/* =========================================================
   ONE SYSTEM
   Light = paper + ink + blue emphasis
   Dark  = navy + white + blue-soft emphasis
   Same components, two contexts. Nothing else.
========================================================= */

body {
    background: var(--paper);
    color: var(--ink);
}

/* ----- Header / logo ----- */

.site-header {
    color: var(--ink);
}

.site-header.on-dark {
    color: var(--on-dark);
}

.site-logo {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: inherit;
}

.logo-dot,
.site-header.on-dark .logo-dot {
    color: inherit;
    opacity: 0.55;
}

.menu-button span {
    height: 2px;
    background: currentColor;
}

/* ----- Menu = same dark as hero-bar / footer / cta ----- */

.fullscreen-menu {
    background: var(--navy);
    color: var(--on-dark);
}

.main-navigation {
    max-width: 920px;
}

.nav-link {
    border-bottom: 1px solid hsla(0, 0%, 100%, 0.12);
    padding: 16px 0;
    color: var(--on-dark-muted);
}

.nav-link:hover,
.nav-link.active {
    color: var(--on-dark);
}

.nav-label {
    font-size: clamp(30px, 4.5vw, 52px);
    font-weight: 700;
    letter-spacing: -0.04em;
    transform: none !important;
}

.menu-footer {
    color: var(--on-dark-muted);
    opacity: 1;
}

/* ----- Hero ----- */

.hero {
    background: var(--paper);
}

.hero-figure {
    background: var(--paper-2);
    margin: 0;
}

.hero-image {
    max-height: min(82vh, 920px);
}

.hero-bar {
    background: var(--paper);
    color: var(--ink);
    border-bottom: 1px solid var(--line);
    padding-top: clamp(32px, 5vw, 52px);
    padding-bottom: clamp(40px, 6vw, 64px);
}

.hero-bar::before {
    display: none;
}

.hero-title {
    color: var(--ink);
    font-weight: 700;
    letter-spacing: -0.045em;
}

.hero-description {
    color: var(--ink-muted);
}

/* Hero uses the light button recipe (not the dark invert) */
.hero .button {
    border-color: var(--navy);
    background: var(--navy);
    color: var(--on-dark);
}

.hero .button:hover {
    background: var(--blue);
    border-color: var(--blue);
    color: var(--on-dark);
}

.hero .button.secondary {
    background: transparent;
    border-color: var(--line);
    color: var(--ink);
}

.hero .button.secondary:hover {
    background: var(--navy);
    border-color: var(--navy);
    color: var(--on-dark);
}

/* ----- Buttons: one recipe, light vs dark context ----- */

.button {
    min-height: 46px;
    padding: 0 22px;
    border: 1px solid var(--navy);
    background: var(--navy);
    color: var(--on-dark);
    font-weight: 600;
    transform: none !important;
}

.button:hover {
    background: var(--blue);
    border-color: var(--blue);
    color: var(--on-dark);
    transform: none !important;
}

.button.secondary {
    background: transparent;
    border-color: var(--line);
    color: var(--ink);
}

.button.secondary:hover {
    background: var(--navy);
    border-color: var(--navy);
    color: var(--on-dark);
}

/* On dark surfaces only */
.about-cta .button,
.fullscreen-menu .button {
    border-color: var(--on-dark);
    background: var(--on-dark);
    color: var(--navy);
}

.about-cta .button:hover {
    background: transparent;
    color: var(--on-dark);
    border-color: var(--on-dark);
}

.about-cta .button.secondary {
    background: transparent;
    border-color: hsla(0, 0%, 100%, 0.35);
    color: var(--on-dark);
}

.about-cta .button.secondary:hover {
    background: hsla(0, 0%, 100%, 0.1);
    border-color: var(--on-dark);
    color: var(--on-dark);
}

/* ----- Light sections ----- */

.page-intro,
.intro-section,
.about-story,
.about-vision,
.stack-section,
.pcms-section {
    background: var(--paper);
    color: var(--ink);
}

.projects-section {
    background: var(--paper-2);
    color: var(--ink);
}

.projects-section--side {
    border-top: 1px solid var(--line);
}

.page-intro,
.intro-section {
    padding-top: clamp(100px, 14vw, 160px);
}

.page-intro--compact {
    padding-top: calc(var(--header-height) + clamp(48px, 8vw, 88px));
}

.section-number,
.projects-label {
    color: var(--blue);
    font-weight: 600;
    letter-spacing: 0.1em;
}

.intro-title,
.projects-heading h2,
.section-heading {
    color: var(--ink);
    font-weight: 700;
    letter-spacing: -0.035em;
}

.page-intro .intro-title,
.intro-section .intro-title {
    font-size: clamp(36px, 5.5vw, 64px);
    max-width: 16ch;
}

.intro-title strong,
.projects-heading h2 em,
.section-heading strong {
    color: var(--blue);
    font-style: normal;
}

.intro-text {
    color: var(--ink-muted);
    font-size: 17px;
    line-height: 1.7;
    max-width: 540px;
}

.page-intro .intro-text + .intro-text {
    margin-top: 16px;
}

.text-link {
    color: var(--navy);
    border-bottom-color: var(--line);
    font-weight: 600;
}

.text-link:hover {
    color: var(--blue);
    border-bottom-color: var(--blue);
}

/* ----- Projects ----- */

.projects-list,
.project-row {
    border-color: var(--line);
    color: var(--ink);
}

.project-row:hover {
    background: hsla(var(--hue), 58%, 42%, 0.06);
    padding-left: 0 !important;
}

.project-number,
.project-type {
    color: var(--ink-muted);
}

.project-name {
    color: var(--ink);
    font-weight: 700;
}

.project-action {
    color: var(--blue);
    font-weight: 600;
}

/* ----- Dark band: CTA + footer (same as hero-bar / menu) ----- */

.about-cta,
.site-footer {
    background: var(--navy);
    color: var(--on-dark);
    border-top: 0;
}

.about-cta .intro-title {
    color: var(--on-dark);
}

.about-cta .intro-title strong {
    color: var(--blue-soft);
}

.about-cta .intro-text {
    color: var(--on-dark-muted);
}

.footer-top {
    color: var(--on-dark-muted);
}

.footer-big-text {
    color: var(--on-dark);
    font-weight: 700;
    letter-spacing: -0.04em;
}

.footer-big-text span {
    color: inherit;
    opacity: 0.55;
}

.footer-social {
    color: var(--on-dark-muted);
    border-color: hsla(0, 0%, 100%, 0.2);
}

.footer-social:hover {
    color: var(--on-dark);
    border-color: var(--on-dark);
}

/* ----- Timeline ----- */

.about-story {
    background: var(--paper-2);
}

.about-story-header .section-heading {
    margin-top: 16px;
    font-size: clamp(34px, 5vw, 58px);
    font-weight: 700;
    letter-spacing: -0.04em;
    line-height: 1.05;
    max-width: 14ch;
}

.timeline {
    margin-top: clamp(40px, 6vw, 72px);
    border-top: 1px solid var(--line);
}

.timeline-item {
    border-color: var(--line);
    padding: clamp(22px, 3vw, 32px) 0;
}

.timeline-year {
    color: var(--blue);
    font-weight: 700;
    font-size: 14px;
}

.timeline-body h3 {
    color: var(--ink);
    font-weight: 700;
    font-size: clamp(20px, 2.2vw, 24px);
    letter-spacing: -0.025em;
}

.timeline-body p {
    color: var(--ink-muted);
    font-size: 16px;
    line-height: 1.65;
}

/* ----- Contact ----- */

.contact-actions {
    display: grid;
    gap: 22px;
    margin-top: 36px;
    max-width: 560px;
}

.contact-email {
    color: var(--ink-muted);
    font-size: 17px;
    line-height: 1.65;
    margin: 0;
}

.contact-email a {
    color: var(--blue);
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.contact-email a:hover {
    color: var(--navy);
}

/* ----- Blog ----- */

.blog-list-section {
    background: var(--paper-2);
    color: var(--ink);
}

.blog-list-link:hover {
    background: hsla(var(--hue), 58%, 42%, 0.06);
}

.blog-list-link time,
.blog-list-more,
.blog-post-date {
    color: var(--blue);
}

.blog-list-link h2 {
    text-transform: none;
    color: var(--ink);
}

.blog-list-link:hover .blog-list-more {
    color: var(--navy);
}

/* ----- Misc leftovers ----- */

.section-heading {
    text-transform: none;
    color: var(--ink);
}

.section-heading strong {
    color: var(--blue);
    font-weight: 700;
}

.project-info h3 {
    color: var(--ink);
    font-family: var(--font-sans);
    font-weight: 700;
}

.project-row:hover .project-action {
    color: var(--navy);
}

.list-empty {
    color: var(--ink-muted);
    font-size: 16px;
}

.about-cta .hero-actions {
    margin-top: 28px;
}

.about-cta .intro-title {
    max-width: 18ch;
}

.page-intro,
.intro-section {
    gap: 20px;
}

.projects-heading h2 {
    font-weight: 700;
}

.projects-more .button {
    /* light context */
    border-color: var(--navy);
    background: var(--navy);
    color: var(--on-dark);
}

.projects-more .button:hover {
    background: var(--blue);
    border-color: var(--blue);
}

/* Hero bar: stack cleanly below ~900px */
@media (max-width: 900px) {
    .hero-bar {
        grid-template-columns: 1fr;
        grid-template-areas:
            "title"
            "desc"
            "actions";
        align-items: start;
        row-gap: 12px;
    }

    .hero-actions {
        justify-content: flex-start;
        margin-top: 4px;
    }

    .hero-title {
        font-size: clamp(40px, 11vw, 56px);
    }
}

/* Menu: comfortable single column earlier */
@media (max-width: 900px) {
    .main-navigation {
        grid-template-columns: 1fr;
        max-width: 100%;
    }

    .nav-link {
        padding: 14px 0;
    }
}

/* Mobile header */
@media (max-width: 600px) {
    .site-header {
        background: hsla(40, 14%, 96%, 0.92);
        color: var(--ink);
    }

    .site-header.on-dark {
        background: hsla(215, 55%, 12%, 0.94);
        color: var(--on-dark);
    }

    .hero-image {
        max-height: 52vh;
    }

    .button {
        min-height: 44px;
    }
}

/* Timeline year shouldn't look like mono microcopy */
.timeline-year {
    font-size: 14px;
    letter-spacing: 0.02em;
    text-transform: none;
}

/* Header battery: quieter */
.header-battery {
    opacity: 0.7;
}

.header-battery:hover {
    opacity: 1;
}

/* ----- Interest cards (personal site) ----- */

.interest-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(16px, 3vw, 28px);
    margin-top: clamp(8px, 2vw, 16px);
}

.interest-grid--about {
    margin-top: clamp(36px, 5vw, 56px);
}

.interest-card {
    padding: clamp(22px, 3vw, 32px);
    border: 1px solid var(--line);
    background: var(--paper);
}

.interests-section .interest-card {
    background: var(--paper);
}

.interest-card h3 {
    margin: 0 0 10px;
    font-size: clamp(18px, 2vw, 22px);
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--ink);
}

.interest-card p {
    margin: 0;
    font-size: 15px;
    line-height: 1.6;
    color: var(--ink-muted);
}

@media (max-width: 700px) {
    .interest-grid {
        grid-template-columns: 1fr;
    }
}