/* ==========================================================================
   AXIOM QUANT — MARKOWITZ OPTIMIZER STYLES (SPECTRAL EQUILIBRIUM)
   ========================================================================== */

:root {
    --bg-color: #06070B;
    --cyan-accent: #00F0FF;
    --gold-accent: #E5B958;
    --white-text: #FFFFFF;
    --slate-text: #94A3B8;
    --muted-text: #475569;
    --grid-line: rgba(30, 41, 59, 0.4);
    --card-bg: rgba(11, 15, 25, 0.8);
    --glass-border: rgba(0, 240, 255, 0.15);
    --font-mono: 'Fira Code', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html, body {
    width: 100%;
    min-height: 100vh;
    background-color: var(--bg-color);
    color: var(--white-text);
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
}

/* Background Canvas */
#backgroundGridCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
}

/* Page Shell */
.page-shell {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 20px 32px;
}

.mono-label { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.15em; color: var(--slate-text); }
.gold-text { color: var(--gold-accent); }
.cyan-text { color: var(--cyan-accent); }
.muted { color: var(--muted-text); }

/* Header Bar */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--grid-line);
    margin-bottom: 24px;
}

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

.brand-link {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--white-text);
}

.crest { color: var(--gold-accent); font-size: 18px; }

.brand-name {
    font-family: var(--font-mono);
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.15em;
}

.route-tag {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--cyan-accent);
    padding: 2px 8px;
    background: rgba(0, 240, 255, 0.1);
    border-radius: 3px;
}

.top-nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

.nav-link {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--slate-text);
    text-decoration: none;
    letter-spacing: 0.1em;
    transition: color 0.2s ease;
}

.nav-link:hover { color: var(--cyan-accent); }

.status-badge {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--gold-accent);
    padding: 3px 8px;
    border: 1px solid var(--gold-accent);
    border-radius: 3px;
}

/* Layout Grid */
.markowitz-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 24px;
    flex-grow: 1;
}

/* Panels & Cards */
.controls-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.panel-card {
    background: var(--card-bg);
    border: 1px solid var(--grid-line);
    border-radius: 6px;
    padding: 20px;
    backdrop-filter: blur(12px);
}

.card-label {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.15em;
    color: var(--slate-text);
    margin-bottom: 14px;
}

/* Preset Buttons */
.preset-buttons {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.preset-btn {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--grid-line);
    color: var(--slate-text);
    padding: 10px 12px;
    font-family: var(--font-mono);
    font-size: 11px;
    text-align: left;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.25s ease;
}

.preset-btn:hover {
    border-color: rgba(0, 240, 255, 0.4);
    color: var(--cyan-accent);
}

.preset-btn.active {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--cyan-accent);
    color: var(--white-text);
    font-weight: 600;
    box-shadow: 0 0 12px rgba(0, 240, 255, 0.2);
}

/* Controls Forms */
.field-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.field-row label {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--muted-text);
}

.input-with-unit {
    display: flex;
    align-items: center;
    gap: 4px;
    background: #020305;
    border: 1px solid var(--grid-line);
    border-radius: 3px;
    padding: 4px 8px;
}

.input-with-unit input {
    width: 45px;
    background: transparent;
    border: none;
    color: var(--white-text);
    font-family: var(--font-mono);
    font-size: 12px;
    outline: none;
}

.input-with-unit span {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--muted-text);
}

.field-row select {
    background: #020305;
    border: 1px solid var(--grid-line);
    color: var(--white-text);
    font-family: var(--font-mono);
    font-size: 11px;
    padding: 4px 8px;
    border-radius: 3px;
    outline: none;
}

.custom-ticker-box {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px dashed var(--grid-line);
}

.custom-ticker-box label {
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--muted-text);
}

.custom-ticker-box input {
    background: #020305;
    border: 1px solid var(--grid-line);
    border-radius: 4px;
    padding: 8px;
    color: var(--white-text);
    font-family: var(--font-mono);
    font-size: 11px;
    outline: none;
}

.btn-primary {
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid var(--cyan-accent);
    color: var(--cyan-accent);
    padding: 8px;
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 700;
    border-radius: 3px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary:hover {
    background: var(--cyan-accent);
    color: var(--bg-color);
}

/* Data Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-mono);
    font-size: 11px;
}

.data-table th {
    text-align: left;
    padding: 8px 10px;
    color: var(--muted-text);
    font-size: 9px;
    border-bottom: 1px solid var(--grid-line);
}

.data-table td {
    padding: 8px 10px;
    border-bottom: 1px solid rgba(30, 41, 59, 0.2);
}

/* Visualizer Panel */
.visualizer-panel {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.canvas-card {
    background: var(--card-bg);
    border: 1px solid var(--grid-line);
    border-radius: 6px;
    padding: 24px;
    backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
}

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

.canvas-header h2 {
    font-family: var(--font-mono);
    font-size: 14px;
    letter-spacing: 0.12em;
    color: var(--white-text);
}

.sub-legend {
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--slate-text);
    margin-top: 4px;
    display: block;
}

.frontier-canvas-wrapper {
    position: relative;
    width: 100%;
    height: 440px;
    background: #020305;
    border: 1px solid rgba(30, 41, 59, 0.6);
    border-radius: 4px;
}

#frontierCanvas {
    width: 100%;
    height: 100%;
}

.chart-tooltip {
    position: absolute;
    display: none;
    pointer-events: none;
    background: rgba(6, 7, 11, 0.95);
    border: 1px solid var(--cyan-accent);
    padding: 8px 12px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 10px;
    line-height: 1.5;
    color: var(--white-text);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
    z-index: 10;
}

/* Weights Table & Allocation Bars */
.weights-card {
    background: var(--card-bg);
    border: 1px solid var(--grid-line);
    border-radius: 6px;
    padding: 24px;
}

.weight-bar-container {
    display: flex;
    height: 12px;
    background: rgba(15, 23, 42, 0.8);
    border-radius: 2px;
    overflow: hidden;
    gap: 1px;
}

.weight-segment {
    height: 100%;
    transition: width 0.4s ease;
}

/* Derivation Card */
.math-derivation-card {
    background: var(--card-bg);
    border: 1px solid var(--grid-line);
    border-radius: 6px;
    padding: 24px;
}

.math-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-top: 12px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--slate-text);
}

.math-column h4 {
    color: var(--white-text);
    font-family: var(--font-mono);
    font-size: 13px;
    margin-bottom: 8px;
}

.equation-box {
    background: #020305;
    border: 1px solid var(--grid-line);
    padding: 12px;
    border-radius: 4px;
    margin: 12px 0;
    color: var(--gold-accent);
    text-align: center;
    overflow-x: auto;
}

.thesis-quote {
    background: rgba(229, 185, 88, 0.05);
    border-left: 3px solid var(--gold-accent);
    padding: 12px 16px;
    margin-bottom: 12px;
    color: var(--white-text);
}

/* Footer */
.page-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 16px;
    border-top: 1px solid var(--grid-line);
    margin-top: 32px;
}

@media (max-width: 1024px) {
    .markowitz-layout { grid-template-columns: 1fr; }
    .math-content { grid-template-columns: 1fr; }
}