2000px; /* Force scrollbar to fit columns nicely */
}

.excel-table th {
    background: var(--table-header-bg);
    padding: 12px 8px;
    border: 1px solid var(--border-color);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--table-header-text);
    text-align: center;
}

.excel-table td {
    padding: 8px 6px;
    border: 1px solid var(--border-color);
    font-size: 0.85rem;
    vertical-align: middle;
}

.excel-table tr.total-row td {
    background: var(--table-total-row-bg);
    font-weight: 700;
}

.excel-table .col-no { width: 50px; text-align: center; color: var(--text-muted); }
.excel-table .col-unspsc { width: 130px; position: relative; }
.excel-table .col-desc { width: 380px; position: relative; }
.excel-table .col-spec { width: 280px; }
.excel-table .col-unit { width: 100px; }
.excel-table .col-month { width: 60px; text-align: center; }
.excel-table .col-q-qty { width: 70px; text-align: center; font-weight: 600; background: rgba(255,255,255,0.01); }
.excel-table .col-q-amt { width: 100px; text-align: right; font-weight: 600; background: rgba(255,255,255,0.02); }
.excel-table .col-tot-qty { width: 80px; text-align: center; font-weight: 700; background: rgba(99, 102, 241, 0.05); }
.excel-table .col-price { width: 90px; text-align: right; }
.excel-table .col-tot-amt { width: 110px; text-align: right; font-weight: 700; background: rgba(6, 182, 212, 0.05); }
.excel-table .col-action { width: 50px; text-align: center; }

/* In-cell Editable Inputs */
.cell-input {
    width: 100%;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-primary);
    padding: 6px 8px;
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    transition: var(--transition-smooth);
}

.cell-input:hover {
    background: rgba(255,255,255,0.02);
    border-color: rgba(255,255,255,0.1);
}

.cell-input:focus {
    background: var(--bg-base);
    border-color: var(--color-primary);
    outline: none;
}

.cell-input.num {
    text-align: center;
    padding-left: 2px;
    padding-right: 2px;
}

/* Hide number input spinners (up/down arrows) */
.cell-input[type="number"]::-webkit-outer-spin-button,
.cell-input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
.cell-input[type="number"] {
    -moz-appearance: textfield;
}

.cell-input.price {
    text-align: right;
}

/* Autocomplete Dropdown Search */
.autocomplete-wrapper {
    position: relative;
}

.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border: 1px solid var(--color-primary);
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    z-index: 1000;
    max-height: 250px;
    overflow-y: auto;
    display: none;
}

.autocomplete-item {
    padding: 10px 14px;
    cursor: pointer;
    font-size: 0.85rem;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.autocomplete-item:hover {
    background: rgba(99, 102, 241, 0.15);
    color: var(--text-primary);
}

.autocomplete-item .unspsc-tag {
    font-size: 0.75rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin-right: 8px;
    background: rgba(6, 182, 212, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
}

/* Bottom Editor Bar */
.bottom-editor-bar {
    position: sticky;
    bottom: 0;
    width: 100%;
    padding: 20px 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    margin-top: 24px;
    background: var(--bottom-bar-bg);
    backdrop-filter: blur(12px);
    border-radius: 16px 16px 0 0;
}

.total-summary-display {
    display: flex;
    gap: 32px;
}

.summary-item {
    display: flex;
    flex-direction: column;
}

.summary-item .label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.summary-item .value {
    font-size: 1.3rem;
    font-weight: 700;
    font-family: var(--font-heading);
}

.summary-item.grand-total .value {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.6rem;
}

.editor-actions {
    display: flex;
    gap: 12px;
}

/* Signatories Section in Editor */
.signatories-panel {
    padding: 24px;
}

.signatories-panel h3 {
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

/* Utility classes */
.hidden {
    display: none !important;
}

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

.text-center {
    text-align: center;
}

.currency-symbol::before {
    content: "₱ ";
    color: var(--text-secondary);
}

/* Toast Notification styling */
#toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.toast {
    background: var(--toast-bg);
    border-left: 4px solid var(--color-primary);
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
    color: var(--text-primary);
    padding: 14px 20px;
    border-radius: 4px;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s forwards;
    backdrop-filter: blur(8px);
}

.toast.success {
    border-left-color: var(--color-success);
}

.toast.error {
    border-left-color: var(--color-danger);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Responsiveness Adjustments */
@media (max-width: 992px) {
    #top-nav {
        padding: 0 20px;
    }
    
    #main-content {
        padding: 20px;
    }
    
    .dashboard-bottom-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    #top-nav {
        flex-direction: column;
        height: auto;
        padding: 12px;
        gap: 12px;
        align-items: center;
        justify-content: center;
    }
    
    .nav-menu {
        width: 100%;
        justify-content: space-around;
        gap: 8px;
    }
    
    .nav-item {
        padding: 8px 12px;
        font-size: 0.8rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }
    
    .editor-tabs {
        width: 100%;
        justify-content: space-between;
    }
    
    .tab-btn {
        flex-grow: 1;
        justify-content: center;
        padding: 8px 10px;
        font-size: 0.8rem;
    }
    
    .bottom-editor-bar {
        flex-direction: column;
        gap: 16px;
        align-items: stretch;
        padding: 16px;
    }
    
    .total-summary-display {
        grid-template-columns: repeat(2, 1fr);
        display: grid;
        gap: 12px;
    }
    
    .editor-actions {
        width: 100%;
        justify-content: space-between;
    }
    
    .editor-actions .btn {
        flex-grow: 1;
        text-align: center;
        justify-content: center;
    }
}