:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --card-bg: #1a1a1a;
    --text-primary: #E0E0E0;
    --text-secondary: #A0A0A0;
    --accent-green: #54d592;
    --accent-lime: #72e6a8;
    --border-color: #2A2F35;
    --gradient-primary: linear-gradient(90deg, var(--accent-green) 0%, var(--accent-lime) 100%);
    --gradient-hover: linear-gradient(90deg, #65dfab 0%, #83f0b8 100%);
    --font-family-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --border-radius: 12px;
    --shadow-light: rgba(0, 0, 0, 0.1) 0px 4px 12px;
    --shadow-dark: rgba(0, 0, 0, 0.3) 0px 8px 24px;
}

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

body {
    font-family: var(--font-family-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.3rem;
}

.logo img {
    height: 40px;
}

.logo h1 {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 24px;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

nav a:hover {
    color: var(--accent-green);
}

.settings-btn {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s ease;
    margin-left: 16px;
}

.settings-btn:hover {
    border-color: var(--accent-green);
    background: rgba(84, 213, 146, 0.1);
    transform: rotate(90deg);
}

/* Hero Section */
.hero {
    background: var(--bg-secondary);
    padding: 80px 0;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.pill-logo {
    margin: 0 auto 24px;
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-dark);
}

.pill-logo img {
    width: 70px;
    height: 70px;
    filter: brightness(1.2);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.hero-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.7;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 32px;
}

.badge {
    background: rgba(84, 213, 146, 0.1);
    border: 1px solid var(--accent-green);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

/* Disclaimer Banner */
.disclaimer-banner {
    background: linear-gradient(135deg, rgba(84, 213, 146, 0.1) 0%, rgba(255, 51, 102, 0.1) 100%);
    border-top: 2px solid var(--accent-green);
    border-bottom: 2px solid var(--accent-green);
    padding: 20px 0;
}

.disclaimer-content {
    display: flex;
    align-items: center;
    gap: 16px;
    max-width: 1200px;
    margin: 0 auto;
}

.disclaimer-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.disclaimer-text-content {
    color: var(--text-primary);
    line-height: 1.6;
}

.disclaimer-text-content strong {
    color: var(--accent-green);
}

.btn {
    padding: 14px 32px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

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

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

/* Learning Path Section */
.learning-path {
    padding: 60px 0;
    background: var(--bg-secondary);
}

.learning-path h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.learning-path > .container > p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.learning-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 40px;
}

.learning-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
}

.learning-card:hover {
    border-color: var(--accent-green);
    transform: translateX(4px);
}

.learning-card.completed {
    border-color: #52C41A;
    background: linear-gradient(135deg, var(--card-bg) 0%, rgba(82, 196, 26, 0.05) 100%);
}

.learning-card.expanded {
    border-color: var(--accent-green);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: var(--card-bg);
}

.card-icon {
    font-size: 2rem;
    min-width: 50px;
    text-align: center;
}

.card-header h3 {
    flex: 1;
    font-size: 1.3rem;
    color: var(--text-primary);
    margin: 0;
}

.expand-icon {
    font-size: 1.8rem;
    color: var(--accent-green);
    font-weight: 300;
    transition: transform 0.3s ease;
}

.learning-card.expanded .expand-icon {
    transform: rotate(45deg);
}

.card-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 24px;
}

.learning-card.expanded .card-content {
    max-height: 2000px;
    padding: 0 24px 24px 24px;
}

.card-content p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.card-content strong {
    color: var(--text-primary);
}

.card-content ul {
    list-style: none;
    margin: 16px 0;
}

.card-content ul li {
    padding: 8px 0;
    color: var(--text-secondary);
    line-height: 1.6;
}

.btn-small {
    padding: 10px 24px;
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 16px;
}

.btn-small:hover {
    background: var(--gradient-hover);
    transform: translateY(-2px);
}

.btn-small.completed {
    background: #52C41A;
}

.progress-tracker {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
    text-align: center;
}

.progress-tracker h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.progress-bar-container {
    background: var(--bg-primary);
    border-radius: 50px;
    height: 40px;
    overflow: hidden;
    position: relative;
    margin-bottom: 16px;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--gradient-primary);
    transition: width 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50px;
}

.progress-bar span {
    color: white;
    font-weight: 700;
    font-size: 1rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

#progress-message {
    color: var(--text-secondary);
    font-size: 1rem;
    margin: 0;
}

.completion-toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: 16px 32px;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: var(--shadow-dark);
    z-index: 10000;
    transition: bottom 0.3s ease;
}

.completion-toast.show {
    bottom: 30px;
}

/* Glossary Section */
.glossary-section {
    padding: 60px 0;
    background: var(--bg-primary);
}

.glossary-section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.glossary-section > .container > p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.glossary-search {
    max-width: 600px;
    margin: 0 auto 32px;
}

.glossary-search input {
    width: 100%;
    padding: 16px 20px;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.glossary-search input:focus {
    outline: none;
    border-color: var(--accent-green);
}

.glossary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.glossary-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    transition: all 0.3s ease;
}

.glossary-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-dark);
    border-color: var(--accent-green);
}

.glossary-card h3 {
    font-size: 1.3rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.glossary-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
}

.glossary-category {
    display: inline-block;
    background: rgba(84, 213, 146, 0.1);
    border: 1px solid var(--accent-green);
    color: var(--accent-green);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* Token Prices Section */
.token-prices {
    padding: 60px 0;
    background: var(--bg-primary);
}

.token-prices h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.token-prices > .container > p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}

.spinner {
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-green);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
}

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

.token-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.token-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    transition: all 0.3s ease;
}

.token-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-dark);
    border-color: var(--accent-green);
}

.token-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.token-header h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
}

.token-symbol {
    background: var(--gradient-primary);
    color: white;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
}

.token-price {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.token-change {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.token-change.positive {
    color: #52C41A;
}

.token-change.negative {
    color: var(--accent-red);
}

.token-market-cap {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Fee Calculator */
.fee-calculator {
    padding: 60px 0;
    background: var(--bg-secondary);
}

.fee-calculator h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.fee-calculator > .container > p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.calculator-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.calculator-form {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-green);
}

.calculator-results {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
}

.result-card h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.result-item {
    display: flex;
    justify-content: space-between;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.result-item.total {
    border-bottom: none;
    margin-top: 16px;
    padding-top: 24px;
    border-top: 2px solid var(--accent-green);
}

.result-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.result-value {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.1rem;
}

.result-item.total .result-value {
    color: var(--accent-green);
    font-size: 1.4rem;
}

.result-note {
    margin-top: 24px;
    padding: 16px;
    background: rgba(84, 213, 146, 0.1);
    border-radius: 8px;
}

.result-note p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Exchanges Section */
.exchanges {
    padding: 60px 0;
    background: var(--bg-primary);
}

.exchanges h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.exchange-intro {
    max-width: 800px;
    margin: 0 auto 40px;
    text-align: center;
    color: var(--text-secondary);
}

.disclaimer-box {
    background: rgba(84, 213, 146, 0.1);
    border: 1px solid var(--accent-green);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-top: 20px;
    text-align: left;
}

.disclaimer-box p {
    color: var(--text-primary);
    margin: 0;
    line-height: 1.6;
}

.exchange-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.exchange-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
    transition: all 0.3s ease;
}

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

.exchange-card h3 {
    font-size: 1.5rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.exchange-card > p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.exchange-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 20px;
    background: rgba(84, 213, 146, 0.05);
    padding: 16px;
    border-radius: 8px;
}

.stat {
    text-align: center;
    display: flex;
    flex-direction: column;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.stat-value {
    display: block;
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent-green);
}

.exchange-card ul {
    list-style: none;
    margin-bottom: 20px;
}

.exchange-card ul li {
    padding: 8px 0;
    padding-left: 24px;
    position: relative;
    color: var(--text-secondary);
}

.exchange-card ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-green);
    font-weight: 700;
}

.exchange-details {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.exchange-details p {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.exchange-details strong {
    color: var(--text-primary);
}

.protocol-rating {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.protocol-rating span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 600;
    font-size: 0.95rem;
}

/* Comparison Table */
.comparison-table {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
    overflow-x: auto;
}

.comparison-table h3 {
    font-size: 1.8rem;
    margin-bottom: 24px;
    color: var(--text-primary);
    text-align: center;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
}

.comparison-table th,
.comparison-table td {
    padding: 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table th {
    background: rgba(84, 213, 146, 0.1);
    color: var(--accent-green);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

.comparison-table td {
    color: var(--text-secondary);
}

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

.comparison-table tr:hover {
    background: rgba(84, 213, 146, 0.05);
}

/* Quiz Section */
.quiz-section {
    padding: 60px 0;
    background: var(--bg-secondary);
}

.quiz-section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.quiz-section > .container > p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.quiz-container {
    max-width: 700px;
    margin: 0 auto;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 40px;
}

.quiz-intro,
.quiz-questions,
.quiz-results {
    display: none;
    text-align: center;
}

.quiz-intro.active,
.quiz-questions.active,
.quiz-results.active {
    display: block;
}

.quiz-intro h3 {
    font-size: 1.8rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.quiz-intro p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.quiz-progress {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.question-container {
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 32px;
    text-align: left;
}

.answers-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 32px;
}

.answer-btn {
    padding: 16px 24px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
}

.answer-btn:hover:not(:disabled) {
    border-color: var(--accent-green);
    background: rgba(84, 213, 146, 0.1);
}

.answer-btn.correct {
    border-color: #52C41A;
    background: rgba(82, 196, 26, 0.1);
    color: #52C41A;
}

.answer-btn.incorrect {
    border-color: var(--accent-red);
    background: rgba(255, 51, 102, 0.1);
    color: var(--accent-red);
}

.answer-btn:disabled {
    cursor: not-allowed;
}

#next-question {
    width: 100%;
}

#next-question:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.quiz-results h3 {
    font-size: 2rem;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.quiz-results p {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

#quiz-score {
    color: var(--accent-green);
    font-weight: 700;
}

#quiz-feedback {
    margin-bottom: 32px;
}

.feedback-excellent { color: #52C41A; font-size: 1.2rem; }
.feedback-great { color: #52C41A; font-size: 1.2rem; }
.feedback-good { color: var(--accent-green); font-size: 1.2rem; }
.feedback-improve { color: var(--accent-red); font-size: 1.2rem; }

/* Portfolio Calculator Section */
.portfolio-section {
    padding: 60px 0;
    background: var(--bg-secondary);
}

.portfolio-section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.portfolio-section > .container > p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.portfolio-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}

.portfolio-form {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
}

.portfolio-form h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    color: var(--text-primary);
}

#portfolio-period-display {
    display: inline-block;
    margin-top: 8px;
    font-weight: 600;
    color: var(--accent-green);
}

.portfolio-results {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
}

.portfolio-results h3 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.result-big-card {
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    padding: 32px;
    text-align: center;
    margin-bottom: 24px;
}

.result-big-card .result-label {
    color: white;
    font-size: 0.9rem;
    margin-bottom: 8px;
    opacity: 0.9;
}

.result-big-value {
    color: white;
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
}

.result-breakdown {
    margin-bottom: 24px;
}

.portfolio-disclaimer {
    background: rgba(84, 213, 146, 0.1);
    border: 1px solid var(--accent-green);
    border-radius: var(--border-radius);
    padding: 16px;
}

.portfolio-disclaimer p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin: 0;
}

/* Achievements Section */
.achievements-section {
    padding: 60px 0;
    background: var(--bg-primary);
}

.achievements-section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.achievements-section > .container > p {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.achievement-card {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
}

.achievement-card.locked {
    opacity: 0.5;
    filter: grayscale(100%);
}

.achievement-card.unlocked {
    border-color: var(--accent-green);
    background: linear-gradient(135deg, var(--card-bg) 0%, rgba(84, 213, 146, 0.05) 100%);
    animation: unlockPulse 0.6s ease;
}

@keyframes unlockPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.achievement-icon {
    font-size: 3rem;
    margin-bottom: 12px;
}

.achievement-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.achievement-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.achievement-status {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    background: var(--border-color);
    color: var(--text-secondary);
}

.achievement-card.unlocked .achievement-status {
    background: var(--gradient-primary);
    color: white;
}

.achievement-toast {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(90deg, #52C41A 0%, #73D13D 100%);
    color: white;
    padding: 16px 32px;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: var(--shadow-dark);
    z-index: 10000;
    transition: bottom 0.3s ease;
}

.achievement-toast.show {
    bottom: 30px;
}

/* About Section */
.about-section {
    padding: 60px 0;
    background: var(--bg-primary);
}

.about-section h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 40px;
    color: var(--text-primary);
}

.about-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-bottom: 40px;
}

.about-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
    text-align: center;
    transition: all 0.3s ease;
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-dark);
    border-color: var(--accent-green);
}

.about-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.about-card h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

.contact-box {
    background: var(--card-bg);
    border: 2px solid var(--accent-green);
    border-radius: var(--border-radius);
    padding: 40px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.contact-box h3 {
    font-size: 1.8rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.contact-box p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.contact-box a {
    color: var(--accent-green);
    text-decoration: none;
    font-weight: 600;
}

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

.response-note {
    font-size: 0.95rem !important;
    color: var(--text-secondary);
    margin: 0 !important;
}

/* Footer */
footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 40px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 32px;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-logo img {
    height: 50px;
    width: 50px;
}

.footer-logo h2 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.footer-logo p {
    color: var(--text-secondary);
}

.footer-links h3,
.footer-legal h3 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.footer-links ul,
.footer-legal ul {
    list-style: none;
}

.footer-links li,
.footer-legal li {
    margin-bottom: 12px;
}

.footer-links a,
.footer-legal a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-links a:hover,
.footer-legal a:hover {
    color: var(--accent-green);
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.disclaimer-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 968px) {
    .calculator-container {
        grid-template-columns: 1fr;
    }
    
    .exchange-cards {
        grid-template-columns: 1fr;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    nav ul {
        gap: 12px;
        flex-wrap: wrap;
        font-size: 0.9rem;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero-badges {
        flex-direction: column;
        align-items: center;
    }
    
    .comparison-table {
        padding: 16px;
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: 12px 8px;
        font-size: 0.85rem;
    }
}

@media (max-width: 576px) {
    header .container {
        flex-direction: column;
        gap: 16px;
    }
    
    nav ul {
        justify-content: center;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-text {
        font-size: 1rem;
    }
    
    .token-grid {
        grid-template-columns: 1fr;
    }
    
    .exchange-stats {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .learning-card {
        margin: 0 -10px;
    }
    
    .card-header {
        padding: 16px;
    }
    
    .card-content {
        padding: 0 16px;
    }
    
    .learning-card.expanded .card-content {
        padding: 0 16px 16px 16px;
    }
    
    .about-card {
        padding: 24px;
    }
    
    .contact-box {
        padding: 24px;
    }
    
    .comparison-table {
        font-size: 0.8rem;
    }
    
    .comparison-table h3 {
        font-size: 1.4rem;
    }
    
    .completion-toast {
        left: 16px;
        right: 16px;
        transform: none;
        bottom: -100px;
        font-size: 0.9rem;
        padding: 12px 20px;
    }
    
    .completion-toast.show {
        bottom: 16px;
    }
    
    .portfolio-container {
        grid-template-columns: 1fr;
    }
}

/* Settings Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    color: var(--text-primary);
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.8rem;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.close-btn:hover {
    background: rgba(84, 213, 146, 0.1);
    color: var(--accent-green);
}

.modal-body {
    padding: 24px;
}

.settings-section {
    margin-bottom: 32px;
}

.settings-section:last-child {
    margin-bottom: 0;
}

.settings-section h3 {
    font-size: 1.3rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--border-color);
}

.setting-item:last-child {
    border-bottom: none;
}

.setting-item label {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.setting-item label > span:first-child {
    color: var(--text-primary);
    font-weight: 500;
}

.setting-description {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--border-color);
    transition: 0.3s;
    border-radius: 26px;
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: 0.3s;
    border-radius: 50%;
}

input:checked + .toggle-slider {
    background: var(--gradient-primary);
}

input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

.privacy-notice {
    background: rgba(84, 213, 146, 0.05);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 16px;
}

.btn-secondary {
    padding: 12px 24px;
    background: var(--bg-primary);
    border: 2px solid var(--accent-green);
    color: var(--accent-green);
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

.about-text {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 0.95rem;
}

.about-text strong {
    color: var(--text-primary);
    font-size: 1.1rem;
}

/* Light Theme */
body.light-theme {
    --bg-primary: #F5F5F5;
    --bg-secondary: #FFFFFF;
    --card-bg: #FFFFFF;
    --text-primary: #1A1A1A;
    --text-secondary: #666666;
    --border-color: #E0E0E0;
}

body.light-theme .disclaimer-banner {
    background: linear-gradient(135deg, rgba(84, 213, 146, 0.15) 0%, rgba(255, 51, 102, 0.15) 100%);
}