/* ==========================================================================
   Cranial Index & Cranial Vault Asymmetry Index Calculator Pro - Styles
   Supervising Developer: Dr G Narenthiran MB Ch FEBNS FRCS(SN)
   ========================================================================== */

:root {
    /* Color Palette */
    --bg-main: #0b0f19;
    --panel-bg: rgba(15, 23, 42, 0.75);
    --panel-border: rgba(255, 255, 255, 0.08);
    --card-bg: rgba(30, 41, 59, 0.6);
    --card-border: rgba(255, 255, 255, 0.06);
    
    /* Brand Accents */
    --primary-cyan: #06b6d4;
    --primary-hover: #0891b2;
    --primary-light: rgba(6, 182, 212, 0.15);
    --accent-blue: #38bdf8;
    
    /* Status Colors for Cranial Ratios & CVAI */
    --scapho-amber: #f59e0b;
    --scapho-bg: rgba(245, 158, 11, 0.15);
    --normal-emerald: #10b981;
    --normal-bg: rgba(16, 185, 129, 0.15);
    --brachy-pink: #ec4899;
    --brachy-bg: rgba(236, 72, 153, 0.15);
    --severe-red: #ef4444;
    --severe-bg: rgba(239, 68, 68, 0.15);
    
    /* Neutral Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Shadows & Transitions */
    --shadow-subtle: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px rgba(6, 182, 212, 0.25);
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    background-image: 
        radial-gradient(at 0% 0%, rgba(6, 182, 212, 0.08) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(56, 189, 248, 0.05) 0px, transparent 50%);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    padding: 24px 16px;
}

h1, h2, h3, h4, .brand-titles h1, .kpi-value {
    font-family: 'Outfit', sans-serif;
}

/* Main Container */
.app-container {
    max-width: 1440px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* HEADER BAR */
.app-header {
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    padding: 20px 28px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-subtle);
    flex-wrap: wrap;
    gap: 16px;
}

.header-brand {
    display: flex;
    align-items: center;
    gap: 18px;
}

.brand-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, #06b6d4, #0284c7);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: #ffffff;
    box-shadow: var(--shadow-glow);
}

.brand-titles h1 {
    font-size: 23px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 400;
    margin-top: 1px;
}

.supervisor-line {
    font-size: 12px;
    color: var(--primary-cyan);
    margin-top: 4px;
}

.supervisor-line a {
    color: var(--accent-blue);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* BUTTON SYSTEM */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: var(--radius-md);
    font-size: 13px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, #06b6d4, #0284c7);
    color: #ffffff;
    box-shadow: 0 4px 14px rgba(6, 182, 212, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #0891b2, #0369a1);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(6, 182, 212, 0.45);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.06);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.12);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.25);
}

.btn-outline-danger {
    background: rgba(239, 68, 68, 0.08);
    color: #fca5a5;
    border-color: rgba(239, 68, 68, 0.3);
}

.btn-outline-danger:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--severe-red);
    color: #ffffff;
}

/* DUAL-TAB NAVIGATION BAR */
.tab-navigation {
    display: flex;
    gap: 12px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    padding: 8px;
}

.nav-tab {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 12px 16px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.nav-tab i {
    font-size: 18px;
    margin-bottom: 4px;
    color: var(--text-muted);
}

.nav-tab span {
    font-family: 'Outfit', sans-serif;
    font-size: 15px;
    font-weight: 600;
}

.nav-tab small {
    font-size: 11px;
    color: var(--text-muted);
}

.nav-tab:hover {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
}

.nav-tab.active {
    background: var(--card-bg);
    border-color: rgba(6, 182, 212, 0.4);
    color: var(--text-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.nav-tab.active i {
    color: var(--primary-cyan);
}

.nav-tab.active small {
    color: var(--accent-blue);
}

/* TAB CONTENT PANELS */
.tab-content {
    display: none;
}

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

/* MAIN LAYOUT */
.main-content {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 20px;
}

.panel {
    background: var(--panel-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    padding: 24px;
    box-shadow: var(--shadow-subtle);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ANATOMY SIDE PANEL */
.panel-header h2 {
    font-size: 16px;
    font-weight: 600;
    color: var(--primary-cyan);
    display: flex;
    align-items: center;
    gap: 10px;
}

.diagram-wrapper {
    width: 100%;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--panel-border);
    background: #ffffff;
    box-shadow: inset 0 0 10px rgba(0,0,0,0.1);
    padding: 8px;
    text-align: center;
}

.diagram-img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
    object-fit: contain;
}

.denominator-select-box {
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.25);
    border-radius: var(--radius-md);
    padding: 12px 14px;
}

.denominator-select-box label {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-cyan);
    margin-bottom: 6px;
}

.gender-radio-group {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-top: 6px;
    background: rgba(15, 23, 42, 0.6);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.radio-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
}

.radio-label input[type="radio"] {
    accent-color: var(--primary-cyan);
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.formula-box {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 16px;
}

.formula-box h3 {
    font-size: 14px;
    color: var(--accent-blue);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.formula-math {
    background: rgba(15, 23, 42, 0.8);
    padding: 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: #e2e8f0;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    margin-bottom: 8px;
}

.formula-note {
    font-size: 12px;
    color: var(--text-secondary);
}

.thresholds-box h3 {
    font-size: 14px;
    color: var(--primary-cyan);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.threshold-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.threshold-list li {
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    gap: 3px;
    border: 1px solid transparent;
}

.t-scapho {
    background: var(--scapho-bg);
    border-color: rgba(245, 158, 11, 0.3) !important;
}

.t-scapho .t-badge {
    color: var(--scapho-amber);
    font-weight: 700;
    font-size: 12px;
}

.t-normal {
    background: var(--normal-bg);
    border-color: rgba(16, 185, 129, 0.3) !important;
}

.t-normal .t-badge {
    color: var(--normal-emerald);
    font-weight: 700;
    font-size: 12px;
}

.t-brachy {
    background: var(--brachy-bg);
    border-color: rgba(236, 72, 153, 0.3) !important;
}

.t-brachy .t-badge {
    color: var(--brachy-pink);
    font-weight: 700;
    font-size: 12px;
}

.t-severe {
    background: var(--severe-bg);
    border-color: rgba(239, 68, 68, 0.3) !important;
}

.t-severe .t-badge {
    color: var(--severe-red);
    font-weight: 700;
    font-size: 12px;
}

.t-desc {
    font-size: 11px;
    color: var(--text-secondary);
}

.clinical-variability-note {
    font-size: 11px;
    color: #fca5a5;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: var(--radius-sm);
    padding: 8px 10px;
    margin-top: 10px;
    line-height: 1.4;
}

/* CLINICAL INSIGHTS & REFERENCE CARDS */
.clinical-insights-card {
    background: var(--card-bg);
    border: 1px solid rgba(6, 182, 212, 0.2);
    border-radius: var(--radius-md);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.clinical-insights-card h4 {
    font-size: 13px;
    color: var(--primary-cyan);
    display: flex;
    align-items: center;
    gap: 6px;
}

.ref-summary-text {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.45;
}

.citation-box {
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    padding: 10px;
    font-size: 11px;
    color: #cbd5e1;
    line-height: 1.45;
}

.citation-box a {
    color: var(--accent-blue);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.clinical-insights-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.clinical-insights-card li {
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.4;
    padding-left: 8px;
    border-left: 2px solid var(--accent-blue);
}

/* DEMOGRAPHICS BAR */
.patient-demographics-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
    gap: 16px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    padding: 16px 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group-btn {
    justify-content: flex-end;
}

.btn-submit-top {
    width: 100%;
    padding: 8px 12px;
    font-size: 12px;
    font-weight: 700;
    justify-content: center;
    white-space: nowrap;
    background: linear-gradient(135deg, #06b6d4, #0284c7);
    box-shadow: 0 3px 12px rgba(6, 182, 212, 0.4);
    height: 38px;
    margin-top: auto;
}

.form-group label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.form-group input, .form-group select {
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    color: var(--text-primary);
    font-size: 13px;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 10px rgba(6, 182, 212, 0.25);
}

/* TABLE SECTION */
.table-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

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

.table-header-title h3 {
    font-size: 15px;
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    gap: 8px;
}

.badge-total-rows {
    font-size: 12px;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.05);
    padding: 4px 10px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.table-scroll {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--card-border);
}

.evans-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 980px;
    background: rgba(15, 23, 42, 0.5);
}

.evans-table th {
    background: rgba(30, 41, 59, 0.9);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 12px 14px;
    text-align: left;
    border-bottom: 1px solid var(--card-border);
}

.evans-table td {
    padding: 10px 14px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    vertical-align: middle;
}

.col-tp { width: 100px; }
.col-date { width: 140px; }
.col-context { width: 160px; }
.col-measurement { width: 180px; }
.col-result { width: 130px; }
.col-status { width: 190px; }
.col-action { width: 65px; text-align: center; }

.tp-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    gap: 6px;
}

.input-date, .input-context, .input-bpd, .input-ofd, .input-diag-a, .input-diag-b {
    width: 100%;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    padding: 7px 10px;
    color: var(--text-primary);
    font-size: 13px;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.input-date:focus, .input-context:focus, .input-bpd:focus, .input-ofd:focus, .input-diag-a:focus, .input-diag-b:focus {
    border-color: var(--primary-cyan);
}

.index-display {
    font-family: 'Outfit', sans-serif;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.index-ratio-sub {
    font-size: 11px;
    color: var(--text-secondary);
    display: block;
}

/* BADGES FOR CLASSIFICATION */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-scapho {
    background: var(--scapho-bg);
    color: var(--scapho-amber);
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.badge-normal {
    background: var(--normal-bg);
    color: var(--normal-emerald);
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-brachy {
    background: var(--brachy-bg);
    color: var(--brachy-pink);
    border: 1px solid rgba(236, 72, 153, 0.3);
}

.badge-severe {
    background: var(--severe-bg);
    color: var(--severe-red);
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.badge-empty {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.btn-icon-delete {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 14px;
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.btn-icon-delete:hover {
    color: var(--severe-red);
    background: rgba(239, 68, 68, 0.15);
}

.table-footer-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 4px;
    flex-wrap: wrap;
    gap: 12px;
}

.btn-add-tp {
    background: var(--primary-light);
    color: var(--primary-cyan);
    border: 1px solid rgba(6, 182, 212, 0.3);
}

.btn-add-tp:hover {
    background: rgba(6, 182, 212, 0.25);
    color: #ffffff;
}

.helper-text {
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* KPI GRID */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.kpi-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.kpi-title {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.kpi-value {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-primary);
}

/* CHART SECTION */
.chart-section {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.chart-header h3 {
    font-size: 15px;
    color: var(--accent-blue);
    display: flex;
    align-items: center;
    gap: 8px;
}

.chart-sub {
    font-size: 12px;
    color: var(--text-secondary);
}

.chart-body {
    height: 320px;
    position: relative;
    width: 100%;
}

.chart-placeholder {
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--text-muted);
    border: 2px dashed rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 20px;
    text-align: center;
}

.placeholder-icon {
    font-size: 40px;
    color: rgba(255, 255, 255, 0.15);
}

.chart-canvas-wrapper {
    height: 100%;
    width: 100%;
}

.hidden {
    display: none !important;
}

/* FOOTER & COUNTERS */
.app-footer {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-lg);
    padding: 20px 28px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    align-items: center;
    text-align: center;
    box-shadow: var(--shadow-subtle);
}

.footer-stats-bar {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.stat-badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 6px 16px;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.stat-badge i {
    color: var(--primary-cyan);
}

.stat-badge strong {
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    font-size: 14px;
}

.copyright-notice {
    font-size: 13px;
    color: var(--text-secondary);
}

.copyright-notice a {
    color: var(--accent-blue);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.mandatory-disclaimer {
    font-size: 11px;
    color: var(--text-muted);
    max-width: 1000px;
    line-height: 1.5;
}

/* RESPONSIVE DESIGN */
@media (max-width: 1100px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    .patient-demographics-bar {
        grid-template-columns: repeat(2, 1fr);
    }
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .patient-demographics-bar, .kpi-grid {
        grid-template-columns: 1fr;
    }
    .app-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* PRINT STYLES - PRINTS ACTIVE TAB ONLY */
@media print {
    body {
        background: #ffffff !important;
        color: #000000 !important;
        padding: 0 !important;
    }
    .app-container {
        max-width: 100% !important;
    }
    .header-actions, .tab-navigation, .btn-add-tp, .col-action, .btn-icon-delete, .footer-stats-bar {
        display: none !important;
    }
    .tab-content {
        display: none !important;
    }
    .tab-content.active {
        display: block !important;
    }
    .patient-demographics-bar {
        background: #f8fafc !important;
        border: 1px solid #cbd5e1 !important;
        color: #0f172a !important;
        padding: 12px 18px !important;
        margin-bottom: 16px !important;
        display: grid !important;
        grid-template-columns: repeat(3, 1fr) !important;
        gap: 12px !important;
        page-break-inside: avoid;
    }
    .patient-demographics-bar .form-group label {
        color: #334155 !important;
        font-weight: 700 !important;
        font-size: 11px !important;
    }
    .patient-demographics-bar .form-group input,
    .patient-demographics-bar .form-group select {
        background: #ffffff !important;
        color: #000000 !important;
        border: 1px solid #94a3b8 !important;
        font-weight: 600 !important;
        font-size: 12px !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }
    .panel {
        background: #ffffff !important;
        border: none !important;
        box-shadow: none !important;
        padding: 0 !important;
    }
    .evans-table th {
        background: #f1f5f9 !important;
        color: #000000 !important;
    }
    .evans-table td {
        color: #000000 !important;
        border-bottom: 1px solid #cbd5e1 !important;
    }
    .mandatory-disclaimer {
        color: #475569 !important;
    }
}