/* ==========================================================================
   THE ANALYTICAL EDITORIAL — Design System
   Creative North Star: "The Digital Curator"
   ========================================================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700;800&family=Newsreader:ital,opsz,wght@0,6..72,300;0,6..72,400;0,6..72,500;0,6..72,600;1,6..72,300;1,6..72,400&family=Inter:wght@300;400;500;600;700&display=swap');

/* --- Design Tokens --- */
:root {
    /* Surface Architecture */
    --background: #fcf8f9;
    --surface: #fcf8f9;
    --surface-bright: #fcf8f9;
    --surface-dim: #ddd9d9;
    --surface-container: #f1eded;
    --surface-container-high: #ebe7e8;
    --surface-container-highest: #e5e2e2;
    --surface-container-low: #f6f3f3;
    --surface-container-lowest: #ffffff;
    --surface-variant: #e5e2e2;
    --surface-tint: #5c5e66;

    /* Primary Palette */
    --primary: #07080f;
    --primary-container: #1e2027;
    --primary-fixed: #e2e2eb;
    --on-primary: #ffffff;
    --on-primary-container: #868790;

    /* Secondary Palette */
    --secondary: #5e5e62;
    --secondary-container: #e1dfe3;
    --secondary-fixed: #e4e2e6;
    --secondary-fixed-dim: #c7c6ca;
    --on-secondary: #ffffff;
    --on-secondary-container: #626266;

    /* Tertiary Palette */
    --tertiary: #0d0702;
    --tertiary-container: #261f15;
    --tertiary-fixed: #eee0d0;
    --tertiary-fixed-dim: #d2c4b5;
    --on-tertiary: #ffffff;
    --on-tertiary-container: #918678;

    /* Neutral / Text */
    --on-background: #1c1b1c;
    --on-surface: #1c1b1c;
    --on-surface-variant: #46464b;
    --outline: #77777c;
    --outline-variant: #c7c6cb;

    /* Inverse */
    --inverse-surface: #313031;
    --inverse-on-surface: #f4f0f0;

    /* Typography */
    --font-headline: 'Manrope', sans-serif;
    --font-body: 'Newsreader', serif;
    --font-label: 'Inter', sans-serif;

    /* Radius — matches Stitch tailwind config */
    --radius-sm: 0.125rem;
    --radius-md: 0.25rem;
    --radius-lg: 0.5rem;
    --radius-full: 0.75rem;
    --radius-pill: 9999px;

    /* Shadows — always tinted with slate, never pure black */
    --shadow-sm: 0 4px 12px rgba(28, 27, 28, 0.04);
    --shadow-md: 0 8px 24px rgba(28, 27, 28, 0.05);
    --shadow-lg: 0 20px 40px rgba(28, 27, 28, 0.06);
    --shadow-xl: 0 25px 50px rgba(28, 27, 28, 0.08);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--background);
    color: var(--on-surface);
    font-family: var(--font-body);
    font-size: 1.125rem;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-base);
}

/* --- Navigation --- */
nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(248, 250, 252, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: center;
    height: 5rem;
    /* h-20 from Stitch */
    padding: 0 1.5rem;
}

.nav-inner {
    width: 100%;
    max-width: 80rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 400;
    font-size: 1rem;
    letter-spacing: normal;
    color: var(--on-surface-variant);
    display: flex;
    flex-direction: column;
    line-height: 1.4;
}

.brand-author {
    font-family: var(--font-label);
    font-style: normal;
    font-weight: 500;
    font-size: 0.75rem;
    text-align: right;
    align-self: flex-end;
    color: var(--on-surface-variant);
    margin-top: 0.125rem;
}

.nav-links {
    display: none;
}

@media(min-width: 768px) {
    .nav-links {
        display: flex;
        gap: 2rem;
    }
}

.nav-links a {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.125rem;
    letter-spacing: -0.025em;
    color: rgba(100, 116, 139, 1);
    /* slate-500 */
    transition: color var(--transition-base);
}

.nav-links a:hover {
    color: rgba(51, 65, 85, 1);
    /* slate-700 */
}

.nav-links a.active {
    color: var(--primary);
    border-bottom: 2px solid rgba(20, 184, 166, 1);
    /* teal-500 */
    padding-bottom: 0.25rem;
}

/* --- Layout --- */
main {
    max-width: 56rem;
    /* 896px */
    margin: 0 auto;
    padding: 8rem 1.5rem 5rem;
}

section {
    margin-bottom: 8rem;
}

/* --- Header / Hero --- */
.hero-header {
    margin-bottom: 3rem;
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 2.5rem;
}

@media(min-width: 768px) {
    .hero-header {
        margin-left: 4rem;
    }
}

@media (max-width: 767px) {
    .hero-header {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
}

.hero-photo-wrapper {
    position: relative;
    display: inline-block;
    flex-shrink: 0;
}

.hero-text {
    display: flex;
    flex-direction: column;
}

/* Ambient glow behind photo */
.hero-photo-wrapper::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    background: linear-gradient(to top right, var(--secondary-container), var(--tertiary-fixed-dim));
    opacity: 0.4;
    filter: blur(20px);
    border-radius: var(--radius-pill);
}

.hero-photo {
    width: 14rem;
    height: 14rem;
    border-radius: var(--radius-pill);
    object-fit: cover;
    position: relative;
    z-index: 2;
    border: 4px solid var(--surface-container-lowest);
    box-shadow: var(--shadow-xl);
}

.hero-name {
    font-family: var(--font-headline);
    font-weight: 800;
    font-size: 0.5rem;
    letter-spacing: -0.05em;
    color: var(--primary);
    margin-bottom: 0.75rem;
    line-height: 1;
}

@media(min-width: 768px) {
    .hero-name {
        font-size: 2.0rem;
    }
}

.hero-title {
    font-family: var(--font-body);
    font-style: italic;
    font-size: 1rem;
    color: var(--on-surface-variant);
    max-width: 42rem;
}

@media(min-width: 768px) {
    .hero-title {
        font-size: 1.25rem;
    }
}

.hero-socials {
    display: flex;
    gap: 1.25rem;
    margin-top: 1.5rem;
    align-items: center;
}

@media(max-width: 767px) {
    .hero-socials {
        justify-content: center;
    }
}

.hero-socials a {
    color: var(--on-surface-variant);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
}

.hero-socials a:hover {
    color: var(--secondary);
    transform: translateY(-2px);
}

/* --- Section Headers --- */
.section-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 2rem;
}

.section-num {
    font-family: var(--font-label);
    font-weight: 500;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--on-secondary-container);
}

.section-title {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.875rem;
    letter-spacing: -0.025em;
    color: var(--primary);
}

/* --- Philosophy / About Section --- */
.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

@media(min-width: 768px) {
    .about-grid {
        grid-template-columns: 8fr 4fr;
    }
}

.about-text {
    line-height: 1.8;
    color: var(--on-surface);
}

.about-text p {
    margin-bottom: 1.5rem;
}

.about-text span.italic-bold {
    font-style: italic;
    font-weight: 600;
}

.pull-quote {
    background: var(--surface-container-low);
    padding: 2rem;
    border-radius: var(--radius-lg);
    font-family: var(--font-body);
    font-style: italic;
    color: var(--on-surface-variant);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    line-height: 1.6;
}

.quote-icon {
    font-size: 2.25rem;
    color: var(--on-secondary-container);
    margin-bottom: 1rem;
}

.quote-author {
    display: block;
    text-align: right;
    font-family: var(--font-label);
    font-style: normal;
    font-weight: 500;
    font-size: 0.875rem;
    margin-top: 1rem;
    color: var(--on-surface-variant);
}

/* --- Career Timeline (Curriculum) --- */
.timeline {
    position: relative;
}

@media(min-width: 768px) {
    .timeline::before {
        content: '';
        position: absolute;
        left: 0;
        top: 0;
        bottom: 0;
        width: 1px;
        background: var(--surface-variant);
    }
}

.timeline-item {
    position: relative;
    padding-bottom: 3rem;
}

@media(min-width: 768px) {
    .timeline-item {
        padding-left: 2.5rem;
    }

    .timeline-item::before {
        /* Circle dot */
        content: '';
        position: absolute;
        left: -4px;
        top: 0.5rem;
        width: 9px;
        height: 9px;
        border-radius: var(--radius-full);
        background: var(--outline-variant);
        box-shadow: 0 0 0 4px var(--background);
        transition: background var(--transition-base);
    }

    .timeline-item:hover::before {
        background: var(--primary);
    }

    /* Present role prominent dot */
    .timeline-item.active::before {
        background: var(--primary);
    }
}

.timeline-header {
    display: flex;
    flex-direction: column;
    margin-bottom: 0.5rem;
}

@media(min-width: 768px) {
    .timeline-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: baseline;
    }
}

.timeline-role {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
    margin-bottom: 0.25rem;
}

.timeline-date {
    font-family: var(--font-label);
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--on-secondary-container);
}

.timeline-org {
    font-family: var(--font-headline);
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--on-secondary-container);
    margin-bottom: 1rem;
}

.timeline-desc {
    color: var(--on-surface-variant);
    font-size: 1rem;
    line-height: 1.6;
    max-width: 42rem;
}

/* --- Projects / Expertise Section --- */
.projects-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media(min-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr 1fr;
        gap: 3rem;
    }
}

.project-list-item {
    margin-bottom: 3rem;
}

.project-category {
    font-family: var(--font-label);
    font-weight: 700;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--on-secondary-container);
    margin-bottom: 1.5rem;
}

.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    font-family: var(--font-label);
    font-weight: 500;
    font-size: 0.875rem;
    padding: 0.375rem 1rem;
    border-radius: var(--radius-pill);
}

.tag-secondary {
    background: var(--secondary-fixed);
    color: var(--on-background);
}

.tag-tertiary {
    background: var(--tertiary-fixed-dim);
    color: var(--on-background);
}

/* Individual full project cards for linear flow */
.project-linear-card {
    background: var(--surface-container-lowest);
    border-radius: var(--radius-lg);
    padding: 2rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.project-linear-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1rem;
}

.project-linear-title {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--primary);
}

.project-linear-desc {
    margin-bottom: 1.5rem;
    color: var(--on-surface-variant);
    font-size: 1rem;
}

.project-linear-meta {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    justify-content: space-between;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    font-family: var(--font-label);
    font-weight: 600;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--on-secondary-container);
}

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

/* --- Blog Section --- */
.blog-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.blog-list-item {
    padding: 1.5rem 2rem;
    display: block;
    transition: all var(--transition-base);
    border-radius: var(--radius-lg);
}

.blog-list-item:hover {
    background: var(--surface-container-low);
    transform: translateX(4px);
}

.blog-meta-row {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-bottom: 0.5rem;
}

.blog-date {
    font-family: var(--font-label);
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--on-surface-variant);
}

.blog-tag {
    font-family: var(--font-label);
    font-weight: 600;
    font-size: 0.75rem;
    padding: 0.125rem 0.5rem;
    border-radius: var(--radius-pill);
    background: var(--tertiary-fixed);
    color: var(--on-tertiary-fixed, var(--tertiary-container));
}

.blog-title {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.blog-summary {
    font-size: 1rem;
    color: var(--on-surface-variant);
    margin-bottom: 0;
}

/* Modal overides */
#article-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
    background: rgba(252, 248, 249, 0.95);
    backdrop-filter: blur(16px);
    overflow-y: auto;
    padding-top: 5rem;
}

.modal-content {
    background: var(--surface-container-lowest);
    max-width: 56rem;
    margin: 0 auto 5rem;
    padding: 4rem 3rem;
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
    position: relative;
    font-family: var(--font-body);
    font-size: 1.125rem;
    color: var(--on-surface);
    line-height: 1.8;
}

.close-button {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 2rem;
    cursor: pointer;
    color: var(--on-surface-variant);
    background: none;
    border: none;
    padding: 0.5rem;
    line-height: 1;
}

/* Footer & CTA */
.cta-box {
    margin-top: 6rem;
    padding: 3rem;
    background: var(--surface-container-low);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    gap: 2rem;
    align-items: center;
    text-align: center;
}

@media(min-width: 768px) {
    .cta-box {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
        align-items: center;
    }
}

.cta-title {
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.cta-btn {
    padding: 0.75rem 2rem;
    background: var(--primary);
    color: var(--on-primary);
    font-family: var(--font-headline);
    font-weight: 700;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: opacity var(--transition-base);
}

.cta-btn:hover {
    opacity: 0.9;
}

footer {
    width: 100%;
    padding: 3rem 0;
    margin-top: 5rem;
    background: var(--surface-container-low);
}

.footer-inner {
    max-width: 80rem;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

@media(min-width: 768px) {
    .footer-inner {
        flex-direction: row;
        justify-content: space-between;
    }
}

.footer-brand {
    font-family: var(--font-body);
    font-style: italic;
    font-weight: 400;
    font-size: 1.125rem;
    letter-spacing: normal;
    color: var(--on-surface-variant);
    display: flex;
    flex-direction: column;
    line-height: 1.4;
}

.footer-copy {
    font-style: italic;
    font-size: 0.875rem;
    color: var(--on-surface-variant);
}

.social-links {
    display: flex;
    gap: 1.5rem;
}

.social-links a {
    font-size: 0.875rem;
    color: rgba(100, 116, 139, 1);
    /* slate-500 */
    text-decoration: none;
    transition: color var(--transition-base);
}

.social-links a:hover {
    color: rgba(13, 148, 136, 1);
    /* teal-600 */
}

.social-links a:first-child {
    text-decoration: underline;
    text-decoration-color: rgba(20, 184, 166, 1);
    /* teal-500 */
}

/* Engagement Styles within Modal */
.engagement-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 3rem;
    padding-top: 2rem;
    background: var(--surface-container-low);
    border-radius: var(--radius-lg);
    padding: 1.5rem 2rem;
    font-family: var(--font-label);
}

.engagement-actions {
    display: flex;
    gap: 1rem;
}

.engagement-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--surface-container);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-pill);
    cursor: pointer;
    color: var(--on-surface-variant);
    transition: all var(--transition-base);
    font-size: 0.875rem;
    font-weight: 500;
}

.engagement-btn:hover {
    background: var(--surface-container-high);
}

.engagement-btn.like-btn.active {
    background: var(--secondary-container);
    color: var(--on-secondary-container);
}

.engagement-btn.dislike-btn.active {
    background: var(--surface-dim);
}

/* Formatting Markdown */
.modal-content h1,
.modal-content h2,
.modal-content h3 {
    font-family: var(--font-headline);
    color: var(--primary);
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.modal-content p {
    margin-bottom: 1.5rem;
}