/* ============================================
   PORTFOLIO — Design Tokens + Styles
   Emerald/teal accent, Space Grotesk headings
   ============================================ */

/* --- Design Tokens --- */
:root {
    /* Color — Dark Mode (default) */
    --color-bg: #09090b;
    --color-surface: #111113;
    --color-surface-hover: #18181b;
    --color-border: #27272a;
    --color-border-subtle: #1e1e21;
    --color-text: #fafafa;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #52525b;
    --color-primary: #10b981;
    --color-primary-hover: #059669;
    --color-primary-glow: rgba(16, 185, 129, 0.12);
    --color-primary-subtle: rgba(16, 185, 129, 0.08);
    --color-danger: #ef4444;
    --color-success: #22c55e;

    /* Spacing — 4px base */
    --sp-1: 4px;   --sp-2: 8px;    --sp-3: 12px;
    --sp-4: 16px;  --sp-5: 20px;   --sp-6: 24px;
    --sp-8: 32px;  --sp-10: 40px;  --sp-12: 48px;
    --sp-16: 64px; --sp-20: 80px;  --sp-24: 96px;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;

    /* Typography */
    --font-heading: 'Space Grotesk', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, monospace;

    /* Motion */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --duration-fast: 150ms;
    --duration-micro: 200ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 20px var(--color-primary-glow);

    /* Z-index scale */
    --z-base: 0;
    --z-sticky: 10;
    --z-dropdown: 20;
    --z-modal-backdrop: 30;
    --z-modal: 40;
    --z-toast: 50;
}

[data-theme="light"] {
    --color-bg: #fafafa;
    --color-surface: #ffffff;
    --color-surface-hover: #f4f4f5;
    --color-border: #e4e4e7;
    --color-border-subtle: #f0f0f2;
    --color-text: #09090b;
    --color-text-secondary: #52525b;
    --color-text-muted: #a1a1aa;
    --color-primary: #059669;
    --color-primary-hover: #047857;
    --color-primary-glow: rgba(5, 150, 105, 0.10);
    --color-primary-subtle: rgba(5, 150, 105, 0.06);
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.10);
    --shadow-glow: 0 0 20px var(--color-primary-glow);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 64px;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }

/* --- Utilities --- */
.container { max-width: 1080px; margin: 0 auto; padding: 0 var(--sp-6); }
.container-narrow { max-width: 720px; }
.section { padding: var(--sp-10) 0; }
.text-center { text-align: center; }
.text-accent { color: var(--color-primary); }

/* Skip link */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--sp-4);
    background: var(--color-primary);
    color: #fff;
    padding: var(--sp-2) var(--sp-4);
    border-radius: var(--radius-sm);
    z-index: var(--z-toast);
    font-size: 0.875rem;
    font-weight: 500;
}
.skip-link:focus { top: var(--sp-4); }

/* --- Animated Background --- */
.bg-orb {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}
.bg-orb::before,
.bg-orb::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
}
.bg-orb::before {
    width: 500px; height: 500px;
    background: var(--color-primary-glow);
    top: -150px; right: -100px;
    animation: orb-drift 25s ease-in-out infinite;
}
.bg-orb::after {
    width: 400px; height: 400px;
    background: rgba(168, 85, 247, 0.06);
    bottom: -100px; left: -80px;
    animation: orb-drift 30s ease-in-out infinite reverse;
}
@keyframes orb-drift {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-40px, 50px); }
}

/* --- Header --- */
.header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: var(--z-sticky);
    padding: var(--sp-4) 0;
    background: rgba(9, 9, 11, 0.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid transparent;
    transition: border-color var(--duration-normal) var(--ease-out),
                padding var(--duration-normal) var(--ease-out);
}
[data-theme="light"] .header { background: rgba(250, 250, 250, 0.7); }
.header.scrolled { border-bottom-color: var(--color-border-subtle); }
.header.scrolled { padding: var(--sp-3) 0; }

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}
.logo span { color: var(--color-primary); }

.nav { display: flex; align-items: center; gap: var(--sp-2); }
.nav-list { display: flex; gap: var(--sp-1); }
.nav-link {
    color: var(--color-text-secondary);
    padding: var(--sp-2) var(--sp-3);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color var(--duration-micro) var(--ease-out),
                background var(--duration-micro) var(--ease-out);
}
.nav-link:hover { color: var(--color-text); background: var(--color-surface-hover); }

.theme-toggle,
.mobile-menu-toggle {
    background: none;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    width: 36px; height: 36px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--duration-micro) var(--ease-out),
                border-color var(--duration-micro) var(--ease-out);
    font-size: 0.95rem;
}
.theme-toggle:hover,
.mobile-menu-toggle:hover { color: var(--color-text); border-color: var(--color-primary); }
.mobile-menu-toggle { display: none; }

/* --- Hero --- */
.hero {
    display: flex;
    align-items: center;
    position: relative;
    z-index: 1;
    padding: var(--sp-20) 0 var(--sp-16);
}
.hero-content { max-width: 640px; }
.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-primary);
    margin-bottom: var(--sp-6);
    opacity: 0;
    transform: translateY(12px);
    animation: fade-up 0.6s var(--ease-out) 0.1s forwards;
}
.hero-eyebrow::before {
    content: '';
    width: 24px;
    height: 1px;
    background: var(--color-primary);
}
.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5.5vw, 3.75rem);
    font-weight: 700;
    line-height: 1.08;
    letter-spacing: -0.03em;
    text-wrap: balance;
    margin-bottom: var(--sp-5);
    opacity: 0;
    transform: translateY(12px);
    animation: fade-up 0.6s var(--ease-out) 0.2s forwards;
}
.hero-role {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--sp-4);
    opacity: 0;
    transform: translateY(12px);
    animation: fade-up 0.6s var(--ease-out) 0.3s forwards;
}
.hero-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 520px;
    margin-bottom: var(--sp-8);
    opacity: 0;
    transform: translateY(12px);
    animation: fade-up 0.6s var(--ease-out) 0.4s forwards;
}
.hero-actions {
    display: flex;
    gap: var(--sp-3);
    flex-wrap: wrap;
    opacity: 0;
    transform: translateY(12px);
    animation: fade-up 0.6s var(--ease-out) 0.5s forwards;
}

@keyframes fade-up {
    to { opacity: 1; transform: translateY(0); }
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    padding: var(--sp-3) var(--sp-6);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-body);
    cursor: pointer;
    border: none;
    transition: all var(--duration-micro) var(--ease-out);
    line-height: 1.4;
}
.btn:active { transform: scale(0.97); }
.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover { background: var(--color-primary-hover); box-shadow: var(--shadow-glow); }
.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border);
}
.btn-outline:hover { border-color: var(--color-primary); color: var(--color-primary); }
.btn-sm { padding: var(--sp-2) var(--sp-4); font-size: 0.8125rem; }

/* --- Section Header --- */
.section-header {
    margin-bottom: var(--sp-6);
}
.section-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--sp-3);
}
.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    text-wrap: balance;
}

/* --- About --- */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--sp-6);
    align-items: start;
}
.about-text { color: var(--color-text-secondary); line-height: 1.75; }
.about-text strong { color: var(--color-text); font-weight: 600; }
.about-list {
    display: flex;
    flex-direction: column;
    gap: var(--sp-3);
    margin-top: var(--sp-6);
}
.about-list li {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-3);
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}
.about-list li::before {
    content: '';
    flex-shrink: 0;
    width: 6px; height: 6px;
    background: var(--color-primary);
    border-radius: 50%;
    margin-top: 8px;
}
.about-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-4);
}
.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
    transition: border-color var(--duration-micro) var(--ease-out);
}
.stat-card:hover { border-color: var(--color-primary); }
.stat-number {
    font-family: var(--font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: var(--sp-1);
}
.stat-label {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* --- Skills --- */
.skills-group {
    margin-bottom: var(--sp-4);
}
.skills-group:last-child { margin-bottom: 0; }
.skills-group-title {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--sp-4);
}
.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-2);
}
.skill-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    padding: var(--sp-2) var(--sp-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: all var(--duration-micro) var(--ease-out);
}
.skill-tag:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: var(--color-primary-subtle);
}
.skill-tag i { font-size: 0.875rem; }

/* --- Projects --- */
.projects-list {
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
}
.project-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
    transition: border-color var(--duration-micro) var(--ease-out),
                box-shadow var(--duration-normal) var(--ease-out);
}
.project-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
}
.project-card.featured {
    border-color: var(--color-border);
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-primary-subtle) 100%);
}
.project-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--sp-4);
    margin-bottom: var(--sp-3);
}
.project-title {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}
.project-links { display: flex; gap: var(--sp-2); flex-shrink: 0; }
.project-links .btn { font-size: 0.8125rem; padding: var(--sp-1) var(--sp-3); }
.project-description {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--sp-4);
    max-width: 65ch;
}
.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-2);
}
.project-tech span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: var(--sp-1) var(--sp-3);
    background: var(--color-primary-subtle);
    color: var(--color-primary);
    border-radius: 4px;
}

/* --- Blog --- */
.blog-featured {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-8);
    margin-bottom: var(--sp-8);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--duration-micro) var(--ease-out);
}
.blog-featured:hover { border-color: var(--color-primary); }
.blog-featured-image {
    width: 100%;
    height: 100%;
    min-height: 240px;
    object-fit: cover;
}
.blog-featured-info {
    padding: var(--sp-8);
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.blog-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--sp-6);
}
.blog-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
    transition: border-color var(--duration-micro) var(--ease-out);
    display: flex;
    flex-direction: column;
}
.blog-card:hover { border-color: var(--color-primary); }
.blog-date {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: var(--sp-3);
}
.blog-card h3 {
    font-family: var(--font-heading);
    font-size: 1.0625rem;
    font-weight: 600;
    margin-bottom: var(--sp-2);
    letter-spacing: -0.01em;
    text-wrap: balance;
}
.blog-card p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}
.blog-card .blog-date { order: -1; }

/* Blog article */
.blog-header { margin-bottom: var(--sp-8); }
.blog-header h1 {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 3.5vw, 2.25rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    text-wrap: balance;
    margin-top: var(--sp-3);
    line-height: 1.2;
}
.blog-featured-image-full {
    width: 100%;
    border-radius: var(--radius-md);
    margin-bottom: var(--sp-8);
}
.blog-content { color: var(--color-text-secondary); line-height: 1.8; }
.blog-content h2, .blog-content h3 { color: var(--color-text); margin: var(--sp-8) 0 var(--sp-4); }
.blog-content p { margin-bottom: var(--sp-4); max-width: 65ch; }
.blog-content ul { margin-bottom: var(--sp-4); padding-left: var(--sp-6); }
.blog-content li { margin-bottom: var(--sp-2); }
.blog-content code {
    font-family: var(--font-mono);
    background: var(--color-surface);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.875em;
    border: 1px solid var(--color-border);
}
.blog-content pre {
    background: #1a1b26;
    padding: var(--sp-6);
    border-radius: var(--radius-sm);
    overflow-x: auto;
    margin: var(--sp-6) 0;
    border: 1px solid var(--color-border);
}
.blog-content pre code { border: none; padding: 0; background: none; font-size: 0.8125rem; line-height: 1.7; }
.back-link {
    color: var(--color-primary);
    font-size: 0.875rem;
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    font-weight: 500;
    transition: opacity var(--duration-micro) var(--ease-out);
}
.back-link:hover { opacity: 0.8; }

/* --- Contact --- */
.contact-grid {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: var(--sp-6);
    align-items: start;
}
.contact-description {
    color: var(--color-text-secondary);
    margin-bottom: var(--sp-8);
    max-width: 48ch;
}
.contact-form { margin-bottom: var(--sp-4); }
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-4);
}
.form-group { margin-bottom: var(--sp-4); }
.form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--sp-2);
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--sp-3) var(--sp-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 0.9375rem;
    font-family: var(--font-body);
    outline: none;
    transition: border-color var(--duration-micro) var(--ease-out);
    resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--color-primary); }
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--color-text-muted); }
.error {
    color: var(--color-danger);
    font-size: 0.8125rem;
    margin-top: var(--sp-1);
    display: block;
}
.btn-loading {
    position: relative;
    pointer-events: none;
    opacity: 0.7;
}
.btn-loading::after {
    content: '';
    position: absolute;
    width: 16px; height: 16px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    right: 12px;
    top: 50%;
    margin-top: -8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
    margin-bottom: var(--sp-4);
}
.contact-method {
    display: flex;
    align-items: flex-start;
    gap: var(--sp-4);
}
.contact-icon {
    width: 36px; height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-subtle);
    color: var(--color-primary);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    flex-shrink: 0;
}
.contact-method h3 {
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 2px;
}
.contact-method p,
.contact-method a {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}
.contact-method a:hover { color: var(--color-primary); }

.social-links { display: flex; gap: var(--sp-2); }
.social-link {
    width: 40px; height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font-size: 1rem;
    transition: all var(--duration-micro) var(--ease-out);
}
.social-link:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background: var(--color-primary-subtle);
}

/* --- Alert --- */
.alert {
    padding: var(--sp-3) var(--sp-4);
    border-radius: var(--radius-sm);
    margin-bottom: var(--sp-6);
    font-size: 0.875rem;
}
.alert-success {
    background: rgba(34, 197, 94, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

/* --- Page Header --- */
.page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--sp-6);
    margin-bottom: var(--sp-10);
}
.page-title {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-top: var(--sp-2);
    line-height: 1.15;
}
.page-desc {
    color: var(--color-text-secondary);
    margin-top: var(--sp-3);
    max-width: 50ch;
    font-size: 0.9375rem;
}

/* --- Section Header Row --- */
.section-header-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--sp-4);
    margin-bottom: var(--sp-8);
}
.section-header-row .section-header { margin-bottom: 0; }

/* --- View Toggle --- */
.view-toggle {
    display: flex;
    gap: 2px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 2px;
    flex-shrink: 0;
}
.view-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    font-size: 0.8125rem;
    transition: all var(--duration-micro) var(--ease-out);
}
.view-btn:hover { color: var(--color-text-secondary); }
.view-btn.active {
    background: var(--color-primary);
    color: #fff;
}

/* --- Projects Page --- */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--sp-6);
}
.projects-list {
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
}
.projects-grid .project-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0;
    transition: border-color var(--duration-micro) var(--ease-out),
                transform var(--duration-micro) var(--ease-out);
}
.projects-grid .project-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}
.projects-grid .project-card-inner {
    padding: var(--sp-6);
    display: flex;
    flex-direction: column;
    height: 100%;
}
.project-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--sp-4);
}
.project-card-icon {
    color: var(--color-primary);
    font-size: 1.5rem;
    opacity: 0.8;
}
.project-card-links {
    display: flex;
    gap: var(--sp-3);
}
.project-link {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    transition: color var(--duration-micro) var(--ease-out);
}
.project-link:hover { color: var(--color-primary); }
.project-card-title {
    font-family: var(--font-heading);
    font-size: 1.0625rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: var(--sp-3);
}
.project-card-desc {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
    margin-bottom: var(--sp-4);
    flex: 1;
}
.project-card-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-2);
}
.project-card-tech span {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--color-primary);
    background: var(--color-primary-subtle);
    padding: var(--sp-1) var(--sp-2);
    border-radius: 3px;
    letter-spacing: 0.02em;
}
.projects-list .project-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--sp-6);
    transition: border-color var(--duration-micro) var(--ease-out);
}
.projects-list .project-card:hover { border-color: var(--color-primary); }

/* --- Empty State --- */
.empty-state {
    text-align: center;
    color: var(--color-text-muted);
    padding: var(--sp-16) 0;
    font-size: 0.9375rem;
}

/* --- Blog Upgrades --- */
.blog-meta {
    display: flex;
    align-items: center;
    gap: var(--sp-4);
}
.blog-read {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--color-text-muted);
}
.blog-read-more {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    color: var(--color-primary);
    font-size: 0.8125rem;
    font-weight: 500;
    margin-top: var(--sp-4);
    transition: gap var(--duration-micro) var(--ease-out);
}
.blog-card:hover .blog-read-more { gap: var(--sp-3); }
.blog-featured-info { gap: var(--sp-3); }
.blog-featured-info h3 {
    font-size: 1.25rem;
}

/* --- Page Section Fix (sub-pages) --- */
.page-section { padding-top: var(--sp-20); }

/* --- Project Detail Page --- */
.project-detail-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--sp-6);
    margin-top: var(--sp-8);
    margin-bottom: var(--sp-6);
}
.project-detail-title {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.15;
}
.project-detail-links { display: flex; gap: var(--sp-3); flex-shrink: 0; }
.project-detail-hero {
    width: 100%;
    border-radius: var(--radius-md);
    margin-bottom: var(--sp-6);
    border: 1px solid var(--color-border);
}
.project-detail-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--sp-2);
    margin-bottom: var(--sp-8);
}
.project-detail-tech span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-primary);
    background: var(--color-primary-subtle);
    padding: var(--sp-1) var(--sp-3);
    border-radius: 3px;
}
.project-detail-desc {
    color: var(--color-text-secondary);
    font-size: 1.0625rem;
    line-height: 1.7;
    margin-bottom: var(--sp-8);
}
.project-detail-content { margin-bottom: var(--sp-8); }
.project-detail-video { margin-bottom: var(--sp-8); }
.project-detail-video h3,
.project-detail-screenshots h3 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--sp-4);
}
.video-embed {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--color-border);
}
.video-embed iframe {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
}
.project-detail-screenshots { margin-bottom: var(--sp-8); }
.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--sp-4);
}
.screenshot-item {
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 1px solid var(--color-border);
    transition: border-color var(--duration-micro) var(--ease-out);
}
.screenshot-item:hover { border-color: var(--color-primary); }
.screenshot-item img {
    width: 100%;
    height: auto;
    display: block;
}

/* --- Modal --- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    align-items: center;
    justify-content: center;
    padding: var(--sp-6);
}
.modal-overlay.active { display: flex; }
.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    cursor: pointer;
}
.modal-container {
    position: relative;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    max-width: 720px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    padding: var(--sp-8);
    box-shadow: var(--shadow-lg);
}
.modal-close {
    position: absolute;
    top: var(--sp-4);
    right: var(--sp-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    width: 32px; height: 32px;
    border-radius: var(--radius-sm);
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    transition: all var(--duration-micro) var(--ease-out);
    line-height: 1;
}
.modal-close:hover { color: var(--color-text); border-color: var(--color-primary); }
.modal-project-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--sp-6);
    padding-right: var(--sp-10);
}
.modal-project-image {
    width: 100%;
    border-radius: var(--radius-md);
    margin-bottom: var(--sp-6);
    border: 1px solid var(--color-border);
}
.modal-project-content { margin-bottom: var(--sp-6); }
.modal-project-desc {
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--sp-6);
}
.modal-project-links {
    display: flex;
    gap: var(--sp-3);
    margin-top: var(--sp-6);
    padding-top: var(--sp-6);
    border-top: 1px solid var(--color-border);
}
.modal-project-screenshots { margin-bottom: var(--sp-6); }
.modal-project-screenshots h3,
.modal-project-video h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--sp-3);
}
.modal-project-video { margin-bottom: var(--sp-4); }

/* --- Blog Content Rich Styling --- */
.blog-content blockquote {
    border-left: 3px solid var(--color-primary);
    padding: var(--sp-4) var(--sp-6);
    margin: var(--sp-6) 0;
    background: var(--color-primary-subtle);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--color-text-secondary);
    font-style: italic;
}
.blog-content blockquote p { margin-bottom: 0; max-width: none; }
.blog-content img {
    max-width: 100%;
    border-radius: var(--radius-sm);
    margin: var(--sp-6) 0;
    border: 1px solid var(--color-border);
}
.blog-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.blog-content a:hover { opacity: 0.8; }
.blog-content strong { color: var(--color-text); }
.blog-content h2 { font-size: 1.375rem; }
.blog-content h3 { font-size: 1.125rem; }
.blog-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--sp-6) 0;
    font-size: 0.875rem;
}
.blog-content th, .blog-content td {
    padding: var(--sp-3) var(--sp-4);
    border: 1px solid var(--color-border);
    text-align: left;
}
.blog-content th {
    background: var(--color-surface);
    font-weight: 600;
    color: var(--color-text);
}
.blog-content hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--sp-8) 0;
}

/* --- Other Posts Section --- */
.other-posts {
    margin-top: var(--sp-12);
    padding-top: var(--sp-8);
    border-top: 1px solid var(--color-border);
}
.other-posts-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--sp-6);
}

/* --- Footer --- */
.footer {
    border-top: 1px solid var(--color-border-subtle);
    padding: var(--sp-8) 0;
    position: relative;
    z-index: 1;
}
.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.footer-copy {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}
.footer-links { display: flex; gap: var(--sp-4); }
.footer-links a {
    color: var(--color-text-muted);
    font-size: 0.8125rem;
    transition: color var(--duration-micro) var(--ease-out);
}
.footer-links a:hover { color: var(--color-primary); }

/* --- Pagination --- */
.pagination { margin-top: var(--sp-8); text-align: center; }
.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    padding: var(--sp-2) var(--sp-3);
    margin: 0 2px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    transition: all var(--duration-micro) var(--ease-out);
}
.pagination a:hover { border-color: var(--color-primary); color: var(--color-primary); }
.pagination .active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* --- Scroll Reveal (JS-driven) --- */
.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity var(--duration-slow) var(--ease-out),
                transform var(--duration-slow) var(--ease-out);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .nav-list { display: none; }
    .mobile-menu-toggle { display: flex; }
    .nav-list.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0; right: 0;
        background: var(--color-surface);
        border-bottom: 1px solid var(--color-border);
        padding: var(--sp-4);
        gap: var(--sp-1);
    }
    .nav-list.active .nav-link { padding: var(--sp-3) var(--sp-4); width: 100%; }

    .section { padding: var(--sp-6) 0; }
    .hero { padding: var(--sp-16) 0 var(--sp-12); }
    .hero-title { font-size: 2.25rem; }
    .about-grid { grid-template-columns: 1fr; gap: var(--sp-8); }
    .about-stats { grid-template-columns: 1fr 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: var(--sp-8); }
    .form-row { grid-template-columns: 1fr; }
    .blog-featured { grid-template-columns: 1fr; }
    .blog-featured-image { min-height: 200px; }
    .blog-grid { grid-template-columns: 1fr; }
    .page-header { flex-direction: column; gap: var(--sp-4); }
    .section-header-row { flex-direction: column; align-items: flex-start; gap: var(--sp-3); }
    .projects-grid { grid-template-columns: 1fr; }
    .project-detail-header { flex-direction: column; gap: var(--sp-3); }
    .screenshots-grid { grid-template-columns: 1fr; }
    .modal-container { padding: var(--sp-6); }
    .footer-inner { flex-direction: column; gap: var(--sp-4); text-align: center; }
}

@media (max-width: 480px) {
    .container { padding: 0 var(--sp-4); }
    .hero-actions { flex-direction: column; }
    .hero-actions .btn { width: 100%; justify-content: center; }
    .project-card { padding: var(--sp-6); }
    .blog-meta { flex-wrap: wrap; gap: var(--sp-2); }
}

/* --- Reduced Motion --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .hero-eyebrow, .hero-title, .hero-role, .hero-description, .hero-actions {
        opacity: 1;
        transform: none;
    }
    .reveal { opacity: 1; transform: none; }
    html { scroll-behavior: auto; }
}