/* Projects page design system
   Primitive → semantic → component tokens keep this page aligned with the
   existing About and Works surfaces without changing their CSS. */
.project-page-unified {
    /* Primitives */
    --project-gray-25: #f8f9fa;
    --project-gray-50: #f5f5f5;
    --project-white: #ffffff;
    --project-slate-900: #2c3e50;
    --project-slate-700: #4d5b68;
    --project-slate-500: #74808a;
    --project-slate-200: #e3e7ea;
    --project-charcoal: #4a4a4a;
    --project-indigo-500: #667eea;
    --project-indigo-700: #4c5fc0;
    --project-indigo-100: #eff1ff;
    --project-blue-100: #edf4fa;
    --project-pink-100: #f8f0f5;
    --project-mint-100: #edf7f4;
    --project-amber-100: #fbf4e9;
    --project-space-1: 0.25rem;
    --project-space-2: 0.5rem;
    --project-space-3: 0.75rem;
    --project-space-4: 1rem;
    --project-space-5: 1.25rem;
    --project-space-6: 1.5rem;
    --project-space-8: 2rem;
    --project-space-10: 2.5rem;
    --project-space-12: 3rem;
    --project-radius-sm: 8px;
    --project-radius-md: 12px;
    --project-radius-lg: 16px;
    --project-shadow-card: 0 4px 20px rgba(0, 0, 0, 0.08);
    --project-shadow-hover: 0 12px 34px rgba(0, 0, 0, 0.13);
    --project-duration: 220ms;

    /* Semantic */
    --project-page-bg: var(--project-gray-50);
    --project-surface: var(--project-white);
    --project-text: var(--project-slate-900);
    --project-text-secondary: var(--project-slate-700);
    --project-text-muted: var(--project-slate-500);
    --project-border: var(--project-slate-200);
    --project-accent: var(--project-indigo-700);
    --project-accent-visual: var(--project-indigo-500);
    --project-action: var(--project-charcoal);

    /* Components */
    --project-card-bg: var(--project-surface);
    --project-card-radius: var(--project-radius-lg);
    --project-card-padding: var(--project-space-8);
    --project-button-bg: var(--project-action);
    --project-button-fg: var(--project-white);
    --project-button-radius: var(--project-radius-sm);
    background: var(--project-page-bg);
    color: var(--project-text);
}

.project-page-unified::selection {
    background: var(--project-indigo-100);
    color: var(--project-text);
}

.project-page-unified a:focus-visible {
    outline: 3px solid var(--project-accent);
    outline-offset: 3px;
}

.project-logo-link {
    text-decoration: none;
}

.project-nav-active::after {
    width: 60%;
    background: rgba(255, 255, 255, 0.95);
}

.project-main {
    background: var(--project-page-bg);
}

.project-page-section {
    min-height: 100vh;
    padding: 7rem 2rem 5rem;
    background: var(--project-page-bg);
}

.project-page-container {
    width: min(100%, 1100px);
    margin: 0 auto;
}

.project-page-header {
    max-width: 720px;
    margin: 0 auto var(--project-space-12);
    text-align: center;
}

.project-page-header h1 {
    margin: 0 0 var(--project-space-4);
    color: var(--project-text);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.15;
}

.project-page-header p {
    margin: 0;
    color: var(--project-text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
}

.featured-project {
    display: grid;
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: var(--project-space-12);
    align-items: center;
    padding: var(--project-space-12);
    border: 1px solid rgba(44, 62, 80, 0.04);
    border-radius: var(--project-card-radius);
    background: var(--project-card-bg);
    box-shadow: var(--project-shadow-card);
    transition: transform var(--project-duration) ease, box-shadow var(--project-duration) ease;
}

.featured-project:hover {
    transform: translateY(-6px);
    box-shadow: var(--project-shadow-hover);
}

.project-preview,
.project-tile-visual {
    position: relative;
    display: grid;
    place-items: center;
    overflow: hidden;
    border: 1px solid rgba(102, 126, 234, 0.12);
    border-radius: var(--project-radius-md);
}

.project-preview::before,
.project-tile-visual::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0.42;
    background-image:
        linear-gradient(rgba(102, 126, 234, 0.09) 1px, transparent 1px),
        linear-gradient(90deg, rgba(102, 126, 234, 0.09) 1px, transparent 1px);
    background-size: 24px 24px;
    mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.82), transparent);
}

.project-preview {
    min-height: 360px;
    color: var(--project-slate-700);
}

.project-preview-vision {
    background: linear-gradient(145deg, var(--project-indigo-100), var(--project-blue-100));
}

.project-preview svg,
.project-tile-visual svg {
    position: relative;
    z-index: 1;
    width: min(72%, 390px);
    fill: none;
    stroke: currentColor;
    stroke-width: 2.2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.project-preview .preview-accent,
.project-tile-visual .preview-accent {
    stroke: var(--project-accent-visual);
}

.project-preview-label,
.project-preview-caption {
    position: absolute;
    z-index: 2;
    left: var(--project-space-5);
    color: var(--project-text-muted);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.project-preview-label {
    top: var(--project-space-5);
}

.project-preview-caption {
    bottom: var(--project-space-5);
}

.featured-project-content {
    padding: var(--project-space-3) 0;
}

.project-type {
    margin: 0 0 var(--project-space-2);
    color: var(--project-accent);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.featured-project-content h2,
.project-tile-content h3,
.project-contact-card h2 {
    color: var(--project-text);
}

.featured-project-content h2 {
    margin: 0 0 var(--project-space-4);
    font-size: clamp(2rem, 4vw, 3.1rem);
    line-height: 1.08;
    letter-spacing: -0.035em;
}

.featured-project-content > p:not(.project-type),
.project-tile-content > p:not(.project-type) {
    color: var(--project-text-secondary);
    line-height: 1.7;
}

.featured-project-content > p:not(.project-type) {
    margin: 0;
    font-size: 1.02rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--project-space-2);
    margin: var(--project-space-5) 0 0;
    padding: 0;
    list-style: none;
}

.project-tags li {
    padding: 0.42rem 0.68rem;
    border: 1px solid var(--project-border);
    border-radius: 6px;
    background: var(--project-gray-25);
    color: var(--project-text-secondary);
    font-size: 0.78rem;
    font-weight: 500;
}

.project-button {
    display: inline-flex;
    min-height: 46px;
    align-items: center;
    justify-content: center;
    gap: var(--project-space-2);
    margin-top: var(--project-space-6);
    padding: 0.75rem 1.35rem;
    border: 1px solid var(--project-button-bg);
    border-radius: var(--project-button-radius);
    background: var(--project-button-bg);
    color: var(--project-button-fg);
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    transition: background var(--project-duration) ease, border-color var(--project-duration) ease, box-shadow var(--project-duration) ease;
}

.project-button svg {
    width: 17px;
    height: 17px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.project-button:hover {
    border-color: var(--project-text);
    background: var(--project-text);
    box-shadow: 0 5px 14px rgba(44, 62, 80, 0.18);
}

.selected-projects {
    margin-top: 5rem;
}

.selected-projects-header {
    max-width: 700px;
    margin: 0 auto var(--project-space-8);
    text-align: center;
}

.selected-projects-header h2 {
    margin: 0 0 var(--project-space-3);
    color: var(--project-text);
    font-size: 2rem;
    line-height: 1.2;
}

.selected-projects-header p {
    margin: 0;
    color: var(--project-text-secondary);
    line-height: 1.65;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--project-space-6);
}

.project-tile {
    min-height: 520px;
    display: flex;
    flex-direction: column;
    padding: var(--project-card-padding);
    border: 1px solid rgba(44, 62, 80, 0.04);
    border-radius: var(--project-card-radius);
    background: var(--project-card-bg);
    box-shadow: var(--project-shadow-card);
    transition: transform var(--project-duration) ease, box-shadow var(--project-duration) ease;
}

.project-tile:hover {
    transform: translateY(-6px);
    box-shadow: var(--project-shadow-hover);
}

.project-tile-visual {
    min-height: 210px;
    margin-bottom: var(--project-space-6);
    color: var(--project-slate-700);
}

.project-tile-visual svg {
    width: min(60%, 230px);
}

.project-visual-game {
    background: linear-gradient(145deg, var(--project-pink-100), var(--project-indigo-100));
}

.project-visual-portrait {
    background: linear-gradient(145deg, var(--project-indigo-100), var(--project-amber-100));
}

.project-visual-terminal {
    background: linear-gradient(145deg, var(--project-mint-100), var(--project-blue-100));
}

.project-visual-network {
    background: linear-gradient(145deg, var(--project-blue-100), var(--project-indigo-100));
}

.project-visual-prompt {
    background: linear-gradient(145deg, var(--project-indigo-100), var(--project-mint-100));
}

.project-heart {
    fill: rgba(102, 126, 234, 0.13);
}

.project-tile-content {
    display: flex;
    flex: 1;
    flex-direction: column;
}

.project-tile-content h3 {
    margin: 0 0 var(--project-space-3);
    font-size: 1.85rem;
    line-height: 1.15;
    letter-spacing: -0.025em;
}

.project-tile-content > p:not(.project-type) {
    margin: 0;
    font-size: 0.96rem;
}

.project-text-link {
    width: fit-content;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    margin-top: auto;
    padding-top: var(--project-space-6);
    color: var(--project-text);
    font-size: 0.9rem;
    font-weight: 650;
    text-decoration: none;
    transition: color var(--project-duration) ease;
}

.project-text-link span {
    margin-left: var(--project-space-2);
    color: var(--project-accent);
}

.project-text-link:hover {
    color: var(--project-accent);
}

.project-tile-wide {
    min-height: 370px;
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(300px, 0.85fr) minmax(0, 1.15fr);
    gap: var(--project-space-10);
    align-items: stretch;
}

.project-tile-wide .project-tile-visual {
    min-height: 100%;
    margin: 0;
}

.project-contact-card {
    scroll-margin-top: 6rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--project-space-8);
    margin-top: var(--project-space-12);
    padding: var(--project-space-10) var(--project-space-12);
    border: 1px solid rgba(44, 62, 80, 0.04);
    border-radius: var(--project-card-radius);
    background: var(--project-card-bg);
    box-shadow: var(--project-shadow-card);
}

.project-contact-card h2 {
    margin: 0;
    font-size: clamp(1.7rem, 3vw, 2.35rem);
    line-height: 1.2;
}

.project-contact-card .project-button {
    flex: 0 0 auto;
    margin: 0;
}

@media (max-width: 900px) {
    .featured-project,
    .project-tile-wide {
        grid-template-columns: 1fr;
    }

    .project-preview {
        min-height: 320px;
    }

    .project-tile-wide .project-tile-visual {
        min-height: 220px;
        margin-bottom: 0;
    }
}

@media (max-width: 720px) {
    .project-page-section {
        padding: 9rem 1.25rem 4rem;
    }

    .project-page-header {
        margin-bottom: var(--project-space-8);
    }

    .project-page-header h1 {
        font-size: 2.2rem;
    }

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

    .project-tile-wide {
        grid-column: auto;
    }

    .featured-project,
    .project-tile,
    .project-tile-wide {
        padding: var(--project-space-6);
    }

    .project-contact-card {
        align-items: flex-start;
        flex-direction: column;
        padding: var(--project-space-8);
    }
}

@media (max-width: 480px) {
    .project-page-section {
        padding: 10.5rem 1rem 3rem;
    }

    .project-page-header h1 {
        font-size: 2rem;
    }

    .project-page-header p {
        font-size: 1rem;
    }

    .project-preview {
        min-height: 260px;
    }

    .project-preview svg {
        width: 84%;
    }

    .featured-project-content h2 {
        font-size: 2rem;
    }

    .project-tile {
        min-height: 500px;
    }

    .project-tile-visual {
        min-height: 190px;
    }

    .project-button {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    .featured-project,
    .project-tile,
    .project-button,
    .project-text-link {
        transition: none;
    }

    .featured-project:hover,
    .project-tile:hover {
        transform: none;
    }
}