/* Sleek Minimal Design with Light Premium Green Tinge */

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

:root {
    /* Premium Light Green Palette */
    --primary-green: #10b981;
    --light-green: #d1fae5;
    --green-tinge: #f0fdf4;
    --accent-green: #059669;
    --dark-green: #047857;
    
    /* Supporting Colors */
    --primary-blue: #3b82f6;
    --secondary-purple: #8b5cf6;
    --accent-orange: #f59e0b;
    --warm-red: #ef4444;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
    
    /* Text Colors */
    --text-primary: #111827;
    --text-secondary: #374151;
    --text-muted: #6b7280;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--white) 0%, var(--green-tinge) 100%);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 { font-size: 3rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.25rem; }

p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    line-height: 1;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--accent-green) 100%);
    color: white;
    box-shadow: var(--shadow-lg);
}

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

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

.btn-xl {
    padding: 1.5rem 3rem;
    font-size: 1.25rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* Hero Section */
.hero {
    padding: 3rem 0 5rem;
    background: linear-gradient(135deg, var(--white) 0%, var(--light-green) 50%, var(--green-tinge) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
}

.conference-badge {
    display: inline-block;
    background: var(--primary-green);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.highlight {
    color: var(--primary-green);
    position: relative;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.5;
}

/* Benefits List */
.benefits-list {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    background: var(--white);
    border-radius: 25px;
    box-shadow: var(--shadow-md);
    border: 2px solid var(--light-green);
}

.benefit-item i {
    color: var(--primary-green);
    font-size: 1.25rem;
}

.benefit-item span {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.875rem;
}

/* Hero CTA */
.hero-cta {
    text-align: left;
}

.trust-note {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Form Section */
.form-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
}

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

.form-header h2 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-size: 1.5rem;
}

.form-header p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

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

.form-group {
    margin-bottom: 1rem;
}

.form-input, .form-select {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: 12px;
    font-size: 0.875rem;
    font-family: inherit;
    background: var(--white);
    color: var(--text-primary);
    transition: all 0.3s ease;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input.error {
    border-color: var(--warm-red);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-input.success {
    border-color: var(--primary-green);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

/* Form Footer */
.form-footer {
    display: flex;
    justify-content: space-around;
    gap: 1rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.form-footer span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-footer i {
    color: var(--primary-green);
}

/* Features Section */
.features {
    padding: 4rem 0;
    background: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: linear-gradient(135deg, var(--white) 0%, var(--green-tinge) 100%);
    border: 2px solid var(--light-green);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-green);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.5rem;
    color: white;
}

.feature-icon.scheduling { background: linear-gradient(135deg, var(--primary-blue), #2563eb); }
.feature-icon.sel { background: linear-gradient(135deg, var(--warm-red), #dc2626); }
.feature-icon.college { background: linear-gradient(135deg, var(--primary-green), var(--accent-green)); }
.feature-icon.communication { background: linear-gradient(135deg, var(--secondary-purple), #7c3aed); }

.feature-card h3 {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Preview Section */
.preview {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--green-tinge) 0%, var(--light-green) 100%);
}

.preview-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.preview-content h2 {
    margin-bottom: 3rem;
    color: var(--text-primary);
}

/* Code Preview */
.preview-code {
    background: var(--gray-900);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    margin-bottom: 3rem;
    text-align: left;
}

.code-header {
    background: var(--gray-700);
    color: var(--gray-300);
    padding: 1rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.code-content {
    padding: 2rem;
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
}

.prompt-example {
    margin-bottom: 2rem;
    padding-left: 1rem;
    border-left: 3px solid var(--primary-green);
}

.prompt-category {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary-green);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

.prompt-text {
    color: var(--gray-200);
    line-height: 1.5;
}

.cta-final {
    text-align: center;
}

.final-note {
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* FAQ Section */
.faq {
    padding: 4rem 0;
    background: var(--white);
}

.faq-grid {
    max-width: 700px;
    margin: 0 auto;
}

.faq-item {
    border: 2px solid var(--light-green);
    border-radius: 12px;
    margin-bottom: 1rem;
    overflow: hidden;
    background: var(--white);
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--primary-green);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    background: linear-gradient(135deg, var(--white) 0%, var(--green-tinge) 100%);
    transition: all 0.2s ease;
}

.faq-question:hover {
    background: var(--light-green);
}

.faq-question h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}

.faq-question i {
    color: var(--primary-green);
    transition: transform 0.2s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem 1.25rem;
    background: var(--white);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

.faq-answer p {
    line-height: 1.5;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Final CTA */
.final-cta {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--accent-green) 100%);
    color: white;
    text-align: center;
}

.cta-content h2 {
    color: white;
    margin-bottom: 1rem;
    font-size: 2.25rem;
}

.cta-content p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    margin-bottom: 2rem;
}

.final-cta .btn-primary {
    background: white;
    color: var(--primary-green);
    border: 2px solid white;
}

.final-cta .btn-primary:hover {
    background: var(--light-green);
    transform: translateY(-3px);
}

.final-trust {
    display: flex;
    justify-content: center;
    gap: 2rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

.final-trust span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: 2rem 0;
}

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

.footer-text {
    font-size: 0.875rem;
    color: var(--gray-400);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding: 2rem 0 3rem;
        min-height: auto;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
        text-align: center;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
        text-align: center;
    }
    
    .benefits-list {
        justify-content: center;
        gap: 1rem;
    }
    
    .hero-cta {
        text-align: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .final-trust {
        flex-direction: column;
        gap: 1rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .cta-content h2 {
        font-size: 1.875rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    .form-card {
        padding: 2rem 1.5rem;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
    
    .benefits-list {
        flex-direction: column;
        align-items: center;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

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

.animate-spin {
    animation: spin 1s linear infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus states for accessibility */
.btn:focus,
.form-input:focus,
.form-select:focus {
    outline: 2px solid var(--primary-green);
    outline-offset: 2px;
}

/* Loading states */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Subtle gradient overlays */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at top right, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero {
    position: relative;
}

/* Premium touches */
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-green), var(--accent-green));
    border-radius: 16px 16px 0 0;
}

.feature-card {
    position: relative;
}

/* Hover effects for interactive elements */
.form-input:hover {
    border-color: var(--primary-green);
}

.btn-primary {
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}