/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    --color-bg:           #080A0C;
    --color-surface:      #0D1117;
    --color-surface-alt:  #111820;
    --color-border:       rgba(255, 255, 255, 0.06);
    --color-border-hover: rgba(255, 255, 255, 0.12);
    --color-text-primary: #E8E6E0;
    --color-text-muted:   rgba(232, 230, 224, 0.5);
    --color-text-faint:   rgba(232, 230, 224, 0.25);
    --color-accent:       #C8A96E;
    --color-accent-dim:   rgba(200, 169, 110, 0.2);
    --color-accent-glow:  rgba(200, 169, 110, 0.06);
    --transition:         0.2s ease;
}

[data-theme="light"] {
    --color-bg:           #F5F3EE;
    --color-surface:      #FFFFFF;
    --color-surface-alt:  #EFECE6;
    --color-border:       rgba(0, 0, 0, 0.08);
    --color-border-hover: rgba(0, 0, 0, 0.16);
    --color-text-primary: #0F0D0A;
    --color-text-muted:   rgba(15, 13, 10, 0.55);
    --color-text-faint:   rgba(15, 13, 10, 0.3);
    --color-accent:       #9A7A42;
    --color-accent-dim:   rgba(154, 122, 66, 0.12);
    --color-accent-glow:  rgba(154, 122, 66, 0.06);
}

/* ============================================
   RESET & BASE
   ============================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    background: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    transition: background var(--transition), color var(--transition);
}

a {
    color: var(--color-accent);
    text-decoration: none;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(8, 10, 12, 0.95);
    border-bottom: 1px solid var(--color-border);
    padding: 0 2.5rem;
    height: 58px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    transition: background var(--transition);
}

[data-theme="light"] .nav {
    background: rgba(245, 243, 238, 0.95);
}

.nav-logo {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 22px;
    letter-spacing: 0.1em;
    color: var(--color-text-primary);
    transition: color var(--transition);
}

.nav-logo span {
    color: var(--color-accent);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    list-style: none;
}

.nav-links a {
    font-size: 10px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-text-faint);
    transition: color var(--transition);
    cursor: pointer;
}

.nav-links a:hover {
    color: var(--color-text-muted);
}

.nav-links a.active {
    color: var(--color-accent);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 14px;
}

.nav-icons {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav-icons a {
    color: var(--color-text-faint);
    display: flex;
    align-items: center;
    transition: color var(--transition);
}

.nav-icons a:hover {
    color: var(--color-accent);
}

.nav-divider {
    width: 1px;
    height: 18px;
    background: var(--color-border);
}

/* ============================================
   THEME TOGGLE
   ============================================ */
.theme-toggle {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-faint);
    border: 1px solid var(--color-border);
    padding: 5px 12px;
    border-radius: 2px;
    cursor: pointer;
    background: transparent;
    transition: color var(--transition), border-color var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.theme-toggle:hover {
    color: var(--color-accent);
    border-color: var(--color-accent-dim);
}

.toggle-track {
    width: 28px;
    height: 16px;
    border-radius: 8px;
    background: var(--color-accent);
    position: relative;
    transition: background var(--transition);
}

.toggle-thumb {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-bg);
    position: absolute;
    top: 3px;
    left: 3px;
    transition: left var(--transition);
}

[data-theme="light"] .toggle-thumb {
    left: 15px;
}

.toggle-label {
    font-size: 10px;
    min-width: 28px;
}

/* ============================================
   HERO
   ============================================ */
.hero {
    position: relative;
    min-height: 380px;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    overflow: hidden;
    display: flex;
    align-items: flex-end;
    padding: 3.5rem 2.5rem;
    transition: background var(--transition);
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(var(--color-accent-glow) 1px, transparent 1px),
        linear-gradient(90deg, var(--color-accent-glow) 1px, transparent 1px);
    background-size: 40px 40px;
    animation: gridDrift 24s linear infinite;
}

@keyframes gridDrift {
    0%   { transform: translateY(0); }
    100% { transform: translateY(40px); }
}

.hero-scan {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        transparent 0%,
        rgba(200, 169, 110, 0.025) 50%,
        transparent 100%
    );
    animation: scan 5s ease-in-out infinite;
}

@keyframes scan {
    0%, 100% { transform: translateY(-100%); }
    50%       { transform: translateY(100%); }
}

.hero-vignette {
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse at 30% 50%,
        transparent 30%,
        rgba(8, 10, 12, 0.75) 100%
    );
}

[data-theme="light"] .hero-vignette {
    background: radial-gradient(
        ellipse at 30% 50%,
        transparent 30%,
        rgba(245, 243, 238, 0.75) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 680px;
}

.hero-eyebrow {
    font-size: 10px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.hero-eyebrow::before {
    content: '';
    display: block;
    width: 24px;
    height: 1px;
    background: var(--color-accent);
    flex-shrink: 0;
}

.hero-name {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(40px, 6vw, 64px);
    line-height: 0.92;
    letter-spacing: 0.04em;
    color: var(--color-text-primary);
    margin-bottom: 1.5rem;
    transition: color var(--transition);
}

.hero-name span {
    color: var(--color-accent);
}

.hero-bio {
    font-size: 12px;
    line-height: 1.9;
    color: var(--color-text-muted);
    max-width: 480px;
    border-left: 1px solid var(--color-accent-dim);
    padding-left: 1rem;
}

.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 1.75rem;
}

.tag {
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 4px 10px;
    border: 1px solid var(--color-accent-dim);
    color: rgba(200, 169, 110, 0.65);
    border-radius: 2px;
    transition: border-color var(--transition), color var(--transition);
}

.tag:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.hero-ghost {
    position: absolute;
    right: 2.5rem;
    bottom: 2rem;
    font-family: 'Bebas Neue', sans-serif;
    font-size: 120px;
    color: rgba(200, 169, 110, 0.04);
    line-height: 1;
    letter-spacing: 0.05em;
    user-select: none;
    pointer-events: none;
    z-index: 0;
}

/* ============================================
   MAIN LAYOUT
   ============================================ */
.main {
    padding: 2.5rem;
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

/* ============================================
   SECTION EYEBROW
   ============================================ */
.section-eyebrow {
    font-size: 10px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1.25rem;
}

.section-eyebrow::before {
    content: '';
    display: block;
    width: 16px;
    height: 1px;
    background: var(--color-accent);
    flex-shrink: 0;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.25rem;
}

.section-header .section-eyebrow {
    margin-bottom: 0;
}

.view-all {
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-faint);
    transition: color var(--transition);
}

.view-all:hover {
    color: var(--color-accent);
}

/* ============================================
   GITHUB CARD
   ============================================ */
.github-card {
    border: 1px solid var(--color-border);
    border-radius: 3px;
    padding: 1.5rem;
    background: var(--color-surface);
    transition: background var(--transition), border-color var(--transition);
}

.stat-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.stat {
    padding: 1rem;
    background: var(--color-bg);
    text-align: center;
    transition: background var(--transition);
}

.stat-number {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 34px;
    color: var(--color-text-primary);
    letter-spacing: 0.05em;
    line-height: 1;
    transition: color var(--transition);
}

.stat-label {
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-faint);
    margin-top: 4px;
}

.contrib-grid {
    display: grid;
    grid-template-columns: repeat(26, 1fr);
    gap: 2px;
    margin-bottom: 1.5rem;
}

.contrib-cell {
    aspect-ratio: 1;
    border-radius: 1px;
    background: var(--color-surface-alt);
}

.contrib-cell.l1 { background: rgba(200, 169, 110, 0.2); }
.contrib-cell.l2 { background: rgba(200, 169, 110, 0.4); }
.contrib-cell.l3 { background: rgba(200, 169, 110, 0.65); }
.contrib-cell.l4 { background: #C8A96E; }

[data-theme="light"] .contrib-cell.l1 { background: rgba(154, 122, 66, 0.15); }
[data-theme="light"] .contrib-cell.l2 { background: rgba(154, 122, 66, 0.35); }
[data-theme="light"] .contrib-cell.l3 { background: rgba(154, 122, 66, 0.6); }
[data-theme="light"] .contrib-cell.l4 { background: #9A7A42; }

.repo-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
}

.repo-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.repo-name {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 0.04em;
}

.repo-name a {
    color: var(--color-accent);
}

.repo-desc {
    font-size: 11px;
    color: var(--color-text-faint);
    margin-top: 3px;
}

.repo-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    color: var(--color-text-faint);
    flex-shrink: 0;
}

.repo-lang-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    display: inline-block;
}

/* ============================================
   WRITING CARDS
   ============================================ */
.writing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    overflow: hidden;
}

.writing-card {
    background: var(--color-bg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    transition: background var(--transition);
    cursor: pointer;
}

.writing-card:hover {
    background: var(--color-surface);
}

.writing-ghost-num {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 52px;
    color: var(--color-accent-dim);
    line-height: 1;
    margin-bottom: 0.5rem;
    transition: color var(--transition);
}

.writing-card:hover .writing-ghost-num {
    color: rgba(200, 169, 110, 0.4);
}

.writing-cat {
    font-size: 10px;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

.writing-title {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-primary);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 1rem;
    transition: color var(--transition);
}

.writing-excerpt {
    font-size: 11px;
    color: var(--color-text-faint);
    line-height: 1.6;
    margin-bottom: 1rem;
    flex: 1;
}

.writing-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 0.75rem;
    border-top: 1px solid var(--color-border);
    font-size: 10px;
}

.writing-date {
    color: var(--color-text-faint);
    letter-spacing: 0.06em;
}

.writing-read {
    color: var(--color-accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* ============================================
   TWO COLUMN
   ============================================ */
.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: var(--color-border);
    border: 1px solid var(--color-border);
    border-radius: 3px;
    overflow: hidden;
}

.col-card {
    background: var(--color-bg);
    padding: 1.5rem;
    transition: background var(--transition);
}

.col-card p {
    font-size: 12px;
    line-height: 1.9;
    color: var(--color-text-muted);
    margin-bottom: 0;
}

/* ============================================
   SKILLS
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    margin-top: 1.25rem;
}

.skill-item {
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    padding: 6px 8px;
    border: 1px solid var(--color-border);
    color: var(--color-text-faint);
    border-radius: 2px;
    transition: border-color var(--transition), color var(--transition);
}

.skill-item:hover {
    border-color: var(--color-accent-dim);
    color: var(--color-text-muted);
}

/* ============================================
   CONTACT FORM
   ============================================ */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-faint);
    margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-border);
    padding: 8px 0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--color-text-primary);
    outline: none;
    transition: border-color var(--transition), color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    border-bottom-color: var(--color-accent);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-faint);
}

.form-group textarea {
    border: 1px solid var(--color-border);
    padding: 8px;
    border-radius: 2px;
    resize: vertical;
    height: 90px;
    margin-top: 4px;
}

.form-group textarea:focus {
    border-color: var(--color-accent);
}

.btn {
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    background: transparent;
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    padding: 9px 22px;
    cursor: pointer;
    border-radius: 2px;
    transition: background var(--transition), color var(--transition);
    margin-top: 0.5rem;
}

.btn:hover {
    background: var(--color-accent);
    color: var(--color-bg);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 1.5rem 2.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: border-color var(--transition);
}

.footer-text {
    font-size: 10px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-faint);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .nav-links { display: none; }

    .hero {
        padding: 2.5rem 1.5rem;
        min-height: 300px;
    }

    .hero-name { font-size: 52px; }
    .hero-ghost { display: none; }

    .main { padding: 1.5rem; gap: 2rem; }

    .writing-grid { grid-template-columns: 1fr; }
    .two-col      { grid-template-columns: 1fr; }

    .stat-row {
        grid-template-columns: repeat(2, 1fr);
    }

    .contrib-grid {
        grid-template-columns: repeat(13, 1fr);
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}