/* SCER LLM Carbon Efficiency Rating Tool - Clean Modern Design */

:root {
    /* Clean Color Palette - Inspired by TRUE Framework */
    --color-bg: #f8f9fa;
    --color-bg-dark: #ffffff;
    --color-text-primary: #212529;
    --color-text-secondary: #6c757d;
    --color-text-muted: #adb5bd;

    --color-primary: #0066cc;
    --color-primary-light: #4d94ff;
    --color-primary-dark: #004999;

    --color-success: #28a745;
    --color-success-light: #5cb85c;
    --color-info: #17a2b8;
    --color-warning: #ffc107;
    --color-danger: #dc3545;

    /* SCER Rating Colors */
    --color-rating-a: #28a745;
    --color-rating-b: #5cb85c;
    --color-rating-c: #ffc107;
    --color-rating-d: #fd7e14;
    --color-rating-e: #dc3545;

    /* Shadows & Effects */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.12);
    --shadow-hover: 0 8px 16px rgba(0, 0, 0, 0.15);

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Timing */
    --transition: 0.2s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header Styles */
header {
    background: var(--color-bg-dark);
    border-bottom: 1px solid #e9ecef;
    padding: 1.5rem 0;
    position: sticky;
    top: 0;
    z-index: 50;
    box-shadow: var(--shadow-sm);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--color-success), var(--color-primary));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.logo-icon i {
    color: white;
    font-size: 1.5rem;
}

header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0;
}

header h1 a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition);
}

header h1 a:hover {
    color: var(--color-primary);
}

header h1 a i {
    font-size: 0.75rem;
    opacity: 0;
    transition: opacity var(--transition);
}

header h1 a:hover i {
    opacity: 1;
}

header p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin: 0;
}

/* Navigation */
nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

nav button {
    background: none;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

nav button:hover {
    color: var(--color-primary);
    background: rgba(0, 102, 204, 0.05);
}

nav button i {
    margin-right: 0.5rem;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    margin-bottom: 3rem;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    text-align: center;
}

.hero-description {
    font-size: 1.25rem;
    text-align: center;
    max-width: 700px;
    margin: 0 auto 2rem;
    opacity: 0.95;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
    font-size: 0.95rem;
}

.btn-primary {
    background: var(--color-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

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

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

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin: -3rem 0 3rem 0;
}

.stat-card {
    background: var(--color-bg-dark);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 1px solid #e9ecef;
    transition: all var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
}

/* Section Headers */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #e9ecef;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

/* Info Badge */
.info-badge {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    background: #f8f9fa;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid #e9ecef;
}

.info-badge i {
    margin-right: 0.5rem;
    color: var(--color-info);
}

/* Filters */
.filters-container {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.filter-select {
    background: white;
    border: 2px solid #e9ecef;
    color: #212529;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    outline: none;
    transition: all var(--transition);
    font-weight: 500;
    font-size: 0.9rem;
}

.filter-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.filter-select:hover {
    border-color: var(--color-primary-light);
}

.filter-select option {
    padding: 0.5rem;
    color: #212529;
    background: white;
    font-weight: 500;
}

/* Model Cards */
.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.model-card {
    background: white;
    border: 2px solid #e9ecef;
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    transition: all var(--transition);
    position: relative;
}

.model-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--color-primary-light);
}

.model-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e9ecef;
}

.model-info h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.model-organization {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.model-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.metric {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: var(--radius-md);
    border: 1px solid #e9ecef;
}

.metric-label {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.metric-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.model-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
}

.model-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tag {
    font-size: 0.7rem;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.tag-green {
    background: #d4edda;
    color: #155724;
}

.tag-blue {
    background: #d1ecf1;
    color: #0c5460;
}

.tag-purple {
    background: #e2d9f3;
    color: #5a3080;
}

/* SCER Rating Badges */
.scer-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    font-size: 1.25rem;
    font-weight: 800;
    color: white;
    box-shadow: var(--shadow-md);
}

.scer-a { background: var(--color-rating-a); }
.scer-b { background: var(--color-rating-b); }
.scer-c { background: var(--color-rating-c); color: var(--color-text-primary); }
.scer-d { background: var(--color-rating-d); }
.scer-e { background: var(--color-rating-e); }

/* Table Styles */
.table-container {
    background: white;
    border: 2px solid #e9ecef;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

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

/* Table Wrapper for Mobile Scroll */
.table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 800px; /* Prevents table from being too cramped on mobile */
}

th {
    background: #f8f9fa;
    padding: 0.75rem;
    text-align: left;
    font-weight: 700;
    color: #212529;
    border-bottom: 2px solid #e9ecef;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    white-space: nowrap;
}

@media (min-width: 768px) {
    th {
        padding: 1rem;
        font-size: 0.8rem;
    }
}

td {
    padding: 0.75rem;
    border-bottom: 1px solid #f1f3f5;
    color: #212529;
    font-weight: 500;
    font-size: 0.875rem;
}

@media (min-width: 768px) {
    td {
        padding: 1rem;
        font-size: 1rem;
    }
}

tr:hover {
    background: #f8f9fa;
}

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

/* Methodology Cards */
.methodology-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.methodology-card {
    background: white;
    border: 2px solid #e9ecef;
    border-radius: var(--radius-lg);
    padding: 2rem;
}

.methodology-card h4 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-text-primary);
}

.methodology-card h4 i {
    margin-right: 0.5rem;
    color: var(--color-primary);
}

/* Info Boxes */
.info-box {
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    margin: 1.5rem 0;
    border-left: 4px solid;
}

.info-box-success {
    background: #d4edda;
    border-color: var(--color-success);
    color: #155724;
}

.info-box-info {
    background: #d1ecf1;
    border-color: var(--color-info);
    color: #0c5460;
}

.info-box-warning {
    background: #fff3cd;
    border-color: var(--color-warning);
    color: #856404;
}

/* Footer */
footer {
    background: white;
    border-top: 2px solid #e9ecef;
    margin-top: 4rem;
    padding: 3rem 0;
    text-align: center;
}

footer::before {
    display: none;
}

.footer-content {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.footer-text {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

footer a {
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition);
}

footer a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* Utility Classes */
.hidden { display: none; }

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

.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }

.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }

.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }

/* Loading States */
.loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 3rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #e9ecef;
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .models-grid {
        grid-template-columns: 1fr;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    nav {
        display: none;
    }

    .container {
        padding: 0 1rem;
    }

    .model-metrics {
        grid-template-columns: 1fr;
    }

    th, td {
        padding: 0.75rem 0.5rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .filters-container {
        flex-direction: column;
    }

    .filter-select {
        width: 100%;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f3f5;
}

::-webkit-scrollbar-thumb {
    background: #adb5bd;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #868e96;
}

/* Selection */
::selection {
    background: rgba(0, 102, 204, 0.2);
    color: var(--color-text-primary);
}

/* Modal Styles - SIMPLIFIED FOR WHITE BACKGROUND */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.75);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

#modelModal.hidden {
    display: none !important;
}

#modelModal:not(.hidden) {
    display: flex !important;
}

.modal-container {
    background: #ffffff !important;
    background-color: #ffffff !important;
    background-image: none !important;
    width: 600px;
    max-width: 95%;
    max-height: 90vh;
    overflow-y: auto;
    padding: 20px;

    @media (min-width: 640px) {
        padding: 30px;
    }

    @media (min-width: 768px) {
        padding: 40px;
    }
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    position: relative;
    z-index: 10000;
    opacity: 1 !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    filter: none !important;
    isolation: isolate;
}

/* Ensure white background with pseudo-element */
.modal-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: #ffffff;
    border-radius: 16px;
    z-index: -1;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.modal-header h2 {
    color: #212529;
    margin: 0;
}

.modal-header p {
    color: #6c757d;
    margin: 0.5rem 0 0 0;
}

.modal-close {
    background: #f8f9fa;
    border: 2px solid #e9ecef;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition);
    color: var(--color-text-secondary);
    font-size: 1.25rem;
}

.modal-close:hover {
    background: #e9ecef;
    color: var(--color-text-primary);
    transform: rotate(90deg);
}

.modal-body {
    /* No special styling needed - inherits white from modal-container */
}

.modal-section {
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #e9ecef;
}

.modal-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.modal-section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #212529;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.modal-section-title i {
    color: #0066cc;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.metric-box {
    background: #f8f9fa;
    padding: 1.25rem;
    border-radius: 12px;
    border: 1px solid #e9ecef;
}

.metric-box .metric-label {
    font-size: 0.75rem;
    color: #6c757d;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.metric-box .metric-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #212529;
}

/* Utility text colors for modal */
.text-3xl, .text-2xl { color: #212529; }
.text-sm { color: #6c757d; }
.text-gray-600 { color: #6c757d; }
.font-bold { font-weight: 700; }

/* Table row clickable */
tbody tr {
    cursor: pointer;
    transition: all var(--transition);
}

tbody tr:hover {
    background: #f8f9fa;
    transform: scale(1.01);
}

/* Responsive Modal */
@media (max-width: 768px) {
    .modal-overlay {
        padding: 1rem;
    }

    .modal-container {
        max-height: 95vh;
    }

    .modal-header {
        padding: 1.5rem;
    }

    .modal-body {
        padding: 1.5rem;
    }

    .metrics-grid {
        grid-template-columns: 1fr;
    }

    .modal-section-title {
        font-size: 1.1rem;
    }
}