/* LMS Image Guide - Styles */

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

:root {
    --primary: #0066CC;
    --primary-dark: #004D99;
    --primary-light: #E6F0FA;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --white: #FFFFFF;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --radius: 8px;
    --radius-lg: 12px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
}

/* Login Screen */
.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 20px;
}

.login-screen.hidden {
    display: none;
}

.login-card {
    background: var(--white);
    padding: 48px 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
    max-width: 400px;
    width: 100%;
}

.login-logo {
    font-size: 48px;
    margin-bottom: 16px;
}

.login-card h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.login-card p {
    color: var(--gray-500);
    margin-bottom: 32px;
}

.login-card input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    font-size: 16px;
    margin-bottom: 16px;
    transition: border-color 0.2s;
}

.login-card input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.login-card button {
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: var(--white);
    border: none;
    border-radius: var(--radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.login-card button:hover {
    background: var(--primary-dark);
}

.login-card .error {
    color: var(--danger);
    font-size: 14px;
    margin-top: 12px;
    display: block;
}

/* App */
.app {
    display: none;
}

.app.visible {
    display: block;
}

/* Header */
.header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 0 32px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 600;
    color: var(--primary);
    padding: 16px 0;
}

.nav {
    display: flex;
    gap: 8px;
    padding-bottom: 16px;
    overflow-x: auto;
}

.nav-link {
    padding: 8px 16px;
    color: var(--gray-600);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    border-radius: var(--radius);
    white-space: nowrap;
    transition: all 0.2s;
}

.nav-link:hover {
    background: var(--gray-100);
    color: var(--gray-900);
}

.nav-link.active {
    background: var(--primary-light);
    color: var(--primary);
}

/* Main Content */
.main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 32px;
}

.section {
    display: none;
}

.section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    margin-bottom: 40px;
}

.section-header h1 {
    font-size: 32px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.section-header p {
    font-size: 18px;
    color: var(--gray-500);
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

.info-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    transition: all 0.2s;
}

.info-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.card-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.info-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.info-card p {
    color: var(--gray-600);
    font-size: 14px;
}

/* Quick Links */
.quick-links {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.quick-links h2 {
    font-size: 20px;
    margin-bottom: 24px;
}

.link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.quick-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    background: var(--gray-50);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--gray-800);
    font-weight: 500;
    transition: all 0.2s;
}

.quick-link:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.link-icon {
    font-size: 24px;
}

/* Content Blocks */
.content-block {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    margin-bottom: 24px;
}

.content-block h2 {
    font-size: 20px;
    margin-bottom: 20px;
}

/* Color Palette */
.color-palette {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.color-swatch {
    text-align: center;
}

.swatch {
    width: 80px;
    height: 80px;
    border-radius: var(--radius);
    margin-bottom: 8px;
    border: 1px solid var(--gray-200);
}

.color-name {
    display: block;
    font-weight: 500;
    font-size: 14px;
}

.color-hex {
    display: block;
    font-size: 12px;
    color: var(--gray-500);
    font-family: monospace;
}

/* Typography Samples */
.type-samples {
    display: flex;
    gap: 32px;
    flex-wrap: wrap;
}

.type-sample {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.type-label {
    font-size: 12px;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Checklist */
.checklist {
    list-style: none;
}

.checklist li {
    padding: 12px 0;
    padding-left: 32px;
    position: relative;
    border-bottom: 1px solid var(--gray-100);
}

.checklist li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.checklist li:last-child {
    border-bottom: none;
}

/* Tip Box */
.tip-box {
    display: flex;
    gap: 16px;
    padding: 20px 24px;
    background: var(--primary-light);
    border-radius: var(--radius);
    margin-top: 24px;
}

.tip-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.tip-content {
    font-size: 14px;
}

.tip-content code {
    background: var(--white);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
}

/* Warning Box */
.warning-box {
    display: flex;
    gap: 16px;
    padding: 20px 24px;
    background: #FEF3C7;
    border-radius: var(--radius);
    margin-top: 24px;
}

.warning-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.warning-content {
    font-size: 14px;
}

.warning-content ul {
    margin-top: 8px;
    margin-left: 20px;
}

.warning-content li {
    margin-bottom: 4px;
}

/* Source Cards */
.source-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 24px;
}

.source-card {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.source-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.source-icon {
    font-size: 28px;
}

.source-header h3 {
    font-size: 18px;
    font-weight: 600;
    flex: 1;
}

.badge {
    padding: 4px 10px;
    background: var(--success);
    color: var(--white);
    font-size: 11px;
    font-weight: 600;
    border-radius: 20px;
    text-transform: uppercase;
}

.badge.secondary {
    background: var(--warning);
}

.source-card > p {
    color: var(--gray-600);
    font-size: 14px;
    margin-bottom: 16px;
}

.source-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.source-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--gray-50);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--gray-800);
    font-weight: 500;
    transition: all 0.2s;
}

.source-link:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.link-arrow {
    color: var(--gray-400);
}

.best-for {
    font-size: 13px;
    color: var(--gray-500);
    padding-top: 12px;
    border-top: 1px solid var(--gray-100);
}

/* Tool Feature */
.tool-feature {
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    padding: 32px;
    margin-bottom: 24px;
}

.tool-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.tool-logo {
    width: 48px;
    height: 48px;
}

.tool-header h2 {
    font-size: 24px;
    margin-bottom: 4px;
}

.tool-header p {
    color: var(--gray-500);
    font-size: 14px;
}

.btn-primary {
    padding: 12px 24px;
    background: var(--primary);
    color: var(--white);
    text-decoration: none;
    border-radius: var(--radius);
    font-weight: 600;
    margin-left: auto;
    transition: background 0.2s;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

.tool-steps h3 {
    font-size: 18px;
    margin-bottom: 20px;
}

.step-card {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--gray-50);
    border-radius: var(--radius);
    margin-bottom: 12px;
}

.step-number {
    width: 32px;
    height: 32px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    flex-shrink: 0;
}

.step-content h4 {
    font-weight: 600;
    margin-bottom: 4px;
}

.step-content p {
    color: var(--gray-600);
    font-size: 14px;
}

/* Mini Tools */
.other-tools {
    margin-top: 32px;
}

.other-tools h3 {
    font-size: 18px;
    margin-bottom: 16px;
}

.mini-tool-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.mini-tool {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    background: var(--gray-50);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--gray-800);
    text-align: center;
    transition: all 0.2s;
}

.mini-tool:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.mini-icon {
    font-size: 28px;
    margin-bottom: 8px;
}

.mini-tool span:nth-child(2) {
    font-weight: 600;
}

.mini-desc {
    font-size: 12px;
    color: var(--gray-500);
    margin-top: 4px;
}

/* Specs Table */
.specs-table {
    background: var(--white);
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    overflow: hidden;
    margin-bottom: 32px;
}

.spec-row {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    padding: 16px 24px;
    border-bottom: 1px solid var(--gray-100);
}

.spec-row.header {
    background: var(--gray-50);
    font-weight: 600;
    font-size: 13px;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.spec-row:last-child {
    border-bottom: none;
}

/* Format Grid */
.format-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.format-card {
    padding: 20px;
    background: var(--gray-50);
    border-radius: var(--radius);
}

.format-card h4 {
    font-weight: 600;
    margin-bottom: 8px;
}

.format-card p {
    font-size: 14px;
    color: var(--gray-600);
    margin-bottom: 12px;
}

.use-for {
    font-size: 12px;
    color: var(--gray-500);
}

/* Do's and Don'ts */
.dos-donts-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 48px;
}

.dos-column, .donts-column {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.dos-column {
    border-top: 4px solid var(--success);
}

.donts-column {
    border-top: 4px solid var(--danger);
}

.dos-column h2, .donts-column h2 {
    font-size: 20px;
    margin-bottom: 24px;
}

.dos-list, .donts-list {
    list-style: none;
}

.dos-list li, .donts-list li {
    padding: 16px 0;
    border-bottom: 1px solid var(--gray-100);
}

.dos-list li:last-child, .donts-list li:last-child {
    border-bottom: none;
}

.dos-list strong, .donts-list strong {
    display: block;
    margin-bottom: 4px;
}

.dos-list p, .donts-list p {
    font-size: 14px;
    color: var(--gray-500);
}

/* Escalation */
.examples-section {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
}

.examples-section h2 {
    font-size: 20px;
    margin-bottom: 24px;
}

.escalation-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.escalation-item {
    display: flex;
    gap: 16px;
    padding: 20px;
    background: var(--gray-50);
    border-radius: var(--radius);
}

.escalation-icon {
    font-size: 28px;
    flex-shrink: 0;
}

.escalation-item strong {
    display: block;
    margin-bottom: 4px;
}

.escalation-item p {
    font-size: 14px;
    color: var(--gray-500);
}

/* Footer */
.footer {
    text-align: center;
    padding: 40px 32px;
    color: var(--gray-500);
    font-size: 14px;
}

.footer a {
    color: var(--primary);
}

/* Responsive */
@media (max-width: 768px) {
    .header {
        padding: 0 16px;
    }
    
    .main {
        padding: 24px 16px;
    }
    
    .dos-donts-grid {
        grid-template-columns: 1fr;
    }
    
    .spec-row {
        grid-template-columns: 1fr 1fr;
        gap: 8px;
    }
    
    .spec-row.header {
        display: none;
    }
    
    .tool-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .btn-primary {
        margin-left: 0;
        width: 100%;
        text-align: center;
    }
}