/* Modern Minimalist Quiz Styles - No Gradients */

/* CSS Variables for Modern Theme */
:root {
    --color-primary: #0EA5E9;
    --color-primary-dark: #0284C7;
    --color-primary-light: #E0F2FE;
    --color-secondary: #FB923C;
    --color-secondary-dark: #F97316;
    --color-secondary-light: #FED7AA;
    --color-success: #10B981;
    --color-success-light: #DCFCE7;
    --color-danger: #EF4444;
    --color-warning: #F59E0B;
    --color-warning-light: #FEF3C7;
    --color-background: #F8FAFC;
    --color-surface: #FFFFFF;
    --color-text: #1E293B;
    --color-text-secondary: #64748B;
    --color-border: #E2E8F0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-text);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-btn {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--radius-lg);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.nav-btn:hover {
    background: var(--color-primary);
    color: white;
    transform: translateY(-2px);
}

/* Main Content */
main {
    padding: 2rem 0;
    min-height: calc(100vh - 80px);
}

/* Cards */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

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

/* Hero Section */
.hero-section {
    text-align: center;
    padding: 4rem 1rem;
    margin-bottom: 3rem;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.hero-title span:first-child {
    color: var(--color-primary);
}

.hero-title span:last-child {
    color: var(--color-secondary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

.hero-illustration {
    width: 100%;
    max-width: 500px;
    margin: 2rem auto;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    background: var(--color-primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-primary);
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--color-text);
}

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

/* Quiz Cards Grid */
.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.quiz-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid var(--color-border);
    position: relative;
}

.quiz-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.quiz-card.locked {
    opacity: 0.6;
    cursor: not-allowed;
}

.quiz-card.completed {
    border: 2px solid var(--color-success);
}

.quiz-header {
    background: var(--color-primary);
    padding: 1.5rem;
    color: white;
    position: relative;
}

.quiz-month {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    color: white;
}

.quiz-theme {
    font-size: 0.875rem;
    opacity: 0.9;
    color: white;
}

.quiz-body {
    padding: 1.5rem;
}

.quiz-stats {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.stat-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: var(--color-background);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.stat-badge i {
    color: var(--color-primary);
}

.quiz-reward {
    padding: 1rem;
    background: var(--color-warning-light);
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.reward-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: #92400E;
    margin-bottom: 0.25rem;
}

.reward-name {
    font-weight: 600;
    color: #78350F;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1rem;
}

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

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

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

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

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

.btn-disabled {
    background: var(--color-border);
    color: var(--color-text-secondary);
    cursor: not-allowed;
    opacity: 0.6;
}

.btn-full {
    width: 100%;
}

/* How It Works Section */
.steps-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.step-card {
    text-align: center;
    position: relative;
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    margin: 0 auto 1rem;
}

.step-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: var(--color-primary-light);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-primary);
}

.step-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

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

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--color-surface);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-input.error {
    border-color: var(--color-danger);
}

.form-hint {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.error-message {
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-danger);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Quiz Question Styles */
.question-container {
    max-width: 800px;
    margin: 0 auto;
}

.question-header {
    text-align: center;
    margin-bottom: 2rem;
}

.question-counter {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-lg);
    font-weight: 600;
    margin-bottom: 1rem;
}

.question-text {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 2rem;
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.option-card {
    padding: 1.25rem;
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.option-card:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
    transform: translateX(8px);
}

.option-card.selected {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.option-letter {
    width: 36px;
    height: 36px;
    background: var(--color-background);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--color-primary);
}

.option-text {
    flex: 1;
    color: var(--color-text);
}

/* Progress Bar */
.progress-container {
    margin-bottom: 2rem;
}

.progress-bar {
    height: 8px;
    background: var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: var(--radius-lg);
    transition: width 0.5s ease;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

/* Success/Completion States */
.success-container {
    text-align: center;
    padding: 3rem 1rem;
}

.success-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
    background: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
    from {
        transform: scale(0);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.success-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--color-text);
}

.success-message {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 2rem;
}

/* Social Links */
.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
}

.social-link {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    text-decoration: none;
    font-size: 1.25rem;
}

.social-link.instagram {
    background: #E4405F;
    color: white;
}

.social-link.facebook {
    background: #1877F2;
    color: white;
}

.social-link.twitter {
    background: #1DA1F2;
    color: white;
}

.social-link:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: var(--shadow-lg);
}

/* Notifications */
.notification {
    position: fixed;
    top: 1rem;
    right: 1rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.notification.success {
    background: var(--color-success);
    color: white;
}

.notification.error {
    background: var(--color-danger);
    color: white;
}

.notification.info {
    background: var(--color-primary);
    color: white;
}

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

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    margin-top: 1rem;
    color: var(--color-text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    h3 { font-size: 1.25rem; }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .quiz-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .steps-container {
        grid-template-columns: 1fr;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .option-card:hover {
        transform: translateX(4px);
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 0.75rem;
    }
    
    .hero-section {
        padding: 2rem 1rem;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .quiz-header {
        padding: 1rem;
    }
    
    .quiz-body {
        padding: 1rem;
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    body {
        background: white;
    }
    
    header, .social-links, .btn, .notification {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid #000;
    }
}