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

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --accent: #e8ff47;
    --border: #2a2a2a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

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

/* Header */
header {
    padding: 80px 0 60px;
    text-align: center;
}

.logo {
    font-size: 14px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 24px;
}

h1 {
    font-size: clamp(36px, 8vw, 64px);
    font-weight: 700;
    letter-spacing: -2px;
    margin-bottom: 16px;
}

h1 em {
    font-style: normal;
    color: var(--accent);
}

.subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* Projects Section */
.projects {
    padding: 40px 0 100px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.section-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.section-title {
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-secondary);
}

.section-divider {
    font-size: 12px;
    color: var(--text-secondary);
}

.project-count {
    font-size: 12px;
    color: var(--text-secondary);
}

.section-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Sort Toggle */
.sort-toggle {
    display: flex;
    position: relative;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: 8px;
}

.sort-toggle::before {
    content: "";
    position: absolute;
    top: 4px;
    left: 4px;
    width: calc(50% - 4px);
    height: calc(100% - 8px);
    background: var(--bg-card);
    border-radius: 6px;
    transition: transform 0.25s ease;
    z-index: 0;
}

.sort-toggle.right::before {
    transform: translateX(100%);
}

.sort-btn {
    position: relative;
    padding: 6px 16px;
    font-size: 12px;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s ease;
    z-index: 1;
}

.sort-btn:hover {
    color: var(--text-primary);
}

.sort-btn.active {
    color: var(--accent);
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

/* Project Card */
.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.card-preview {
    height: 200px;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.preview-iframe-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 400%;
    height: 400%;
    transform: scale(0.25);
    transform-origin: top left;
    pointer-events: none;
}

.preview-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: var(--bg-secondary);
}

.preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.8) 100%);
    z-index: 1;
    display: flex;
    align-items: flex-end;
    padding: 16px;
}

.project-card:hover .preview-overlay {
    background: linear-gradient(to bottom, rgba(232, 255, 71, 0.05) 0%, rgba(0, 0, 0, 0.85) 100%);
}

.card-content {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag {
    font-size: 10px;
    padding: 4px 10px;
    background: var(--bg-secondary);
    border-radius: 20px;
    color: var(--text-secondary);
}

.card-title-row {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-wrap: wrap;
}

.card-number {
    font-size: 12px;
    color: var(--accent);
    font-weight: 600;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.5px;
    color: #ffffff;
}

.card-divider {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

.card-category {
    font-size: 10px;
    letter-spacing: 1.5px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

.card-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.card-date {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: auto;
}

.card-footer {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding: 12px 16px;
    border-top: 1px solid var(--border);
}

.view-link {
    font-size: 12px;
    color: var(--accent);
    display: flex;
    align-items: center;
    gap: 6px;
}

.view-link svg {
    width: 14px;
    height: 14px;
    transition: transform 0.2s ease;
}

.project-card:hover .view-link svg {
    transform: translateX(4px);
}

/* Footer */
footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
}

.footer-copyright {
    font-size: 12px;
    color: var(--text-secondary);
}

.footer-divider {
    font-size: 12px;
    color: var(--text-secondary);
}

.footer-link {
    font-size: 12px;
    color: var(--accent);
    text-decoration: none;
    transition: opacity 0.2s ease;
}

.footer-link:hover {
    opacity: 0.7;
}

/* Responsive - Tablet */
@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Responsive - Mobile */
@media (max-width: 640px) {
    header {
        padding: 60px 0 40px;
    }

    .section-header {
        flex-direction: column;
        gap: 16px;
        align-items: flex-start;
    }

    .section-right {
        width: 100%;
    }

    .sort-toggle {
        width: 100%;
    }

    .sort-btn {
        flex: 1;
    }

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

    .card-preview {
        height: 140px;
    }

    .preview-iframe-wrapper {
        width: 500%;
        height: 500%;
        transform: scale(0.2);
    }
}