/* BESS-SKVE Portal - Stromfee.AI White Theme */

:root {
    --primary: #22d3ee;
    --primary-dark: #06b6d4;
    --secondary: #7c3aed;
    --bg-light: #ffffff;
    --bg-section: #f8fafc;
    --bg-card: #ffffff;
    --text-dark: #1e293b;
    --text-muted: #64748b;
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --border: #e2e8f0;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #f8fafc 0%, #ecfdf5 50%, #f0fdf4 100%);
    color: var(--text-dark);
    line-height: 1.6;
    min-height: 100vh;
}

body.has-main-nav {
    padding-top: 64px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4 { color: var(--text-dark); font-weight: 700; }
h1 span, h2 span { color: var(--primary); }

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #ffffff 0%, #ecfeff 50%, #f0fdfa 100%);
    padding: 80px 0 60px;
    text-align: center;
    border-bottom: 1px solid var(--border);
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 15px;
}

.hero-desc {
    max-width: 700px;
    margin: 0 auto 30px;
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(34, 211, 238, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(34, 211, 238, 0.4);
}

.btn-secondary {
    background: white;
    color: var(--primary-dark);
    border: 2px solid var(--primary);
}

.btn-secondary:hover {
    background: rgba(34, 211, 238, 0.1);
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: all 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

/* Feature Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
    border-color: var(--primary);
}

.feature-icon {
    font-size: 40px;
    margin-bottom: 15px;
}

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Sections */
section {
    padding: 60px 0;
}

section.alt-bg {
    background: var(--bg-section);
}

section h2 {
    text-align: center;
    font-size: 1.75rem;
    margin-bottom: 40px;
}

/* Highlight Boxes */
.highlight-box {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    border: 2px solid var(--success);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
}

.highlight-box.primary {
    background: linear-gradient(135deg, #ecfeff 0%, #cffafe 100%);
    border-color: var(--primary);
}

.highlight-value {
    font-size: 3rem;
    font-weight: 700;
    color: var(--success);
}

.highlight-box.primary .highlight-value {
    color: var(--primary-dark);
}

/* Analogy Box */
.analogy-box {
    background: #f0f9ff;
    border-left: 4px solid var(--primary);
    padding: 24px;
    border-radius: 0 12px 12px 0;
    margin: 20px 0;
}

.analogy-box h3 {
    color: var(--primary-dark);
    margin-bottom: 10px;
}

/* Warning Box */
.warning-box {
    background: #fffbeb;
    border: 2px solid var(--warning);
    border-radius: 12px;
    padding: 20px;
    margin: 20px 0;
}

.warning-box h3 {
    color: #92400e;
}

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.data-table th {
    background: var(--bg-section);
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: var(--text-dark);
    border-bottom: 2px solid var(--border);
}

.data-table td {
    padding: 15px;
    border-bottom: 1px solid var(--border);
}

.data-table tr:hover {
    background: rgba(34, 211, 238, 0.05);
}

/* Comparison Table */
.comparison-table {
    width: 100%;
    background: var(--bg-card);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.comparison-table td {
    padding: 18px;
    border-bottom: 1px solid var(--border);
}

.comparison-table .old {
    color: var(--danger);
    text-decoration: line-through;
}

.comparison-table .new {
    color: var(--success);
    font-weight: 700;
}

/* Steps */
.step-list {
    counter-reset: step;
}

.step-item {
    display: flex;
    gap: 20px;
    margin: 25px 0;
    counter-increment: step;
}

.step-num {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    flex-shrink: 0;
}

.step-content h4 {
    margin-bottom: 8px;
}

.step-content p {
    color: var(--text-muted);
}

/* FAQ */
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    margin: 15px 0;
    border-radius: 12px;
    overflow: hidden;
}

.faq-q {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    transition: background 0.2s;
}

.faq-q:hover {
    background: var(--bg-section);
}

.faq-a {
    padding: 0 20px 20px;
    color: var(--text-muted);
    display: none;
}

.faq-item.open .faq-a {
    display: block;
}

/* Code Block */
.code-block {
    background: #1e293b;
    color: #e2e8f0;
    padding: 20px;
    border-radius: 12px;
    font-family: 'Monaco', 'Consolas', monospace;
    font-size: 13px;
    overflow-x: auto;
    margin: 15px 0;
}

.code-block .comment { color: #64748b; }
.code-block .command { color: var(--success); }
.code-block .url { color: var(--primary); }

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    padding: 60px 0;
    text-align: center;
    color: white;
}

.cta-section h2 {
    color: white;
    margin-bottom: 15px;
}

.cta-section p {
    opacity: 0.9;
    margin-bottom: 30px;
}

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

.cta-section .btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

/* Footer */
.site-footer {
    background: white;
    border-top: 1px solid var(--border);
    padding: 40px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.site-footer h4 {
    color: var(--primary-dark);
    margin-bottom: 15px;
    font-size: 14px;
}

.site-footer p, .site-footer a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 14px;
    display: block;
    margin-bottom: 8px;
}

.site-footer a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 13px;
}

/* Highlight Banner */
.highlight-banner {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    padding: 20px 0;
    border-bottom: 1px solid rgba(34, 197, 94, 0.3);
}

.banner-grid {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}

.banner-item {
    text-align: center;
}

.banner-item .icon {
    font-size: 28px;
}

.banner-item .label {
    font-weight: 600;
    color: var(--text-dark);
    font-size: 14px;
}

.banner-item .sub {
    color: var(--text-muted);
    font-size: 12px;
}

/* Info Box */
.info-box {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 30px;
    margin: 20px 0;
}

.info-box.bordered {
    border: 2px solid var(--primary);
}

/* Tech Grid */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.tech-item {
    background: var(--bg-section);
    padding: 15px;
    border-radius: 10px;
    text-align: center;
}

.tech-item strong {
    color: var(--primary-dark);
    display: block;
    margin-bottom: 5px;
}

.tech-item span {
    color: var(--text-muted);
    font-size: 13px;
}

/* Hero Video Grid */
.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

/* Responsive */
@media (max-width: 968px) {
    .hero-grid,
    .hero > .container > div[style*="grid-template-columns: 1fr 1fr"] {
        display: block !important;
    }
    .hero > .container > div > div:last-child {
        margin-top: 30px;
    }
}

@media (max-width: 768px) {
    .hero h1 { font-size: 1.75rem; }
    .hero-subtitle { font-size: 1rem; }
    section { padding: 40px 0; }
    .feature-grid { grid-template-columns: 1fr; }
    .banner-grid { gap: 30px; }
    .comparison-table { font-size: 14px; }
}