/* ============================================
   FINMODELS - Internal Financial Modeling Tool
   ============================================ */

:root {
    --bg-dark: #0f1117;
    --bg-card: #1a1d26;
    --bg-input: #242833;
    --bg-hover: #2a2f3d;
    
    --burgundy: #6B1C2A;
    --burgundy-light: #8B2C3A;
    --gold: #C9A962;
    --gold-light: #D4BC7D;
    
    --text-primary: #f0f2f5;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --border: #2d3344;
    --border-light: #3d4455;
    
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    --font-sans: 'IBM Plex Sans', -apple-system, sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
    
    --sidebar-width: 260px;
    --header-height: 70px;
}

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

body {
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
    background: var(--bg-dark);
    min-height: 100vh;
}

/* Auth Gate */
.auth-gate {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-dark);
    z-index: 9999;
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 3rem;
    width: 100%;
    max-width: 400px;
    text-align: center;
}

.auth-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.auth-logo svg {
    width: 32px;
    height: 32px;
    color: var(--gold);
}

.auth-logo span {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.auth-card h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.auth-card > p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.auth-card .form-group {
    text-align: left;
    margin-bottom: 1rem;
}

.auth-card label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.auth-card input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9375rem;
}

.auth-card input:focus {
    outline: none;
    border-color: var(--gold);
}

.auth-card .btn {
    width: 100%;
    margin-top: 1rem;
}

.auth-footer {
    margin-top: 1.5rem;
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn svg {
    width: 16px;
    height: 16px;
}

.btn-primary {
    background: var(--burgundy);
    color: white;
}

.btn-primary:hover {
    background: var(--burgundy-light);
}

.btn-secondary {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

.btn-sm {
    padding: 0.5rem 0.875rem;
    font-size: 0.8125rem;
}

/* App Layout */
.app {
    display: flex;
    min-height: 100vh;
}

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

.sidebar-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo svg {
    width: 28px;
    height: 28px;
    color: var(--gold);
}

.logo span {
    font-size: 1.25rem;
    font-weight: 600;
}

.sidebar-nav {
    flex: 1;
    padding: 1rem 0;
    overflow-y: auto;
}

.nav-section {
    padding: 0.5rem 1rem;
}

.nav-label {
    display: block;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    padding: 0.75rem 0.75rem 0.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 0.75rem;
    color: var(--text-secondary);
    border-radius: 6px;
    transition: all 0.2s ease;
    text-decoration: none;
}

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

.nav-item.active {
    background: rgba(201, 169, 98, 0.1);
    color: var(--gold);
}

.nav-item svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    stroke-width: 1.5;
    fill: none;
}

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.user-avatar {
    width: 36px;
    height: 36px;
    background: var(--burgundy);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8125rem;
    font-weight: 600;
    color: white;
}

.user-name {
    display: block;
    font-weight: 500;
    font-size: 0.875rem;
}

.user-role {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.btn-logout {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.2s;
}

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

.btn-logout svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
    stroke-width: 1.5;
    fill: none;
}

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

.main-header {
    height: var(--header-height);
    padding: 0 2rem;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.header-left h1 {
    font-size: 1.25rem;
    font-weight: 600;
}

.header-badge {
    padding: 0.25rem 0.5rem;
    background: rgba(201, 169, 98, 0.15);
    color: var(--gold);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 4px;
}

.header-actions {
    display: flex;
    gap: 0.75rem;
}

/* Views */
.view {
    display: none;
    padding: 2rem;
}

.view.active {
    display: block;
}

/* Model Grid */
.model-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

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

/* Panels */
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.panel-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.panel-header h3 {
    font-size: 0.9375rem;
    font-weight: 600;
}

.panel-tabs {
    display: flex;
    gap: 0.25rem;
}

.tab {
    padding: 0.375rem 0.75rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.8125rem;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s;
}

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

.tab.active {
    background: var(--bg-input);
    color: var(--text-primary);
}

.panel-body {
    padding: 1.25rem;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Forms */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.form-row:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.375rem;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.625rem 0.75rem;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--gold);
}

.form-group select {
    font-family: var(--font-sans);
}

/* Input Tables */
.input-table {
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
}

.table-header {
    display: grid;
    grid-template-columns: 1fr 1.5fr 1fr;
    gap: 1rem;
    padding: 0.625rem 0.75rem;
    background: var(--bg-input);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table-row {
    display: grid;
    grid-template-columns: 1fr 1.5fr 1fr;
    gap: 1rem;
    padding: 0.5rem 0.75rem;
    border-top: 1px solid var(--border);
    align-items: center;
}

.table-row span {
    font-size: 0.8125rem;
}

.table-row input {
    padding: 0.375rem 0.5rem;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    text-align: right;
}

.calculated {
    color: var(--text-secondary);
    font-family: var(--font-mono);
    text-align: right;
}

.calculated.positive {
    color: var(--success);
}

.calculated.negative {
    color: var(--danger);
}

/* WACC Result */
.wacc-result {
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(201, 169, 98, 0.1);
    border: 1px solid rgba(201, 169, 98, 0.3);
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.wacc-result .label {
    font-weight: 500;
    color: var(--gold);
}

.wacc-result .value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--gold);
}

/* Results Grid */
.results-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.result-card {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1rem;
}

.result-card.primary {
    background: var(--burgundy);
    border-color: var(--burgundy-light);
    grid-column: 1 / -1;
}

.result-card.primary .result-label {
    color: rgba(255,255,255,0.7);
}

.result-card.primary .result-value {
    color: white;
    font-size: 2rem;
}

.result-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.result-value {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Sensitivity Table */
.sensitivity-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.sensitivity-table {
    overflow-x: auto;
}

.sensitivity-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
}

.sensitivity-table th,
.sensitivity-table td {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border);
    text-align: center;
}

.sensitivity-table th {
    background: var(--bg-input);
    font-weight: 500;
}

.sensitivity-table td.highlight {
    background: rgba(201, 169, 98, 0.15);
    font-weight: 600;
}

/* FCF Table */
.fcf-table {
    overflow-x: auto;
}

.fcf-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
    font-family: var(--font-mono);
}

.fcf-table th,
.fcf-table td {
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--border);
    text-align: right;
}

.fcf-table th {
    background: var(--bg-input);
    text-align: left;
    font-family: var(--font-sans);
    font-weight: 500;
}

.fcf-table th:first-child {
    text-align: left;
}

.fcf-table td:first-child {
    text-align: left;
    font-family: var(--font-sans);
}

.fcf-table .section-row {
    background: var(--bg-input);
    font-weight: 600;
}

.fcf-table .total-row {
    background: rgba(201, 169, 98, 0.1);
    font-weight: 600;
    color: var(--gold);
}

/* Comps Table */
.comps-table-wrapper {
    overflow-x: auto;
}

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

.comps-table th,
.comps-table td {
    padding: 0.75rem;
    border: 1px solid var(--border);
    text-align: right;
}

.comps-table th {
    background: var(--bg-input);
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.comps-table input {
    width: 100%;
    padding: 0.375rem 0.5rem;
    background: var(--bg-dark);
    border: 1px solid transparent;
    border-radius: 3px;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    text-align: right;
}

.comps-table input.comp-name {
    text-align: left;
    font-family: var(--font-sans);
}

.comps-table input:focus {
    border-color: var(--gold);
    outline: none;
}

.comps-table tfoot td {
    background: var(--bg-input);
}

.btn-delete {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
}

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

/* Implied Values */
.implied-values {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-top: 1.5rem;
}

.implied-card {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1rem;
}

.implied-card .label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.implied-card .value {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--success);
}

/* Deals Board */
.deals-container {
    height: calc(100vh - var(--header-height) - 4rem);
}

.deals-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.deals-filters {
    display: flex;
    gap: 1rem;
}

.deals-filters select,
.deals-filters input {
    padding: 0.625rem 1rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.875rem;
}

.deals-board {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1rem;
    height: calc(100% - 60px);
}

.stage-column {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
}

.stage-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stage-name {
    font-weight: 600;
    font-size: 0.875rem;
}

.stage-count {
    background: var(--bg-input);
    padding: 0.125rem 0.5rem;
    border-radius: 999px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.stage-deals {
    padding: 0.75rem;
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.deal-card {
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 1rem;
    cursor: grab;
    transition: all 0.2s;
}

.deal-card:hover {
    border-color: var(--gold);
}

.deal-card.priority {
    border-left: 3px solid var(--gold);
}

.deal-name {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.deal-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.8125rem;
    margin-bottom: 0.75rem;
}

.deal-value {
    color: var(--success);
    font-family: var(--font-mono);
}

.deal-industry {
    color: var(--text-muted);
}

.deal-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.deal-owner {
    width: 24px;
    height: 24px;
    background: var(--burgundy);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.625rem;
    font-weight: 600;
    color: white;
}

/* Calculator */
.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.calc-section {
    margin-bottom: 2rem;
}

.calc-section:last-child {
    margin-bottom: 0;
}

.calc-section h4 {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--gold);
}

.calc-result {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.calc-result .value {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--success);
}

.structure-breakdown {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.breakdown-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem;
    background: var(--bg-input);
    border-radius: 4px;
}

.breakdown-item .value {
    font-family: var(--font-mono);
    font-weight: 500;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* Responsive */
@media (max-width: 1400px) {
    .model-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .deals-board {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1024px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .model-grid {
        grid-template-columns: 1fr;
    }
    
    .results-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .calculator-grid {
        grid-template-columns: 1fr;
    }
}