/* ============================================================
   STYLES.CSS — Executive Calm + Technical Depth (v3)
   Rajan Gupta — AI Product Manager Portfolio
   ============================================================ */

/* ============================================================
   1. DESIGN TOKENS
   ============================================================ */
:root {
    /* Light theme — dominant */
    --bg-primary: #FAFAF7;
    --bg-secondary: #F1EFEA;
    --bg-card: #FFFFFF;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;
    --border: #E5E2DC;

    /* Dark technical blocks */
    --bg-dark: #1E293B;
    --bg-dark-alt: #0F172A;
    --text-on-dark: #F9FAFB;
    --text-muted-dark: #94A3B8;
    --code-text: #E2E8F0;
    --code-accent: #5EEAD4;
    --code-string: #FCD34D;
    --code-comment: #64748B;

    /* Accents */
    --accent: #0D5C5C;
    --accent-hover: #0A4747;
    --accent-light: #E8F0EF;
    --accent-border: #D0DFDD;

    /* Status */
    --status-active: #5B8C5A;
    --status-building: #D9A441;
    --status-archived: #6B7280;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(31, 41, 55, 0.06);
    --shadow-md: 0 2px 8px rgba(31, 41, 55, 0.08);
    --shadow-lg: 0 6px 20px rgba(31, 41, 55, 0.10);
    --shadow-nav: 0 2px 8px rgba(31, 41, 55, 0.05);

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;
    --space-4xl: 80px;
    --space-5xl: 120px;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 999px;

    /* Container */
    --max-width: 1200px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 17px;
    line-height: 1.65;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    letter-spacing: -0.03em;
}

h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
}

h3 {
    font-size: 1.375rem;
}

.eyebrow {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
    display: block;
}

.section-eyebrow {
    color: var(--accent);
}

/* ============================================================
4. NAVIGATION (FIXED — iOS Safari mobile menu rendering)
============================================================*/
.navbar {
    position: sticky;
    top: 0;
    background: rgba(250, 250, 247, 0.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    z-index: 1000;
    transition: box-shadow 0.25s ease, border-color 0.25s ease, background 0.25s ease;
}

.navbar.scrolled {
    box-shadow: var(--shadow-nav);
    border-bottom-color: var(--border);
    background: rgba(250, 250, 247, 0.96);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 18px;
    padding-bottom: 18px;
    position: relative;
    z-index: 1003;
    /* keep logo + hamburger above mobile menu */
}

/* Brand / Logo */
.logo {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--text-primary);
    letter-spacing: -0.015em;
    line-height: 1;
    transition: color 0.2s ease;
    display: inline-flex;
    align-items: baseline;
}

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

.logo-dot {
    color: var(--accent);
    margin-left: 1px;
    font-weight: 700;
}

/* Nav Links — Desktop */
.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-xl);
    align-items: center;
}

.nav-links a {
    position: relative;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9375rem;
    letter-spacing: 0.005em;
    padding: 6px 2px;
    transition: color 0.2s ease;
}

.nav-links a::after {
    content: '';
    position: absolute;
    left: 2px;
    right: 2px;
    bottom: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.25s ease;
}

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

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
    transform: scaleX(1);
}

/* Hamburger Button */
.hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    padding: 10px;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    transition: background 0.2s ease;
    position: relative;
    z-index: 1005;
    /* always on top */
}

.hamburger:hover {
    background: var(--accent-light);
}

.hamburger:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: transform 0.3s ease, opacity 0.2s ease, background 0.2s ease;
    transform-origin: center;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
    background: var(--accent);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
    background: var(--accent);
}

/* Backdrop — sits between page content and menu */
.nav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.35);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 1001;
}

body.nav-open {
    overflow: hidden;
}

/* ============================================================
   Mobile Navigation
   ============================================================ */
@media (max-width: 768px) {
    .navbar .container {
        padding-top: 14px;
        padding-bottom: 14px;
    }

    .hamburger {
        display: flex;
    }

    .nav-backdrop {
        display: block;
    }

    .nav-backdrop.active {
        opacity: 1;
        pointer-events: auto;
    }

    /* Mobile menu panel */
    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        width: 100%;
        background: var(--bg-primary);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 80px var(--space-lg) var(--space-xl);
        margin: 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
            opacity 0.25s ease,
            visibility 0s linear 0.35s;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-lg);
        z-index: 1002;
        max-height: 100dvh;
        /* dynamic viewport height for iOS */
        max-height: 100vh;
        /* fallback */
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
            opacity 0.25s ease,
            visibility 0s linear 0s;
    }

    .nav-links li {
        border-bottom: 1px solid var(--border);
        list-style: none;
    }

    .nav-links li:last-child {
        border-bottom: none;
    }

    .nav-links a {
        display: block;
        font-size: 1.0625rem;
        font-weight: 500;
        padding: 18px 4px;
        color: var(--text-primary);
        width: 100%;
    }

    .nav-links a::after {
        display: none;
    }

    .nav-links a:hover,
    .nav-links a:focus-visible {
        color: var(--accent);
    }
}

/* Tiny phones */
@media (max-width: 380px) {
    .logo {
        font-size: 1.0625rem;
    }
}

/* ============================================================
   5. SECTION DEFAULTS
   ============================================================ */
section {
    padding: var(--space-5xl) 0;
}

@media (max-width: 768px) {
    section {
        padding: var(--space-4xl) 0;
    }
}

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

.section-header {
    max-width: 720px;
    margin: 0 auto var(--space-2xl);
    text-align: center;
}

.section-header.left-align {
    text-align: left;
    margin-left: 0;
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    line-height: 1.6;
}

/* ============================================================
   6. HERO SECTION (Option 1 — No name in hero)
   ============================================================ */
.hero {
    padding: var(--space-4xl) 0 var(--space-5xl);
    background: var(--bg-primary);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: var(--space-4xl);
    align-items: center;
}

@media (max-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}

.hero-left {
    max-width: 600px;
}

.hero-tagline {
    font-size: clamp(2rem, 4.5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
}

.hero-subtitle {
    font-size: 1.25rem;
    line-height: 1.5;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    font-weight: 500;
}

.hero-body {
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.hero-specialty-chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
}

.specialty-chip {
    background: var(--accent-light);
    color: var(--accent);
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    font-size: 0.8125rem;
    font-weight: 500;
    border: 1px solid var(--accent-border);
}

.hero-ctas {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* Hero Right — Profile Card */
.hero-right {
    display: flex;
    justify-content: center;
}

.profile-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    max-width: 380px;
    width: 100%;
    text-align: center;
    border: 1px solid var(--border);
}

.profile-photo {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto var(--space-md);
    border: 4px solid var(--bg-primary);
    box-shadow: var(--shadow-lg);
}

.profile-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.profile-role {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.profile-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
    margin-bottom: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border);
}

.profile-chip {
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: var(--bg-primary);
    padding: 4px 10px;
    border-radius: var(--radius-pill);
}

.profile-metrics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-sm);
    padding-top: var(--space-md);
    border-top: 1px solid var(--border);
}

.profile-metric {
    text-align: center;
}

.profile-metric-value {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-primary);
    display: block;
    line-height: 1.2;
}

.profile-metric-label {
    font-size: 0.6875rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 2px;
}

/* ============================================================
   7. BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 14px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.9375rem;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 2px solid transparent;
    text-decoration: none;
    font-family: inherit;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: var(--bg-primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--accent);
    border-color: var(--accent);
}

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

.btn-sm {
    padding: 8px 16px;
    font-size: 0.8125rem;
}

/* ============================================================
   8. ABOUT SECTION
   ============================================================ */
.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--space-4xl);
    max-width: 1100px;
    margin: 0 auto;
}

@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}

.about-left .eyebrow {
    color: var(--accent);
}

.about-headline {
    font-size: 1.75rem;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.about-paragraphs p {
    margin-bottom: var(--space-md);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 1rem;
}

.about-paragraphs p:last-child {
    margin-bottom: 0;
}

.about-paragraphs strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ============================================================
   9. CAPABILITIES SECTION
   ============================================================ */
.capabilities {
    background: var(--bg-primary);
    padding-top: var(--space-3xl);
}

.capabilities-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

@media (max-width: 1024px) {
    .capabilities-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .capabilities-grid {
        grid-template-columns: 1fr;
    }
}

.capability-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: all 0.2s ease;
}

.capability-card:hover {
    border-color: var(--accent-border);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.capability-icon {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

.capability-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.capability-description {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ============================================================
   10. SELECTED WORK — Asymmetric Grid
   ============================================================ */
.projects {
    background: var(--bg-primary);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--space-lg);
}

/* Ladder AI — Featured (7/12 cols) */
.project-card.featured {
    grid-column: span 7;
}

/* Other projects — 5/12 cols on row 1, then 4/12 on row 2-3 */
.project-card:nth-child(2) {
    grid-column: span 5;
}

.project-card:nth-child(3),
.project-card:nth-child(4),
.project-card:nth-child(5) {
    grid-column: span 4;
}

.project-card:nth-child(6) {
    grid-column: span 6;
}

.project-card:nth-child(7) {
    grid-column: span 6;
}

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

    .project-card,
    .project-card.featured,
    .project-card:nth-child(2),
    .project-card:nth-child(3),
    .project-card:nth-child(4),
    .project-card:nth-child(5),
    .project-card:nth-child(6),
    .project-card:nth-child(7) {
        grid-column: span 1;
    }

    .project-card.featured {
        grid-column: span 2;
    }
}

@media (max-width: 640px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .project-card,
    .project-card.featured {
        grid-column: span 1;
    }
}

.project-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    color: var(--text-primary);
    border: 1px solid var(--border);
    position: relative;
    text-decoration: none;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    color: var(--text-primary);
    border-color: var(--accent-border);
}

.project-card.featured {
    border: 2px solid var(--accent);
}

.featured-flag {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: var(--accent);
    color: var(--bg-primary);
    padding: 5px 12px;
    border-radius: var(--radius-pill);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    z-index: 2;
}

.project-thumbnail {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--bg-secondary);
}

.project-card.featured .project-thumbnail {
    aspect-ratio: 16/8;
}

.project-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.project-card:hover .project-thumbnail img {
    transform: scale(1.03);
}

/* Ladder AI gradient placeholder */
.project-emoji-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    color: white;
}

.ladder-ai-gradient {
    background: linear-gradient(135deg, #0D5C5C 0%, #16847B 50%, #1FA89B 100%);
}

.placeholder-emoji {
    font-size: 4rem;
    line-height: 1;
}

.placeholder-label {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

.project-content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-category {
    font-size: 0.6875rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.project-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
    line-height: 1.3;
}

.project-card.featured .project-title {
    font-size: 1.5rem;
}

.project-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--space-md);
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: var(--space-md);
}

.project-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 500;
}

.project-metric {
    font-size: 0.875rem;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--accent-light);
    border-left: 3px solid var(--accent);
    border-radius: 0 4px 4px 0;
}

.project-metric strong {
    color: var(--accent);
    font-weight: 600;
}

.project-cta {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9375rem;
    margin-top: auto;
}

/* ============================================================
   11. TOOLS SECTION (with dark technical card)
   ============================================================ */
.tools {
    background: var(--bg-secondary);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    max-width: 1000px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .tools-grid {
        grid-template-columns: 1fr;
    }
}

.tool-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s ease;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
}

.tool-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Dark technical card */
.tool-card.dark {
    background: var(--bg-dark);
    color: var(--text-on-dark);
    border-color: rgba(255, 255, 255, 0.08);
}

.tool-card.dark .tool-name {
    color: var(--text-on-dark);
}

.tool-card.dark .tool-description {
    color: var(--text-muted-dark);
}

.tool-card.dark .tool-tag {
    background: rgba(94, 234, 212, 0.1);
    color: var(--code-accent);
    border: 1px solid rgba(94, 234, 212, 0.2);
}

.tool-card.dark .status-label {
    color: var(--text-muted-dark);
}

.tool-card.dark .tool-internal-note {
    color: var(--text-muted-dark);
}

.tool-icon {
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
}

.tool-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.tool-description {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--space-md);
    flex-grow: 1;
}

.tool-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: var(--space-md);
}

.tool-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 500;
}

.tool-status {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.status-dot.building {
    animation: pulse-amber 2s ease-in-out infinite;
}

@keyframes pulse-amber {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(217, 164, 65, 0.4);
    }

    50% {
        box-shadow: 0 0 0 6px rgba(217, 164, 65, 0);
    }
}

.tool-actions {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-top: auto;
}

.tool-internal-note {
    color: var(--text-light);
    font-size: 0.8125rem;
    font-style: italic;
    margin-top: auto;
}

/* Code preview in dark tool card */
.tool-code-preview {
    background: var(--bg-dark-alt);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    margin-top: var(--space-md);
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 0.75rem;
    line-height: 1.6;
    color: var(--code-comment);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow-x: auto;
}

/* ============================================================
   12. EXPERIENCE TIMELINE
   ============================================================ */
.experience {
    background: var(--bg-primary);
}

.experience-timeline {
    max-width: 880px;
    margin: 0 auto;
    position: relative;
}

.experience-timeline::before {
    content: '';
    position: absolute;
    left: 16px;
    top: 8px;
    bottom: 8px;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    padding-left: 56px;
    padding-bottom: var(--space-2xl);
}

.timeline-item:last-child {
    padding-bottom: 0;
}

.timeline-marker {
    position: absolute;
    left: 8px;
    top: 8px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 3px solid var(--accent);
    z-index: 1;
}

.timeline-item.current .timeline-marker {
    background: var(--accent);
}

.current-pulse {
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    border-radius: 50%;
    background: var(--accent);
    opacity: 0.3;
    animation: pulse 2s ease-out infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.4;
    }

    100% {
        transform: scale(1.8);
        opacity: 0;
    }
}

.timeline-content {
    background: var(--bg-card);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.timeline-item.current .timeline-content {
    border-color: var(--accent-border);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-xs);
}

.timeline-title {
    font-size: 1.125rem;
    margin: 0;
}

.timeline-date {
    color: var(--text-secondary);
    font-size: 0.8125rem;
    font-weight: 500;
    white-space: nowrap;
}

.current-badge {
    background: var(--accent);
    color: var(--bg-primary);
    padding: 2px 8px;
    border-radius: var(--radius-pill);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-right: var(--space-sm);
}

.timeline-company {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: var(--space-md);
}

.timeline-company strong {
    color: var(--text-primary);
}

.timeline-achievements {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--space-md) 0;
}

.timeline-achievements li {
    position: relative;
    padding-left: var(--space-md);
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.timeline-achievements li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 600;
}

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

.timeline-tag {
    background: var(--accent-light);
    color: var(--accent);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
    font-size: 0.75rem;
    font-weight: 500;
}

/* ============================================================
   13. CONTACT SECTION
   ============================================================ */
.contact {
    background: var(--bg-primary);
    padding: var(--space-5xl) 0;
}

.contact-inner {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}

.contact-headline {
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: var(--space-md);
    color: var(--text-primary);
}

.contact-intro {
    font-size: 1.0625rem;
    line-height: 1.65;
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto var(--space-2xl);
}

/* Three icon+label links in a row */
.contact-links {
    display: inline-flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: var(--space-2xl);
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: var(--bg-card);
    border: 1.5px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9375rem;
    text-decoration: none;
    transition: all 0.2s ease;
    box-shadow: var(--shadow-sm);
}

.contact-link:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.contact-link-icon {
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.contact-link:hover .contact-link-icon {
    transform: scale(1.1);
}

/* Status / meta pill */
.contact-meta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    flex-wrap: wrap;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

@media (max-width: 640px) {
    .contact-meta {
        flex-direction: column;
        gap: var(--space-sm);
        padding: var(--space-md) var(--space-lg);
        border-radius: var(--radius-lg);
    }

    .contact-meta-divider {
        display: none;
    }
}

.contact-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    color: var(--text-primary);
    font-weight: 500;
}

.contact-meta-divider {
    width: 1px;
    height: 16px;
    background: var(--border);
}

/* Animated status dot */
.status-dot-pulse {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--status-active);
    position: relative;
    flex-shrink: 0;
}

.status-dot-pulse::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 50%;
    background: var(--status-active);
    opacity: 0.4;
    animation: status-pulse 2s ease-out infinite;
}

@keyframes status-pulse {
    0% {
        transform: scale(1);
        opacity: 0.4;
    }

    100% {
        transform: scale(2);
        opacity: 0;
    }
}

/* ============================================================
   14. FOOTER (Minimal)
   ============================================================ */
.footer {
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--border);
    background: var(--bg-primary);
    text-align: center;
}

.footer-text {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

/* ============================================================
   15. UTILITY
   ============================================================ */
.text-center {
    text-align: center;
}

.hidden {
    display: none;
}

.loading {
    opacity: 0.5;
    pointer-events: none;
}

/* Skip nav for accessibility */
.skip-nav {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--accent);
    color: var(--bg-primary);
    padding: 8px 16px;
    z-index: 9999;
    border-radius: 0 0 4px 0;
}

.skip-nav:focus {
    top: 0;
}

/* ============================================================
   MOBILE NAV FIX — Z-index hardening + escape stacking context
   ============================================================ */
@media (max-width: 768px) {

    /* Remove backdrop-filter on mobile so menu z-index works globally */
    .navbar {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        background: rgba(250, 250, 247, 0.98) !important;
    }

    .navbar .container {
        z-index: auto !important;
    }

    /* Stacking order: hamburger > menu > backdrop */
    .hamburger {
        z-index: 10000 !important;
    }

    .nav-links {
        z-index: 9999 !important;
    }

    .nav-backdrop {
        z-index: 9998 !important;
    }
}