* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --bg-primary: #0D1117; --bg-secondary: #161B22; --bg-tertiary: #21262D; --bg-card: #1C2128;
    --border-color: #30363D; --border-hover: #484F58;
    --text-primary: #E6EDF3; --text-secondary: #8B949E; --text-muted: #6E7681;
    --accent-blue: #58A6FF; --accent-green: #3FB950; --accent-red: #F85149; 
    --accent-purple: #A371F7; --accent-orange: #DB6D28;
    --gradient-start: #8B5CF6; --gradient-end: #3B82F6;
    --shadow: 0 4px 12px rgba(0,0,0,0.3);
}

body { 
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; 
    background: linear-gradient(135deg, #0D1117 0%, #161B22 100%); 
    color: var(--text-primary); 
    min-height: 100vh; 
    padding: 15px; 
    line-height: 1.6;
}

.container { max-width: 1400px; margin: 0 auto; }
.section { animation: fadeIn 0.5s ease-in; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(15px); } to { opacity: 1; transform: translateY(0); } }

/* Input Section - Compact */
#input-section { text-align: center; padding: 40px 20px; }
.header { margin-bottom: 40px; }
.title { 
    font-size: 3rem; font-weight: 800; 
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)); 
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; 
    margin-bottom: 10px; display: flex; align-items: center; justify-content: center; gap: 15px; 
}
.title svg { width: 40px; height: 40px; fill: currentColor; -webkit-text-fill-color: var(--accent-blue); }
.subtitle { font-size: 1.2rem; color: var(--text-secondary); }
.input-container { display: flex; gap: 12px; max-width: 550px; margin: 0 auto 15px; }
.username-input { 
    flex: 1; padding: 14px 20px; background: var(--bg-secondary); 
    border: 2px solid var(--border-color); border-radius: 10px; 
    color: var(--text-primary); font-size: 1rem; transition: all 0.3s; 
}
.username-input:focus { outline: none; border-color: var(--accent-blue); box-shadow: 0 0 0 3px rgba(88, 166, 255, 0.1); }
.analyze-btn { 
    padding: 14px 32px; background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)); 
    border: none; border-radius: 10px; color: white; font-size: 1rem; font-weight: 600; 
    cursor: pointer; transition: all 0.3s; min-width: 130px; 
}
.analyze-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 16px rgba(139, 92, 246, 0.3); }
.loader { 
    width: 18px; height: 18px; border: 3px solid rgba(255, 255, 255, 0.3); 
    border-top-color: white; border-radius: 50%; display: inline-block; 
    animation: spin 0.7s linear infinite; 
}
@keyframes spin { to { transform: rotate(360deg); } }
.error-message { 
    background: rgba(248, 81, 73, 0.1); border: 1px solid var(--accent-red); color: var(--accent-red); 
    padding: 12px 18px; border-radius: 8px; margin-top: 15px; max-width: 550px; margin-left: auto; margin-right: auto; 
}
.examples { color: var(--text-muted); font-size: 0.9rem; margin-top: 12px; }

/* Loading - Compact */
.loading-container { text-align: center; padding: 80px 20px; }
.loading-spinner { 
    width: 50px; height: 50px; border: 4px solid var(--border-color); 
    border-top-color: var(--accent-blue); border-radius: 50%; 
    margin: 0 auto 25px; animation: spin 1s linear infinite; 
}
.loading-text { font-size: 1.5rem; font-weight: 600; margin-bottom: 8px; }

/* Results Header - Compact */
.user-header { 
    display: flex; align-items: center; gap: 15px; margin-bottom: 15px; 
    padding: 15px 20px; background: var(--bg-secondary); border-radius: 12px; 
    border: 1px solid var(--border-color); 
}
.user-avatar { width: 65px; height: 65px; border-radius: 50%; border: 3px solid var(--accent-blue); }
.user-name { font-size: 1.5rem; font-weight: 700; }
.user-username { color: var(--text-secondary); font-size: 1rem; }
.private-notice { 
    background: rgba(88, 166, 255, 0.08); border: 1px solid var(--accent-blue); 
    color: var(--accent-blue); padding: 10px 16px; border-radius: 8px; 
    margin-bottom: 15px; text-align: center; font-size: 0.9rem; 
}

.results-title { text-align: center; margin-bottom: 25px; }
.results-title h1 { 
    font-size: 2.5rem; font-weight: 800; 
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)); 
    -webkit-background-clip: text; -webkit-text-fill-color: transparent; 
    margin-bottom: 5px;
}
.results-title p { color: var(--text-secondary); font-size: 1rem; }

/* Visibility Controls - Compact */
.visibility-controls { display: flex; justify-content: center; gap: 10px; margin-bottom: 20px; }
.toggle-btn { 
    padding: 8px 16px; background: var(--bg-secondary); border: 1px solid var(--border-color); 
    border-radius: 6px; color: var(--text-primary); cursor: pointer; transition: all 0.2s; 
    font-size: 0.85rem; font-weight: 500;
}
.toggle-btn:hover { border-color: var(--accent-blue); transform: translateY(-1px); }

/* Persona Card */
.persona-card {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
    border: 2px solid var(--accent-blue);
    box-shadow: 0 0 25px rgba(88, 166, 255, 0.2);
    padding: 30px;
}
.persona-content {
    display: flex;
    align-items: center;
    gap: 25px;
}
.persona-icon {
    font-size: 3.5rem;
    background: rgba(88, 166, 255, 0.1);
    width: 90px;
    height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 2px solid var(--accent-blue);
    flex-shrink: 0;
}
.persona-info { flex: 1; }
.persona-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--accent-blue);
    background: linear-gradient(90deg, var(--text-primary), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.persona-desc {
    font-size: 1.2rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

body.light-theme .persona-title {
    background: linear-gradient(90deg, #000, var(--accent-blue));
    -webkit-background-clip: text;
}
body.light-theme .persona-desc {
    color: #444;
}

/* Collapsible Sections - Compact */
.collapsible-section { margin-bottom: 12px; }
.section-header { 
    background: var(--bg-secondary); padding: 14px 18px; border-radius: 10px; 
    border: 1px solid var(--border-color); cursor: pointer; 
    display: flex; justify-content: space-between; align-items: center; 
    transition: all 0.2s; 
}
.section-header:hover { border-color: var(--border-hover); transform: translateX(3px); }
.section-header h3 { font-size: 1.15rem; margin: 0; font-weight: 600; }
.toggle-icon { font-size: 1rem; transition: transform 0.3s; color: var(--text-secondary); }
.section-content { margin-top: 10px; }

/* Hero Stats - Grid Layout */
.hero-stats { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); 
    gap: 12px; 
}
.stat-card { 
    background: var(--bg-secondary); padding: 20px; border-radius: 12px; 
    border: 1px solid var(--border-color); text-align: center; 
    transition: all 0.3s; position: relative; overflow: hidden;
}
.stat-card::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
    opacity: 0; transition: opacity 0.3s;
}
.stat-card:hover { 
    transform: translateY(-3px); border-color: var(--accent-blue); 
    box-shadow: var(--shadow); 
}
.stat-card:hover::before { opacity: 1; }
.stat-card.main { 
    grid-column: span 2; 
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end)); 
    border: none;
}
.stat-number { font-size: 2.5rem; font-weight: 800; margin-bottom: 6px; color: white; }
.stat-card:not(.main) .stat-number { color: var(--accent-blue); }
.stat-label { font-size: 0.95rem; color: rgba(255, 255, 255, 0.85); font-weight: 500; }
.stat-card:not(.main) .stat-label { color: var(--text-secondary); }

/* Section Card - Compact */
.section-card { 
    background: var(--bg-secondary); padding: 20px; border-radius: 12px; 
    border: 1px solid var(--border-color); 
}

/* Code Changes - Improved Layout */
.code-changes-compact { 
    display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 12px; margin-bottom: 15px; 
}
.change-box { 
    background: var(--bg-card); padding: 16px; border-radius: 10px; 
    text-align: center; border: 1px solid var(--border-color);
    transition: all 0.2s;
}
.change-box:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.change-box.additions { border-left: 3px solid var(--accent-green); }
.change-box.deletions { border-left: 3px solid var(--accent-red); }
.change-box.net { border-left: 3px solid var(--accent-blue); }
.change-box .change-label { 
    color: var(--text-secondary); font-size: 0.85rem; margin-bottom: 6px; display: block;
}
.change-box .change-value { 
    font-size: 1.8rem; font-weight: 700; display: block; margin-bottom: 4px;
}
.change-box.additions .change-value { color: var(--accent-green); }
.change-box.deletions .change-value { color: var(--accent-red); }
.change-box.net .change-value { color: var(--accent-blue); }
.change-box .change-sublabel { color: var(--text-muted); font-size: 0.75rem; }

.changes-bar { 
    display: flex; height: 10px; border-radius: 5px; overflow: hidden; 
    background: var(--bg-tertiary); margin-top: 12px;
}
.additions-bar { background: var(--accent-green); transition: width 1s ease; }
.deletions-bar { background: var(--accent-red); transition: width 1s ease; }

/* Top Repos - Compact Grid */
.top-repos-grid { 
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; 
}
.repo-card { 
    background: var(--bg-card); padding: 16px; border-radius: 10px; 
    border: 1px solid var(--border-color); transition: all 0.2s; 
}
.repo-card:hover { border-color: var(--accent-blue); transform: translateX(3px); }
.repo-header { display: flex; justify-content: space-between; align-items: start; margin-bottom: 10px; gap: 10px; }
.repo-name { 
    font-size: 1.1rem; font-weight: 600; color: var(--accent-blue); 
    text-decoration: none; word-break: break-word; flex: 1;
}
.repo-name:hover { text-decoration: underline; }
.repo-badge { 
    background: var(--accent-purple); color: white; padding: 3px 10px; 
    border-radius: 12px; font-size: 0.75rem; font-weight: 600; white-space: nowrap;
}
.repo-stat { color: var(--text-secondary); font-size: 0.9rem; }
.repo-stat strong { color: var(--text-primary); font-size: 1.1rem; }

/* Stars & Forks - Compact */
.stars-forks-grid { 
    display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; 
}
.stat-box { 
    background: var(--bg-card); padding: 16px; border-radius: 10px; 
    text-align: center; border: 1px solid var(--border-color); transition: all 0.2s; 
}
.stat-box:hover { transform: translateY(-2px); border-color: var(--accent-blue); }
.stat-icon { font-size: 1.8rem; margin-bottom: 8px; }
.stat-box .stat-value { 
    font-size: 1.8rem; font-weight: 700; color: var(--accent-blue); margin-bottom: 4px; 
}
.stat-desc { color: var(--text-secondary); font-size: 0.85rem; }

/* Activity Items - Compact */
.activity-grid { 
    display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; 
}
.activity-item { 
    background: var(--bg-card); padding: 16px; border-radius: 10px; 
    display: flex; flex-direction: column; align-items: center; gap: 8px; 
    border: 1px solid var(--border-color); transition: all 0.2s;
}
.activity-item:hover { border-color: var(--border-hover); transform: translateY(-2px); }
.activity-icon { font-size: 1.5rem; }
.activity-label { color: var(--text-secondary); font-size: 0.85rem; }
.activity-count { font-size: 1.6rem; font-weight: 700; color: var(--accent-blue); }

/* Lists - Compact */
.created-repo-item, .org-item, .commit-message-item { 
    background: var(--bg-card); padding: 14px; border-radius: 8px; 
    border-left: 3px solid var(--accent-blue); margin-bottom: 10px; 
}
.created-repo-name, .org-name { 
    font-size: 1.05rem; font-weight: 600; color: var(--accent-blue); text-decoration: none; 
}
.created-repo-name:hover, .org-name:hover { text-decoration: underline; }
.created-repo-desc, .org-repos { 
    color: var(--text-secondary); margin: 6px 0; font-size: 0.85rem; 
}
.created-repo-stats, .org-stats { 
    display: flex; gap: 12px; font-size: 0.85rem; color: var(--text-secondary); 
}
.message-text { 
    font-family: 'Monaco', 'Courier New', monospace; font-size: 0.9rem; 
    color: var(--text-primary); flex: 1; 
}
.message-count { 
    background: var(--accent-blue); color: white; padding: 4px 12px; 
    border-radius: 12px; font-weight: 600; font-size: 0.85rem; 
}

/* Languages - Compact */
.language-item { 
    display: flex; align-items: center; gap: 12px; margin-bottom: 10px; 
}
.language-name { min-width: 100px; font-weight: 600; font-size: 0.9rem; }
.language-bar-container { 
    flex: 1; height: 24px; background: var(--bg-tertiary); 
    border-radius: 12px; overflow: hidden; 
}
.language-bar { 
    height: 100%; background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end)); 
    transition: width 1s ease; display: flex; align-items: center; padding: 0 12px; 
}
.language-percentage { color: white; font-weight: 600; font-size: 0.8rem; }

/* Monthly Chart - Compact */
.monthly-chart { 
    display: grid; grid-template-columns: repeat(12, 1fr); gap: 6px; 
}
.month-bar { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.month-bar-fill { 
    width: 100%; background: var(--bg-tertiary); border-radius: 6px 6px 0 0; 
    min-height: 80px; display: flex; flex-direction: column; justify-content: flex-end; 
}
.month-bar-inner { 
    background: linear-gradient(180deg, var(--accent-blue), var(--accent-purple)); 
    border-radius: 6px 6px 0 0; transition: height 1s ease; 
    display: flex; align-items: center; justify-content: center; min-height: 24px; 
}
.month-value { color: white; font-weight: 600; font-size: 0.8rem; }
.month-label { color: var(--text-secondary); font-size: 0.75rem; }

/* Contribution Split */
.contribution-split { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.contribution-item { 
    background: var(--bg-card); padding: 20px; border-radius: 10px; text-align: center; 
    border: 1px solid var(--border-color);
}
.contribution-label { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 10px; }
.contribution-value { font-size: 2.2rem; font-weight: 800; color: var(--accent-blue); }

/* Footer - Compact */
.footer { text-align: center; margin-top: 40px; padding: 30px 20px; }
.new-search-btn { 
    padding: 12px 32px; background: var(--bg-secondary); 
    border: 2px solid var(--border-color); border-radius: 10px; 
    color: var(--text-primary); font-size: 1rem; font-weight: 600; 
    cursor: pointer; transition: all 0.3s; margin-bottom: 15px; 
}
.new-search-btn:hover { border-color: var(--accent-blue); transform: translateY(-2px); }
.made-with { color: var(--text-muted); font-size: 0.9rem; }

/* Responsive */
@media (max-width: 768px) {
    .title { font-size: 2rem; flex-direction: column; gap: 10px; }
    .title svg { width: 32px; height: 32px; }
    .input-container { flex-direction: column; }
    .hero-stats { grid-template-columns: 1fr; }
    .stat-card.main { grid-column: span 1; }
    .code-changes-compact { grid-template-columns: 1fr; }
    .contribution-split, .top-repos-grid, .stars-forks-grid, .activity-grid { grid-template-columns: 1fr; }
    .monthly-chart { grid-template-columns: repeat(4, 1fr); }
    .persona-content { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
    .section-header h3 { font-size: 1rem; }
    .stat-number { font-size: 2rem; }
}

/* Quiz Section */
.quiz-container {
    margin: 30px 0;
    animation: fadeIn 0.6s ease-in;
}
.quiz-card {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    padding: 30px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    color: white;
}
.quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
}
.quiz-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0;
}
.quiz-progress {
    background: rgba(255,255,255,0.2);
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 600;
}
.quiz-question {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 25px;
    line-height: 1.4;
}
.quiz-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}
.quiz-option {
    background: rgba(255,255,255,0.15);
    border: 2px solid rgba(255,255,255,0.3);
    padding: 20px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
}
.quiz-option:hover {
    background: rgba(255,255,255,0.25);
    border-color: rgba(255,255,255,0.6);
    transform: translateY(-3px);
}
.quiz-option.correct {
    background: rgba(63, 185, 80, 0.3);
    border-color: var(--accent-green);
}
.quiz-option.wrong {
    background: rgba(248, 81, 73, 0.3);
    border-color: var(--accent-red);
}
.quiz-option.disabled {
    cursor: not-allowed;
    opacity: 0.6;
}
.quiz-result {
    background: rgba(255,255,255,0.15);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 20px;
}
.quiz-result h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}
.quiz-result p {
    font-size: 1.1rem;
    line-height: 1.6;
}
.quiz-btn {
    background: white;
    color: var(--gradient-start);
    border: none;
    padding: 14px 32px;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    width: 100%;
}
.quiz-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.3);
}

/* Activity Grid 5 columns */
.activity-grid-5 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 12px;
}

/* Summary Stats */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
}
.summary-item {
    background: var(--bg-card);
    padding: 18px;
    border-radius: 10px;
    border-left: 3px solid var(--accent-blue);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.summary-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.summary-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-blue);
}

/* Social Share Section */
.social-share-section {
    background: var(--bg-secondary);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    margin: 30px 0;
    text-align: center;
}
.share-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}
.share-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}
.share-btn {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}
.share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}
.share-btn.twitter:hover {
    border-color: #1DA1F2;
    background: rgba(29, 161, 242, 0.1);
}
.share-btn.linkedin:hover {
    border-color: #0077B5;
    background: rgba(0, 119, 181, 0.1);
}
.share-btn.copy:hover {
    border-color: var(--accent-green);
    background: rgba(63, 185, 80, 0.1);
}
.share-icon {
    font-size: 1.2rem;
}
.support-section {
    border-top: 1px solid var(--border-color);
    padding-top: 25px;
    margin-top: 25px;
}
.support-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
}
.support-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}
.support-btn {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border: none;
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}
.support-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(139, 92, 246, 0.3);
}
.support-btn span {
    font-size: 1.2rem;
}

/* Settings Bar */
.settings-bar {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    padding: 15px 0;
    margin-bottom: 20px;
}
.theme-toggle, .lang-toggle {
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--text-primary);
}
.theme-toggle:hover, .lang-toggle:hover {
    border-color: var(--accent-blue);
    transform: translateY(-2px);
}
#theme-icon, #lang-icon {
    font-size: 1.2rem;
}

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}
.modal-container {
    background: var(--bg-card);
    border-radius: 16px;
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
}
.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.modal-header h3 { font-size: 1.2rem; font-weight: 700; margin: 0; }
.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
    padding: 0 10px;
}
.modal-close:hover { color: var(--text-primary); }
.modal-body {
    padding: 20px;
    overflow-y: auto;
    text-align: center;
    background: var(--bg-primary);
}
.modal-body img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}
.modal-footer {
    padding: 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 15px;
}
.modal-btn {
    flex: 1;
    padding: 12px;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    transition: all 0.2s;
}
.modal-btn.primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
}
.modal-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(139, 92, 246, 0.3);
}
.modal-btn.secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.modal-btn.secondary:hover {
    border-color: var(--accent-blue);
}

/* Toast Notification */
.toast-notification {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-card);
    border: 1px solid var(--accent-green);
    color: var(--text-primary);
    padding: 16px 24px;
    border-radius: 50px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 2000;
    opacity: 0;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}
.toast-notification.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}
.toast-icon {
    font-size: 1.4rem;
}
.toast-message {
    font-weight: 500;
    font-size: 1rem;
}

/* Light Theme */
body.light-theme {
    background: linear-gradient(135deg, #F6F8FA 0%, #FFFFFF 100%);
    --bg-primary: #FFFFFF;
    --bg-secondary: #F6F8FA;
    --bg-tertiary: #E1E4E8;
    --bg-card: #FFFFFF;
    --border-color: #D0D7DE;
    --border-hover: #8C959F;
    --text-primary: #24292F;
    --text-secondary: #57606A;
    --text-muted: #6E7781;
}
body.light-theme .stat-card.main {
    background: linear-gradient(135deg, #8B5CF6, #3B82F6);
    color: white;
}
body.light-theme .quiz-card {
    background: linear-gradient(135deg, #8B5CF6, #3B82F6);
}
body.light-theme .support-btn {
    background: linear-gradient(135deg, #8B5CF6, #3B82F6);
}
body.light-theme .persona-card {
    background: linear-gradient(135deg, #F0F7FF, #FFFFFF);
}