:root {
    /* Light theme variables */
    --brand-blue: #2563eb;
    --light-blue: #60a5fa;
    --light-blue-bg: #f0f7ff;
    --neutral-50: #f8fafc;
    --neutral-100: #f1f5f9;
    --neutral-700: #334155;
    --success-500: #22c55e;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08);

    /* Dark theme variables */
    --dark-bg: #1a1a1a;
    --dark-card-bg: #2d2d2d;
    --darker-bg: #242424;
    --dark-text: #f3f4f6;
    --dark-muted: #d1d5db;
    --dark-border: #404040;
    --dark-input-bg: #333333;
    --dark-hover: #404040;
    --dark-shadow: rgba(0, 0, 0, 0.3);
    --dark-disabled-bg: #383838;
    
    /* Theme variables */
    --text-color: var(--neutral-700);
    --text-muted: #6b7280;
    --card-bg: white;
    --input-bg: white;
    --border-color: var(--neutral-100);
    --hover-bg: var(--light-blue-bg);
    --disabled-bg: var(--neutral-100);
}

/* Dark theme styles */
[data-theme="dark"] {
    --text-color: var(--dark-text);
    --text-muted: var(--dark-muted);
    --card-bg: var(--dark-card-bg);
    --input-bg: var(--dark-input-bg);
    --border-color: var(--dark-border);
    --hover-bg: var(--dark-hover);
    --disabled-bg: var(--dark-disabled-bg);
    background-color: var(--dark-bg);
    color: var(--dark-text);
}

[data-theme="dark"] .card {
    background-color: var(--dark-card-bg);
    color: var(--dark-text);
    box-shadow: 0 4px 6px var(--dark-shadow);
}

body {
    min-height: 100vh;
    background: var(--neutral-50);
    color: var(--neutral-700);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0.75rem;
    }
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.card {
    background: white;
    border-radius: 12px;
    padding: 1.25rem;
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    border: none;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    max-height: 300px;
    position: relative;
    overflow: visible;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card img {
    width: 60px;
    height: auto;
    margin: 0.75rem 0 1rem;
}

.card h2 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--brand-blue);
}

.card p {
    color: var(--neutral-700);
    line-height: 1.4;
    margin-bottom: 0;
    font-size: 0.9rem;
}

.card-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.beta-badge {
    position: absolute;
    top: -10px;
    right: -10px;
    padding: 0.25rem 0.5rem;
    background-color: var(--brand-blue);
    color: white;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.025em;
    box-shadow: var(--shadow-sm);
    z-index: 2;
}

/* Dark theme specific styles */
[data-theme="dark"] .card {
    background-color: var(--dark-card-bg);
    color: var(--dark-text);
    box-shadow: 0 4px 6px var(--dark-shadow);
}

[data-theme="dark"] .card p {
    color: var(--dark-muted);
}

[data-theme="dark"] .card h2 {
    color: var(--light-blue);
}

@media (max-width: 768px) {
    .cards {
        grid-template-columns: 1fr;
    }
    
    .card {
        padding: 1.25rem;
    }
}

#mainSelection {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

/* Stats section styles */
.stats-section {
    background: var(--light-blue-bg, rgba(164, 200, 234, 0.1));
    padding: 1.5rem 0;
    margin: 1.5rem 0;
    border-radius: 24px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item h4 {
    color: var(--brand-blue, #0078d4);
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: var(--text-color, #4a5568);
    font-size: 1.1rem;
    margin: 0;
}

/* Dark mode support for stats section */
[data-theme="dark"] .stats-section {
    background: rgba(164, 200, 234, 0.05);
}

[data-theme="dark"] .stat-item h4 {
    color: var(--brand-blue, #0078d4);
}

[data-theme="dark"] .stat-item p {
    color: var(--text-color, #e2e8f0);
}

/* Responsive adjustments for stats section */
@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .stats-section {
        padding: 1rem 1rem;
        margin: 1rem 0;
    }
}

/* How it works section styles */
.process-flow {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding: 1rem 0;
}

.process-step {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.process-step:hover {
    transform: translateX(10px);
    background-color: rgba(96, 165, 250, 0.1);
}

.process-step::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 50px;
    height: calc(100% + 1rem);
    width: 2px;
    background-color: var(--brand-blue);
    opacity: 0.3;
    z-index: 0;
}

.process-step:last-child::before {
    display: none;
}

.step-number {
    background-color: var(--brand-blue);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: bold;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
    box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.2);
    transition: all 0.3s ease;
}

.process-step:hover .step-number {
    transform: scale(1.1);
    box-shadow: 0 0 0 6px rgba(96, 165, 250, 0.3);
}

.process-content {
    flex: 1;
}

.process-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--brand-blue);
}

.process-content p {
    font-size: 0.95rem;
    color: var(--text-color);
    margin: 0;
}

.how-it-works-video-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background-color: var(--card-bg);
}

.how-it-works-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
}

.how-it-works-video-container .play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(255, 255, 255, 0.8);
    border: none;
    border-radius: 50%;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.how-it-works-video-container .play-button:hover {
    background-color: white;
    transform: translate(-50%, -50%) scale(1.1);
}

.how-it-works-video-container .play-button svg {
    color: var(--brand-blue);
}

.how-it-works-video-container .maximize-button {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background-color: rgba(255, 255, 255, 0.8);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
    transition: all 0.3s ease;
    opacity: 0;
}

.how-it-works-video-container:hover .maximize-button {
    opacity: 1;
}

.how-it-works-video-container .maximize-button:hover {
    background-color: white;
    transform: scale(1.1);
}

.how-it-works-video-container .maximize-button svg {
    color: var(--brand-blue);
}

/* Dark theme support for how it works section */
[data-theme="dark"] .process-content h3 {
    color: var(--light-blue);
}

[data-theme="dark"] .process-content p {
    color: var(--dark-muted);
}

[data-theme="dark"] .how-it-works-video-container {
    background-color: var(--dark-card-bg);
}

[data-theme="dark"] .how-it-works-video-container .play-button,
[data-theme="dark"] .how-it-works-video-container .maximize-button {
    background-color: rgba(45, 45, 45, 0.8);
}

[data-theme="dark"] .how-it-works-video-container .play-button:hover,
[data-theme="dark"] .how-it-works-video-container .maximize-button:hover {
    background-color: var(--dark-card-bg);
}

[data-theme="dark"] .how-it-works-video-container .play-button svg,
[data-theme="dark"] .how-it-works-video-container .maximize-button svg {
    color: var(--light-blue);
}

/* Dark theme adjustments */
[data-theme="dark"] .process-step:hover {
    background-color: rgba(96, 165, 250, 0.05);
}

[data-theme="dark"] .process-step::before {
    background-color: var(--light-blue);
    opacity: 0.2;
}

[data-theme="dark"] .step-number {
    box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.1);
}

[data-theme="dark"] .process-step:hover .step-number {
    box-shadow: 0 0 0 6px rgba(96, 165, 250, 0.15);
}

/* Responsive adjustments for how it works section */
@media (max-width: 991px) {
    .process-flow {
        margin-bottom: 3rem;
    }
    
    .how-it-works-video-container {
        max-width: 600px;
        margin: 0 auto;
    }
}

@media (max-width: 576px) {
    .process-step {
        gap: 1rem;
    }
    
    .step-number {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }
    
    .process-content h3 {
        font-size: 1.1rem;
    }
}

/* How it works section background pattern */
#how-it-works {
    position: relative;
    padding: 5rem 0;
    overflow: hidden;
}

.how-it-works-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.4;
    pointer-events: none;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(37, 99, 235, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(37, 99, 235, 0.1) 0%, transparent 50%);
    z-index: 0;
}

[data-theme="dark"] .how-it-works-bg-pattern {
    opacity: 0.2;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(96, 165, 250, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(96, 165, 250, 0.1) 0%, transparent 50%);
}

#how-it-works .container {
    position: relative;
    z-index: 1;
}