/* ===================================
   Guillaume Caillet — Portfolio
   Minimal, dark, micro-animated
   =================================== */

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

:root {
    --bg: #1a1a1a;
    --bg-elevated: #222222;
    --bg-card: #252525;
    --text: #f5f0eb;
    --text-muted: rgba(245, 240, 235, 0.45);
    --text-dim: rgba(245, 240, 235, 0.2);
    --border: rgba(245, 240, 235, 0.08);
    --border-hover: rgba(245, 240, 235, 0.15);
    --glow: rgba(245, 240, 235, 0.04);
    --accent: #1400a0;
    --radius: 12px;
    --transition: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    background-color: var(--bg);
    color: var(--text);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

a {
    color: inherit;
    text-decoration: none;
}

::selection {
    background: rgba(20, 0, 160, 0.15);
    color: var(--text);
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 28px 48px;
    pointer-events: none;
}

.nav-logo {
    display: flex;
    align-items: center;
    pointer-events: auto;
    transition: opacity var(--transition-fast);
}

.nav-logo:hover {
    opacity: 0.7;
}

.nav-logo svg {
    display: block;
}

.nav-links {
    display: flex;
    gap: 40px;
    pointer-events: auto;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--text-muted);
    letter-spacing: 0.01em;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--text);
    transition: width var(--transition);
}

.nav-link:hover {
    color: var(--text);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active {
    color: var(--text);
}

/* --- Pages --- */
.page {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition:
        opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        visibility 0.6s;
    padding: 100px 48px 48px;
    overflow-y: auto;
}

.page--active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.page--exit {
    opacity: 0;
    transform: translateY(-20px);
    visibility: hidden;
    pointer-events: none;
}

#landing {
    align-items: center;
    background-color: #ffffff;
    color: #1a1a1a;
    --text: #1a1a1a;
    --text-muted: rgba(26, 26, 26, 0.45);
    --text-dim: rgba(26, 26, 26, 0.2);
    --border: rgba(26, 26, 26, 0.08);
    --border-hover: rgba(26, 26, 26, 0.15);
}

#landing .nav-logo svg circle {
    fill: var(--accent);
}

body.landing-active .nav-link {
    color: #1a1a1a;
}

body.landing-active .nav-link:hover,
body.landing-active .nav-link.active {
    color: #1a1a1a;
}

body.landing-active .nav-link::after {
    background: #1a1a1a;
}

body.landing-active .cursor-trail span {
    color: rgba(26, 26, 26, 0.4);
}

.landing-company {
    color: var(--accent);
    text-decoration: none;
    display: inline-block;
}

/* --- Landing Page --- */
.landing {
    width: 100%;
    max-width: 900px;
    display: flex;
    flex-direction: column;
    gap: 80px;
}

.landing-title {
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 600;
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.landing-title .line {
    display: block;
    opacity: 0;
    transform: translateY(30px);
    filter: blur(8px);
    animation: lineReveal 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.landing-title .line[data-delay="0"] { animation-delay: 0.2s; }
.landing-title .line[data-delay="1"] { animation-delay: 0.4s; }
.landing-title .line[data-delay="2"] { animation-delay: 0.6s; }

@keyframes lineReveal {
    to {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

.landing-sub {
    margin-top: 24px;
    font-size: 0.875rem;
    color: rgba(26, 26, 26, 0.5);
    letter-spacing: 0.02em;
    opacity: 0;
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.9s forwards;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

.landing-contact {
    opacity: 0;
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) 1.1s forwards;
}

.contact-links {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 20px 0;
    border-top: 1px solid rgba(26, 26, 26, 0.1);
    transition: all var(--transition-fast);
    position: relative;
}

.contact-link:last-child {
    border-bottom: 1px solid rgba(26, 26, 26, 0.1);
}

.contact-link::before {
    content: '';
    position: absolute;
    inset: 0 -16px;
    background: rgba(26, 26, 26, 0.03);
    border-radius: 8px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.contact-link:hover::before {
    opacity: 1;
}

.contact-link:hover {
    border-color: rgba(26, 26, 26, 0.2);
    padding-left: 8px;
}

.contact-link:hover + .contact-link {
    border-top-color: rgba(26, 26, 26, 0.2);
}

.contact-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(26, 26, 26, 0.4);
    min-width: 80px;
    transition: color var(--transition-fast);
    position: relative;
    z-index: 1;
}

.contact-link:hover .contact-label {
    color: #1a1a1a;
}

.contact-value {
    font-size: 0.9375rem;
    color: rgba(26, 26, 26, 0.5);
    transition: color var(--transition-fast);
    position: relative;
    z-index: 1;
}

.contact-link:hover .contact-value {
    color: var(--text);
}

/* --- Landing Link Cards --- */
.landing-links {
    opacity: 0;
    animation: fadeIn 0.6s cubic-bezier(0.16, 1, 0.3, 1) 1.1s forwards;
}

.landing-links-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.landing-link-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: #f5f5f5;
    border: 1px solid rgba(26, 26, 26, 0.08);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
    position: relative;
    z-index: 2;
    cursor: pointer;
}

.landing-link-card:hover {
    border-color: transparent;
    transform: translateY(-2px);
}

.landing-link-card-label {
    font-size: 0.9375rem;
    font-weight: 500;
    color: #1a1a1a;
}

.landing-link-card-arrow {
    font-size: 1.125rem;
    color: rgba(26, 26, 26, 0.3);
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.landing-link-card:hover .landing-link-card-arrow {
    transform: translateX(4px);
    color: #1a1a1a;
}

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

/* --- Loader --- */
.loader {
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.loader.done {
    opacity: 0;
    pointer-events: none;
}

.loader-ascii {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 0.55rem;
    line-height: 1.1;
    color: #1a1a1a;
    text-align: center;
    white-space: pre;
    letter-spacing: 0.05em;
}

/* --- Page Title (shared) --- */
.page-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    letter-spacing: -0.03em;
    margin-bottom: 64px;
}

/* --- Who Am I Page --- */
.who {
    width: 100%;
    max-width: 800px;
    padding-top: 20px;
}

.who-intro {
    margin-bottom: 64px;
}

.who-intro p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text);
    margin-bottom: 20px;
}

.who-intro p:last-child {
    margin-bottom: 0;
}

.who-intro s {
    color: var(--text-muted);
}

.who-section {
    margin-bottom: 56px;
}

.who-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 32px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.who-label {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 16px;
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: 20px;
}

.who-text {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text);
    font-weight: 400;
    max-width: 640px;
    margin-bottom: 12px;
}

/* Experience entries */
.experience-entry {
    border-bottom: 1px solid var(--border);
}

.experience-entry:first-of-type {
    border-top: 1px solid var(--border);
}

.experience-header {
    display: grid;
    grid-template-columns: 160px 1fr auto;
    gap: 32px;
    padding: 24px 0;
    cursor: pointer;
    align-items: center;
    transition: opacity var(--transition-fast);
}

.experience-header:hover {
    opacity: 0.7;
}

.experience-toggle {
    font-size: 1.25rem;
    color: var(--text-muted);
    transition: transform var(--transition-fast);
    user-select: none;
}

.experience-entry.open .experience-toggle {
    transform: rotate(45deg);
}

.experience-date {
    font-size: 0.8125rem;
    color: var(--text-muted);
    line-height: 1.6;
    padding-top: 2px;
}

.experience-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.experience-role {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
}

.experience-company {
    font-size: 0.9375rem;
    color: var(--text-muted);
}

.experience-company a {
    color: var(--text-muted);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.experience-company a:hover {
    color: var(--text);
}

.experience-desc {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 0 0 0 192px;
}

.experience-entry.open .experience-desc {
    max-height: 600px;
    padding: 0 0 24px 192px;
}

.experience-desc p {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--text);
    margin-bottom: 12px;
}

.experience-desc p:last-child {
    margin-bottom: 0;
}

.experience-desc strong {
    font-weight: 600;
}

.experience-desc ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.experience-desc li {
    font-size: 0.9375rem;
    line-height: 1.7;
    color: var(--text);
    padding-left: 16px;
    position: relative;
}

.experience-desc li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 4px;
    height: 4px;
    background: var(--text-muted);
    border-radius: 50%;
}

/* Who links */
.who-link {
    display: inline-block;
    font-size: 0.9375rem;
    color: var(--text);
    text-decoration: underline;
    text-underline-offset: 4px;
    text-decoration-color: var(--border-hover);
    transition: text-decoration-color var(--transition-fast);
}

.who-link:hover {
    text-decoration-color: var(--text);
}

.who-links-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.who-links-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.who-link-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition-fast);
}

.who-link-card:hover {
    border-color: transparent;
    transform: translateY(-2px);
}

.who-link-card-label {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text);
}

.who-link-card-arrow {
    font-size: 1.125rem;
    color: var(--text-muted);
    transition: transform var(--transition-fast);
}

.who-link-card:hover .who-link-card-arrow {
    transform: translateX(4px);
}

@media (max-width: 768px) {
    .experience-header {
        grid-template-columns: 1fr auto;
        gap: 16px;
    }

    .experience-header .experience-date {
        grid-column: 1 / -1;
    }

    .experience-desc {
        padding: 0;
    }

    .experience-entry.open .experience-desc {
        padding: 0 0 24px 0;
    }

    .who-links-grid {
        grid-template-columns: 1fr;
    }
}

/* --- Projects Page --- */
.projects {
    width: 100%;
    max-width: 800px;
    padding-top: 20px;
}

.projects-list {
    display: flex;
    flex-direction: column;
}

.project-card {
    display: block;
    border-top: 1px solid var(--border);
    transition: all var(--transition-fast);
    position: relative;
}

.project-card:last-child {
    border-bottom: 1px solid var(--border);
}

.project-card::before {
    content: '';
    position: absolute;
    inset: 0 -20px;
    background: var(--glow);
    border-radius: var(--radius);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.project-card:hover::before {
    opacity: 1;
}

.project-card:hover {
    border-color: var(--border-hover);
}

.project-card:hover + .project-card {
    border-top-color: var(--border-hover);
}

.project-card-inner {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 28px 0;
    position: relative;
    z-index: 1;
    transition: padding var(--transition-fast);
}

.project-card:hover .project-card-inner {
    padding-left: 8px;
}

.project-index {
    font-size: 0.75rem;
    font-weight: 400;
    color: var(--text-dim);
    min-width: 28px;
    font-variant-numeric: tabular-nums;
    transition: color var(--transition-fast);
}

.project-card:hover .project-index {
    color: var(--text-muted);
}

.project-info {
    flex: 1;
}

.project-name {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin-bottom: 4px;
    transition: transform var(--transition-fast);
}

.project-card:hover .project-name {
    transform: translateX(4px);
}

.project-type {
    font-size: 0.8125rem;
    color: var(--text-muted);
    font-weight: 400;
    transition: color var(--transition-fast);
}

.project-card:hover .project-type {
    color: var(--text);
}

.project-arrow {
    font-size: 1.25rem;
    color: var(--text-dim);
    transition:
        color var(--transition-fast),
        transform var(--transition-fast);
}

.project-card:hover .project-arrow {
    color: var(--text);
    transform: translateX(6px);
}

/* Project card stagger animation */
.project-card {
    opacity: 0;
    transform: translateY(12px);
    transition:
        opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.5s cubic-bezier(0.16, 1, 0.3, 1),
        border-color var(--transition-fast),
        padding var(--transition-fast);
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Cursor ASCII Trail --- */
.cursor-trail {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.cursor-trail span {
    position: absolute;
    font-family: 'IBM Plex Mono', monospace;
    font-size: 14px;
    color: var(--text-muted);
    pointer-events: none;
    animation: trailFade 1.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes trailFade {
    0% {
        opacity: 0.6;
        transform: translate(-50%, -50%) scale(1) rotate(0deg);
    }
    100% {
        opacity: 0;
        transform: translate(-50%, -50%) scale(0.3) rotate(45deg);
    }
}

/* --- Page title animation --- */
.page-title {
    opacity: 0;
    transform: translateY(20px);
    filter: blur(6px);
    transition:
        opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        filter 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.page--active .page-title {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
    transition-delay: 0.15s;
}

/* --- Case Study Pages --- */
.case-study {
    width: 100%;
    max-width: 800px;
    padding-top: 20px;
    padding-bottom: 80px;
}

.case-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 48px;
    transition: color var(--transition-fast);
    cursor: pointer;
}

.case-back:hover {
    color: var(--text);
}

.case-header {
    margin-bottom: 64px;
}

.case-meta {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
}

.case-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 600;
    letter-spacing: -0.03em;
    margin-bottom: 20px;
    line-height: 1.15;
}

.case-subtitle {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--text-muted);
    max-width: 640px;
    margin-bottom: 24px;
}

.case-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 32px;
}

.case-tag {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    padding: 4px 12px;
    border: 1px solid var(--border);
    border-radius: 20px;
}

.case-section {
    margin-bottom: 56px;
    opacity: 0;
    transform: translateY(16px);
    transition:
        opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.case-section.visible {
    opacity: 1;
    transform: translateY(0);
}

.case-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.case-image {
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 48px;
}

.case-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius);
}

.case-image figcaption {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 12px;
    text-align: center;
}

.case-image--cover {
    margin-bottom: 56px;
}

.case-image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin: 48px 0;
}

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

.case-section p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text);
    margin-bottom: 16px;
}

.case-section p:last-child {
    margin-bottom: 0;
}

.case-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.case-list li {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text);
    padding-left: 20px;
    position: relative;
}

.case-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-muted);
}

.case-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.case-metric {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: flex;
    flex-direction: column;
    gap: 8px;
    opacity: 0;
    transform: translateY(12px);
    transition:
        opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.case-metric.visible {
    opacity: 1;
    transform: translateY(0);
}

.case-metric-value {
    font-size: 1.75rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text);
}

.case-metric-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .nav {
        padding: 20px 24px;
    }

    .nav-links {
        gap: 24px;
    }

    .page {
        padding: 88px 24px 32px;
        align-items: flex-start;
    }

    .landing {
        gap: 56px;
        justify-content: center;
        min-height: calc(100vh - 120px);
    }

    .contact-link {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        padding: 16px 0;
    }

    .contact-label {
        min-width: unset;
    }

    .experience-item {
        flex-wrap: wrap;
        gap: 8px;
    }

    .experience-role {
        min-width: unset;
    }

    .experience-period {
        margin-left: 0;
        width: 100%;
    }

    .project-card-inner {
        padding: 20px 0;
    }

    .project-name {
        font-size: 1.0625rem;
    }

    .case-study {
        padding-bottom: 48px;
    }

    .case-header {
        margin-bottom: 40px;
    }

    .case-metrics {
        grid-template-columns: 1fr;
    }

    .case-metric {
        padding: 20px;
    }
}

@media (max-width: 480px) {
    .landing-title {
        font-size: 1.75rem;
    }

    .page-title {
        font-size: 1.75rem;
        margin-bottom: 40px;
    }
}