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

/* Base Styles and Theme Variables */
:root {
    --font-sans: 'Outfit', sans-serif;
    
    /* Light Theme Palette */
    --bg-color: #f8fafc;
    --text-color: #0f172a;
    --text-muted: #64748b;
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --accent-color: #0d9488;
    --accent-hover: #0f766e;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --success-color: #10b981;
    --border-color: #e2e8f0;
    --card-bg: rgba(255, 255, 255, 0.85);
    --header-bg: rgba(255, 255, 255, 0.9);
    --footer-bg: #f1f5f9;
    --tab-bg: #f1f5f9;
    --tab-active-bg: #ffffff;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --glass-border: rgba(255, 255, 255, 0.6);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 18px;
}

[data-theme="dark"] {
    /* Dark Theme Palette */
    --bg-color: #0b0f19;
    --text-color: #f8fafc;
    --text-muted: #94a3b8;
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --accent-color: #14b8a6;
    --accent-hover: #0d9488;
    --danger-color: #f87171;
    --warning-color: #fbbf24;
    --success-color: #34d399;
    --border-color: #1e293b;
    --card-bg: rgba(30, 41, 59, 0.7);
    --header-bg: rgba(15, 23, 42, 0.95);
    --footer-bg: #0f172a;
    --tab-bg: #1e293b;
    --tab-active-bg: #0b0f19;
    --glass-border: rgba(255, 255, 255, 0.08);
}

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

body {
    margin: 0;
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
}

body.modal-open > #app-container {
    filter: blur(5px);
    pointer-events: none;
}

#app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Header Styles */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 24px;
    background-color: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
}

#page-title {
    font-size: clamp(18px, 4.5vw, 22px);
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--text-color);
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Navigation Buttons */
header.app-header button,
.header-controls button {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 14px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

header.app-header button:hover,
.header-controls button:hover {
    background-color: var(--tab-bg);
    border-color: var(--text-muted);
}

#theme-toggle {
    background-color: var(--primary-color) !important;
    color: white !important;
    border: none !important;
}

#theme-toggle:hover {
    background-color: var(--primary-hover) !important;
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 26px;
    height: 20px;
    background: transparent !important;
    border: none !important;
    cursor: pointer;
    padding: 0;
    z-index: 110;
}

.hamburger span {
    width: 100%;
    height: 2.5px;
    background-color: var(--text-color);
    border-radius: 5px;
    transition: all 0.2s ease;
    transform-origin: 1px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(2px, 1px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: translateX(10px);
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(1px, -1px);
}

/* Main Content Area */
#main-content {
    flex-grow: 1;
    padding: 24px;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

.page {
    display: none;
    animation: fadeIn 0.3s ease;
}

.page.active-page {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Dashboard / Home Page Grid */
.button-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    width: 100%;
    padding: 10px 0;
}

.big-button {
    background: var(--card-bg);
    color: var(--text-color);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 24px;
    min-height: 100px;
    font-size: 16px;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.big-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-color), var(--accent-color));
}

.big-button:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

/* Option A Custom Scale Navigation Header */
.scale-nav-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    background: var(--card-bg);
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.scale-selector-wrapper {
    flex-grow: 1;
}

.scale-nav-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: 10px 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.scale-nav-btn:hover {
    background-color: var(--primary-hover);
}

/* Tab Container Styles */
.tab-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    margin-bottom: 24px;
}

.tab-buttons {
    display: flex;
    background-color: var(--tab-bg);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    white-space: nowrap;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
}

.tab-buttons::-webkit-scrollbar {
    display: none;
}

.tab-button {
    background: transparent;
    color: var(--text-muted);
    padding: 14px 20px;
    border: none;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
    border-bottom: 3px solid transparent;
}

.tab-button:hover {
    color: var(--text-color);
    background-color: rgba(0, 0, 0, 0.02);
}

.tab-button.active {
    color: var(--primary-color);
    background-color: var(--tab-active-bg);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    padding: 24px;
}

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

/* Form and Inputs */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    align-items: center;
    max-width: 800px;
    margin-bottom: 20px;
}

@media (max-width: 600px) {
    .form-grid {
        grid-template-columns: 1fr;
    }
}

input[type="number"],
input[type="text"],
select,
textarea {
    width: 100%;
    background-color: var(--bg-color);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-family: var(--font-sans);
    font-size: 14px;
    transition: all 0.2s ease;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

/* Button Groups */
.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 16px 0;
}

button.btn-primary,
.button-group button,
.flowchart-nav button,
#disclaimer-modal button {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

button.btn-primary:hover,
.button-group button:hover,
.flowchart-nav button:hover,
#disclaimer-modal button:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
}

.button-group .copy-btn {
    background-color: var(--accent-color);
}

.button-group .copy-btn:hover {
    background-color: var(--accent-hover);
}

.button-group .reset-btn {
    background-color: var(--text-muted);
}

.button-group .reset-btn:hover {
    background-color: #475569;
}

/* Calculator Specific Styles */
.calculator-item {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 16px;
    background-color: rgba(0, 0, 0, 0.015);
    transition: all 0.2s ease;
}

.calculator-item:hover {
    border-color: var(--text-muted);
}

.calculator-item legend {
    font-weight: 700;
    font-size: 16px;
    padding: 0 8px;
    color: var(--text-color);
}

.calculator-item-instruction {
    font-size: 13.5px;
    color: var(--text-muted);
    margin: 4px 0 12px 0;
    font-style: italic;
    line-height: 1.4;
}

.radio-option {
    padding: 6px 0;
}

.radio-option label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 14px;
}

.radio-option input[type="radio"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

/* Results Display */
.results-grid {
    display: grid;
    grid-template-columns: max-content 1fr;
    gap: 12px;
    margin: 16px 0;
    padding: 16px;
    background-color: rgba(99, 102, 241, 0.06);
    border-left: 4px solid var(--primary-color);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-weight: 700;
    font-size: 16px;
}

.results-grid label {
    color: var(--text-muted);
}

.total-score {
    color: var(--primary-color);
}

.severity {
    color: var(--text-color);
}

.emr-summary {
    font-family: 'Courier New', Courier, monospace;
    font-size: 13px;
    line-height: 1.5;
    background-color: var(--bg-color) !important;
    border-color: var(--border-color);
    padding: 12px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.calculator-reference {
    font-size: 12px;
    color: var(--text-muted);
    font-style: italic;
    margin-top: 14px;
    border-top: 1px solid var(--border-color);
    padding-top: 10px;
}

/* Modal Layouts */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: var(--card-bg);
    color: var(--text-color);
    margin: 10% auto;
    padding: 24px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    width: 90%;
    max-width: 600px;
    position: relative;
    box-shadow: var(--shadow-lg);
    animation: modalSlide 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    backdrop-filter: blur(20px);
}

@keyframes modalSlide {
    from { transform: translateY(-30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.close-button {
    color: var(--text-muted);
    position: absolute;
    top: 14px;
    right: 20px;
    font-size: 24px;
    font-weight: 700;
    cursor: pointer;
    transition: color 0.2s ease;
}

.close-button:hover {
    color: var(--text-color);
}

/* Monitoring Guidelines Tab styles */
.checklist-container {
    margin-bottom: 24px;
}

.checklist-group {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 18px;
    margin-bottom: 16px;
}

.checklist-group h4 {
    margin-bottom: 12px;
    font-size: 15px;
    font-weight: 700;
    color: var(--primary-color);
}

.checklist-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
    font-size: 14.5px;
}

.checklist-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.checklist-item label {
    cursor: pointer;
}

/* Equivalents Converter Grid styling */
.converter-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

@media (max-width: 768px) {
    .converter-container {
        grid-template-columns: 1fr;
    }
}

.converter-card {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 16px;
}

.converter-card h3 {
    margin-bottom: 16px;
    font-size: 17px;
    color: var(--primary-color);
}

.converter-inputs {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

.converter-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.converter-row label {
    font-weight: 600;
    font-size: 13.5px;
    color: var(--text-muted);
}

.converter-output-grid {
    background-color: rgba(99, 102, 241, 0.05);
    border-radius: var(--radius-sm);
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
}

.equivalent-row {
    display: flex;
    justify-content: space-between;
    font-size: 14.5px;
}

.equivalent-row span:last-child {
    font-weight: 700;
    color: var(--primary-color);
}

.guideline-alert-box {
    margin-top: 14px;
    padding: 10px 14px;
    background-color: rgba(239, 68, 68, 0.08);
    border-left: 4px solid var(--danger-color);
    border-radius: var(--radius-sm);
    font-size: 13px;
    line-height: 1.4;
}

/* Statewide contacts layout */
.contact-list {
    list-style: none;
    margin-top: 16px;
}

.contact-list li {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
}

.contact-list li strong {
    display: block;
    font-size: 15px;
    margin-bottom: 6px;
}

.contact-list a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 700;
}

.contact-list a:hover {
    text-decoration: underline;
}

/* QTc Table styling */
.qtc-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.qtc-table th, .qtc-table td {
    border: 1px solid var(--border-color);
    padding: 12px;
    text-align: left;
    font-size: 14px;
}

.qtc-table th {
    background-color: var(--tab-bg);
    font-weight: 700;
}

.qtc-risk-badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 700;
    color: white;
    text-align: center;
}

.qtc-risk-badge.risk-high { background-color: var(--danger-color); }
.qtc-risk-badge.risk-intermediate { background-color: var(--warning-color); color: #000; }
.qtc-risk-badge.risk-low { background-color: var(--success-color); }

/* MSE and Formulation Generator layouts */
.generator-layout-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 24px;
}

@media (max-width: 900px) {
    .generator-layout-grid {
        grid-template-columns: 1fr;
    }
}

.mse-category-box {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
}

.mse-category-box h4 {
    margin-bottom: 12px;
    font-size: 15px;
    font-weight: 700;
    color: var(--primary-color);
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 6px;
}

.mse-options-flex {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.mse-option-btn {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    cursor: pointer;
    font-size: 13.5px;
    display: flex;
    align-items: center;
    gap: 8px;
    user-select: none;
    transition: all 0.2s ease;
}

.mse-option-btn:hover {
    border-color: var(--primary-color);
}

.mse-option-btn.selected {
    background-color: rgba(99, 102, 241, 0.12);
    border-color: var(--primary-color);
    color: var(--primary-color);
    font-weight: 600;
}

.formulation-form-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

.formulation-row {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.formulation-row label {
    font-weight: 700;
    font-size: 14px;
    color: var(--primary-color);
}

/* Footer layout */
.app-footer {
    padding: 16px 24px;
    background-color: var(--footer-bg);
    border-top: 1px solid var(--border-color);
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.footer-version {
    font-size: 12px;
    color: var(--text-muted);
    white-space: nowrap;
}

.footer-disclaimer {
    font-size: 12px;
    color: var(--text-muted);
    text-align: right;
    line-height: 1.4;
}

/* Responsive Styles */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .header-controls {
        display: none;
        position: absolute;
        top: 60px;
        right: 0;
        background-color: var(--header-bg);
        border: 1px solid var(--border-color);
        border-top: none;
        border-radius: 0 0 0 var(--radius-md);
        flex-direction: column;
        width: 180px;
        padding: 16px 10px;
        box-shadow: var(--shadow-lg);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
    }

    .header-controls.active {
        display: flex;
    }

    .header-controls button {
        width: 100%;
        text-align: left;
    }

    #main-content {
        padding: 16px;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .footer-disclaimer {
        text-align: left;
    }
}

/* ==========================================================================
   PK VISUALISER PAGE
   ========================================================================== */

/* Page header */
.pk-page-header {
    margin-bottom: 20px;
}

.pk-page-subtitle {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 12px;
}

.pk-disclaimer-banner {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.12), rgba(239, 68, 68, 0.08));
    border: 1px solid rgba(245, 158, 11, 0.35);
    border-left: 4px solid var(--warning-color);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    font-size: 12.5px;
    color: var(--text-color);
    line-height: 1.5;
}

/* Two-column layout */
.pk-layout {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 20px;
    align-items: start;
    min-height: 560px;
}

/* Left panel */
.pk-inputs-panel {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
    box-shadow: var(--shadow-sm);
}

.pk-input-section h4 {
    font-size: 13px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--primary-color);
    margin-bottom: 8px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-color);
}

.pk-input-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-bottom: 8px;
    line-height: 1.5;
}

.pk-input-hint code {
    background: var(--tab-bg);
    padding: 1px 5px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 11.5px;
    color: var(--primary-color);
}

/* Drug preset select */
#pk-drug-select {
    width: 100%;
    padding: 9px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    font-size: 13px;
    cursor: pointer;
    transition: border-color 0.2s;
}

#pk-drug-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

/* Parameter grid */
.pk-param-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 10px 14px;
    align-items: center;
}

.pk-param-grid label {
    font-size: 13px;
    color: var(--text-color);
    white-space: nowrap;
}

.pk-param-grid input[type="number"] {
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    font-size: 13px;
    width: 100%;
    transition: border-color 0.2s;
}

.pk-param-grid input[type="number"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

/* Regimen textarea */
.pk-regimen-input {
    width: 100%;
    height: 160px;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-color);
    color: var(--text-color);
    font-family: 'Courier New', monospace;
    font-size: 12.5px;
    line-height: 1.6;
    resize: vertical;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

.pk-regimen-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

/* Action buttons */
.pk-actions {
    display: flex;
    gap: 10px;
}

.pk-generate-btn {
    flex: 1;
    background: linear-gradient(135deg, var(--primary-color), #6d28d9);
    color: #fff;
    border: none;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s, box-shadow 0.15s;
}

.pk-generate-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.35);
}

.pk-generate-btn:active {
    transform: translateY(0);
}

.pk-clear-btn {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 13px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}

.pk-clear-btn:hover {
    background: var(--tab-bg);
    color: var(--text-color);
}

/* Steady-state panel */
.pk-ss-panel {
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.06), rgba(109, 40, 217, 0.04));
    border: 1px solid rgba(79, 70, 229, 0.2);
    border-radius: var(--radius-sm);
    padding: 14px;
}

.pk-ss-panel h4 {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--primary-color);
    margin-bottom: 10px;
    border-bottom: 1px solid rgba(79, 70, 229, 0.15);
    padding-bottom: 6px;
}

.pk-ss-grid {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 6px 12px;
    font-size: 12.5px;
}

.pk-ss-grid span:nth-child(even) {
    font-weight: 600;
    color: var(--primary-color);
    text-align: right;
}

/* Right panel: chart */
.pk-chart-panel {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    min-height: 460px;
}

.pk-chart-wrapper {
    position: relative;
    flex: 1;
    min-height: 400px;
}

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

.pk-chart-placeholder {
    color: var(--text-muted);
    font-size: 13.5px;
    text-align: center;
    padding: 80px 20px;
    line-height: 1.7;
}

.pk-error-msg {
    background: rgba(239, 68, 68, 0.09);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: var(--radius-sm);
    color: #b91c1c;
    font-size: 13px;
    padding: 10px 14px;
    margin-top: 8px;
}

/* Responsive collapse */
@media (max-width: 900px) {
    .pk-layout {
        grid-template-columns: 1fr;
    }
}