/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.7;
    color: #333;
    background-color: #ffffff;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    width: 90%;
}

@media (min-width: 1200px) {
    .container {
        min-width: 900px;
    }
}

/* Progressive container sizing */
@media (min-width: 768px) {
    .container {
        width: 85%;
        padding: 0 2.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        width: 80%;
        max-width: 1400px;
    }
}

@media (min-width: 1440px) {
    .container {
        width: 75%;
        max-width: 1600px;
    }
}

/* Wider container for sections with tables */
@media (min-width: 1024px) {
    .comparison-table {
        margin: 2rem -2rem;
    }
}

@media (min-width: 1200px) {
    .comparison-table {
        margin: 2rem -3rem;
    }
}

@media (min-width: 1440px) {
    .comparison-table {
        margin: 2rem -4rem;
    }
}

/* Header */
header {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Main content */
main {
    margin-bottom: 3rem;
}

article {
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    padding: 2rem 0;
}

.letter-content {
    padding: 0 1rem;
}

/* Typography */
h2 {
    font-size: 1.8rem;
    color: #1e3a8a;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

h3 {
    font-size: 1.4rem;
    color: #1e40af;
    margin: 2rem 0 1rem 0;
    font-weight: 600;
    border-left: 4px solid #3b82f6;
    padding-left: 1rem;
}

h4 {
    font-size: 1.2rem;
    color: #1e40af;
    margin: 1.5rem 0 1rem 0;
    font-weight: 600;
}

p {
    margin-bottom: 1.2rem;
    text-align: justify;
    hyphens: auto;
}

/* Enhanced typography for larger screens */
@media (min-width: 1200px) {
    body {
        font-size: 17px;
        line-height: 1.75;
    }
    
    h1 {
        font-size: 2.75rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
}

/* Lists */
ul {
    margin: 1rem 0 1.5rem 2rem;
}

li {
    margin-bottom: 0.5rem;
}

li strong {
    color: #1e40af;
}

/* Table styles */
.comparison-table {
    margin: 2rem -2rem;
    background: #f8fafc;
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid #e2e8f0;
    max-width: none;
}

.table-container {
    margin-top: 1rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    overflow: hidden;
}

table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
}

th, td {
    padding: 0.75rem 0.6rem;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
    word-wrap: break-word;
    vertical-align: top;
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Optimized column widths for better fit */
th:first-child, td:first-child {
    width: 24%;
    font-weight: 600;
}

th:nth-child(2), td:nth-child(2) {
    width: 17%;
}

th:nth-child(3), td:nth-child(3) {
    width: 15%;
}

th:nth-child(4), td:nth-child(4) {
    width: 12%;
}

th:nth-child(5), td:nth-child(5) {
    width: 16%;
}

th:nth-child(6), td:nth-child(6) {
    width: 16%;
}

th {
    background-color: #1e3a8a;
    color: white;
    font-weight: 600;
    font-size: 0.85rem;
    line-height: 1.3;
}

tr:hover {
    background-color: #f8fafc;
}

td strong {
    color: #1e40af;
}

/* Table status styling */
.available {
    background-color: #dcfce7;
    color: #166534;
    font-weight: 600;
}

.limited {
    background-color: #fef3c7;
    color: #92400e;
    font-weight: 600;
}

.unavailable {
    background-color: #fee2e2;
    color: #dc2626;
    font-weight: 600;
}

.table-note {
    margin-top: 1rem;
    text-align: center;
    color: #64748b;
}

/* Demands section styling */
.demands-list {
    margin: 2rem 0;
}

.demand-item {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid #3b82f6;
}

.demand-item h4 {
    color: #1e40af;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 700;
}

.demand-item ul {
    margin: 0 0 0 1.5rem;
}

.demand-item li {
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.urgency-note {
    background: linear-gradient(135deg, #fef3c7 0%, #fcd34d 100%);
    border: 1px solid #f59e0b;
    border-radius: 8px;
    padding: 1.5rem;
    margin: 2rem 0;
    text-align: center;
}

.urgency-note p {
    margin: 0;
    color: #92400e;
    font-size: 1.1rem;
    font-weight: 500;
}

/* Curriculum analysis styling */
.curriculum-analysis {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.curriculum-analysis h4 {
    color: #1e40af;
    margin-bottom: 1.5rem;
    text-align: center;
    font-size: 1.2rem;
}

.subject-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.subject-category {
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 1rem;
    border-left: 3px solid #3b82f6;
}

.subject-category h5 {
    color: #1e40af;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid #e2e8f0;
    padding-bottom: 0.5rem;
}

.subject-category ul {
    margin: 0;
    padding-left: 1rem;
}

.subject-category li {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    color: #374151;
}

/* Crisis points styling */
.crisis-points {
    margin: 2rem 0;
}

.crisis-item {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-left: 4px solid #dc2626;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.crisis-item h4 {
    color: #dc2626;
    margin-bottom: 1rem;
    font-size: 1.1rem;
    font-weight: 700;
}

.crisis-item p {
    margin: 0;
    color: #374151;
    line-height: 1.6;
}

/* Links */
a {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

a:hover {
    color: #1e40af;
    text-decoration: underline;
}

/* Signature section */
.signature-section {
    margin: 3rem 0;
    padding: 2rem;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 12px;
    border: 1px solid #cbd5e1;
}

.signature-section h3 {
    color: #1e3a8a;
    text-align: center;
    margin-bottom: 1rem;
    font-size: 1.6rem;
}

.signature-section > p {
    text-align: center;
    font-size: 1.1rem;
    color: #475569;
    margin-bottom: 2rem;
}

.form-container {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

/* Signature Form Styles */
.signature-form {
    max-width: 100%;
}

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

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

.form-group label {
    font-weight: 600;
    color: #374151;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 2px solid #e5e7eb;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.checkbox-group {
    margin: 1.5rem 0;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    font-size: 0.95rem;
    line-height: 1.5;
}

.checkbox-label input[type="checkbox"] {
    margin-right: 0.75rem;
    margin-top: 0.1rem;
    transform: scale(1.2);
}

.submit-btn {
    background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    width: 100%;
    position: relative;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(59, 130, 246, 0.3);
}

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

.submit-btn:disabled {
    background: #9ca3af;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-loading {
    display: none;
}

.success-message {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
}

.success-message h4 {
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.success-message p {
    margin: 0;
    opacity: 0.9;
}

.signature-info {
    background: rgba(255, 255, 255, 0.7);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #3b82f6;
}

.signature-info p strong {
    color: #1e40af;
    font-size: 1.1rem;
}

.signature-info ul {
    margin: 1rem 0 1rem 1.5rem;
}

.signature-info li {
    margin-bottom: 0.5rem;
    color: #475569;
}

.signature-info small {
    color: #64748b;
    font-style: italic;
}

/* GitHub Signature Styles */
.github-signature-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin: 2rem 0;
}

.signature-steps {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #3b82f6;
}

.signature-steps h4 {
    color: #1e40af;
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.step-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.step-number {
    background: #3b82f6;
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    margin-right: 1rem;
    flex-shrink: 0;
}

.step-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.step-content h5 {
    color: #1e40af;
    margin-bottom: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
}

.step-content p {
    margin: 0;
    color: #374151;
}

.github-edit-btn {
    display: inline-block;
    background: linear-gradient(135deg, #24292e 0%, #1a1e22 100%);
    color: white !important;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none !important;
    font-weight: 600;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    font-size: 0.95rem;
}

.github-edit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(36, 41, 46, 0.3);
    color: white !important;
}

.code-template {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    padding: 1rem;
    margin-top: 0.5rem;
}

.code-template pre {
    margin: 0;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, monospace;
    font-size: 0.85rem;
    color: #374151;
    overflow-x: auto;
}

.github-benefits {
    background: rgba(34, 197, 94, 0.05);
    border: 1px solid rgba(34, 197, 94, 0.2);
    border-radius: 8px;
    padding: 1.5rem;
    border-left: 4px solid #22c55e;
}

.github-benefits h4 {
    color: #15803d;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.github-benefits ul {
    margin: 0;
    padding-left: 1.5rem;
}

.github-benefits li {
    margin-bottom: 0.75rem;
    color: #374151;
    line-height: 1.5;
}

.github-benefits strong {
    color: #15803d;
}

/* Signatures Display */
.signatures-display {
    margin: 3rem 0;
    padding: 2rem;
    background: #f8fafc;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
}

.signatures-display h3 {
    color: #1e3a8a;
    text-align: center;
    margin-bottom: 1rem;
    font-size: 1.6rem;
}

.signature-count {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 600;
    color: #475569;
    margin-bottom: 2rem;
}

.signatures-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.signature-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #3b82f6;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.signature-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.signature-name {
    font-weight: 700;
    color: #1e40af;
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.signature-program {
    color: #64748b;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.signature-status {
    display: inline-block;
    background: #e0e7ff;
    color: #3730a3;
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
}

.signature-comment {
    color: #374151;
    font-size: 0.9rem;
    font-style: italic;
    line-height: 1.4;
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid #f1f5f9;
}

.signature-date {
    color: #94a3b8;
    font-size: 0.8rem;
    margin-top: 0.5rem;
}

.loading-signatures {
    text-align: center;
    color: #64748b;
    font-style: italic;
    grid-column: 1 / -1;
    padding: 2rem;
}

.load-more-container {
    text-align: center;
}

.load-more-btn {
    background: #f1f5f9;
    color: #475569;
    border: 2px solid #e2e8f0;
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.load-more-btn:hover {
    background: #e2e8f0;
    border-color: #cbd5e1;
    transform: translateY(-1px);
}

.error-message {
    background: #fef2f2;
    color: #dc2626;
    padding: 1rem;
    border-radius: 6px;
    border-left: 4px solid #dc2626;
    margin-top: 1rem;
}

/* Letter footer */
.letter-footer {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px solid #e2e8f0;
}

.letter-footer p:last-child {
    margin-top: 1rem;
}

/* Site footer */
.site-footer {
    background-color: #f8fafc;
    border-top: 1px solid #e2e8f0;
    padding: 2rem 0;
    text-align: center;
    color: #64748b;
    font-size: 0.9rem;
}

.site-footer small {
    display: block;
    margin-top: 0.5rem;
    color: #94a3b8;
}

/* Code styling */
code {
    background-color: #f1f5f9;
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.9em;
    color: #e11d48;
}

/* Enhanced table styling for larger screens */
@media (min-width: 1200px) {
    th, td {
        padding: 0.9rem 0.7rem;
        font-size: 0.95rem;
    }
    
    th {
        font-size: 0.9rem;
    }
}

/* Responsive design */
@media (max-width: 1024px) {
    .table-container {
        overflow-x: auto;
    }
    
    th, td {
        font-size: 0.82rem;
        padding: 0.5rem 0.4rem;
    }
    
    th {
        font-size: 0.78rem;
    }
}

@media (max-width: 767px) {
    .container {
        width: 95%;
        padding: 0 1rem;
    }
    
    header {
        padding: 2rem 0;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    h2 {
        font-size: 1.6rem;
    }
    
    h3 {
        font-size: 1.3rem;
    }
    
    .letter-content {
        padding: 0 0.5rem;
    }
    
    .comparison-table {
        padding: 1rem;
        margin: 2rem -0.5rem;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    th, td {
        padding: 0.5rem 0.3rem;
        font-size: 0.8rem;
    }
    
    th {
        font-size: 0.75rem;
    }
    
    /* Reset fixed widths on mobile */
    th, td {
        width: auto !important;
    }
    
    .signature-section {
        padding: 1.5rem;
        margin: 2rem 0;
    }
    
    .signature-section h3 {
        font-size: 1.4rem;
    }
    
    .form-container {
        padding: 0.5rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .form-container {
        padding: 1.5rem;
    }
    
    .signatures-list {
        grid-template-columns: 1fr;
    }
    
    .signatures-display {
        padding: 1.5rem;
    }
    
    .demand-item {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .demand-item h4 {
        font-size: 1rem;
    }
    
    .urgency-note {
        padding: 1rem;
        margin: 1.5rem 0;
    }
    
    .urgency-note p {
        font-size: 1rem;
    }
    
    .curriculum-analysis {
        padding: 1rem;
    }
    
    .subject-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .subject-category {
        padding: 0.75rem;
    }
    
    .crisis-item {
        padding: 1rem;
        margin-bottom: 1rem;
    }
    
    .crisis-item h4 {
        font-size: 1rem;
    }
    
    .github-signature-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        width: 100%;
        max-width: 100vw;
        overflow-x: hidden;
    }
    .signature-steps,
    .github-benefits {
        padding: 1rem;
        max-width: 100%;
        overflow-x: auto;
        box-sizing: border-box;
    }
    .step-item {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        max-width: 100%;
    }
    .step-number {
        margin-bottom: 0.5rem;
        margin-right: 0;
    }
    .step-number {
        width: 24px;
        height: 24px;
        font-size: 0.8rem;
        margin-right: 0;
    }
    
    .github-edit-btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    header h1 {
        font-size: 1.8rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    ul {
        margin-left: 1.5rem;
    }
    
    .comparison-table {
        padding: 0.8rem;
        margin: 1.5rem -5px;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    th, td {
        padding: 0.4rem 0.2rem;
        font-size: 0.75rem;
        width: auto !important;
    }
    
    th {
        font-size: 0.7rem;
    }
}

/* Print styles */
@media print {
    header {
        background: none !important;
        color: black !important;
        box-shadow: none !important;
    }
    
    .site-footer {
        display: none;
    }
    
    a {
        color: black !important;
        text-decoration: underline !important;
    }
    
    .comparison-table {
        background: none !important;
        border: 1px solid #ccc !important;
    }
    
    table {
        box-shadow: none !important;
    }
    
    th {
        background: #f0f0f0 !important;
        color: black !important;
    }
}