/* Watts to Analyze - Main Stylesheet */

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

/* CSS Variables */
:root {
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --secondary: #10b981;
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --border: #334155;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

/* Base Styles */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1e3a8a 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Header */
header {
    text-align: center;
    padding: 4rem 2rem 3rem;
    position: relative;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.logo svg {
    width: 48px;
    height: 48px;
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #60a5fa 0%, #10b981 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tagline {
    font-size: 1.25rem;
    color: var(--text-secondary);
    font-weight: 300;
    margin-top: 0.5rem;
}

/* Section Title */
.section-title {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 2rem;
    text-align: center;
}

/* Blog Grid */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

/* Blog Cards */
.blog-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.blog-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.blog-card:hover::before {
    transform: scaleX(1);
}

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

/* Coming Soon Cards */
.blog-card.coming-soon {
    opacity: 0.6;
    cursor: default;
}

.blog-card.coming-soon:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--border);
}

.blog-card.coming-soon:hover::before {
    transform: scaleX(0);
}

.coming-soon-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(37, 99, 235, 0.3);
    color: #60a5fa;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Card Icon */
.card-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.card-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

/* Card Content */
.card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

/* Tags */
.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    background: rgba(37, 99, 235, 0.2);
    color: #60a5fa;
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Card Link */
.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: gap 0.3s ease;
}

.card-link:hover {
    gap: 0.75rem;
}

.card-link svg {
    width: 20px;
    height: 20px;
}

.card-link.disabled {
    opacity: 0.5;
    pointer-events: none;
    color: var(--text-secondary);
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 2rem;
    border-top: 1px solid var(--border);
    margin-top: 4rem;
}

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

/* Responsive */
@media (max-width: 768px) {
    .logo h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .blog-grid {
        grid-template-columns: 1fr;
    }
}