/* ========================================
   CSS Variables & Base
   ======================================== */

:root {
    /* Colors */
    --bg-primary: #0d0d0d;
    --bg-secondary: #161616;
    --bg-drawer: #1a1a1a;
    
    --text-primary: #e8e8e8;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    
    --accent: #5ba3a3;           /* Teal - for links */
    --accent-hover: #6fb8b8;
    --accent-subtle: rgba(91, 163, 163, 0.15);

    --header-accent: #6b7a5c;    /* Moss green - for headers */
    
    --border: #2a2a2a;
    --border-light: #333333;
    
    /* Typography */
    --font-sans: 'IBM Plex Sans', -apple-system, sans-serif;
    --font-serif: 'IBM Plex Serif', Georgia, serif;
    
    /* Spacing */
    --drawer-width: 520px;
    --profile-width: 650px;
    
    /* Transitions */
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: 0.2s ease;
}

/* ========================================
   Reset & Base
   ======================================== */

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

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

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

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    background-image: url('../assets/bg.jpg');
    background-size: cover;
    background-position: right center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: linear-gradient(
        to left,
        rgba(13, 13, 13, 0.2) 0%,
        rgba(13, 13, 13, 0) 100%
    );
    pointer-events: none;
    z-index: 0;
}



/* ========================================
   Brain Logo
   ======================================== */

.brain-logo {
    position: fixed;
    top: 24px;
    right: 24px;
    width: 200px;
    height: 200px;
    z-index: 10;
    opacity: 0;
    transition: opacity var(--transition-smooth);
    animation: entranceFadeBrain 0.8s ease forwards;
    animation-delay: 1.8s;
}

.brain-logo:hover {
    opacity: 0.9;
}

.brain-logo svg {
    width: 100%;
    height: 100%;
}

.brain-logo.hidden {
    opacity: 0;
    pointer-events: none;
    animation: none;
}

@keyframes entranceFadeBrain {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 0.6; transform: translateY(0); }
}

/* Hide brain logo on mobile */
@media (max-width: 900px) {
    .brain-logo {
        display: none;
    }
}

/* Brain logo animation - controlled by JavaScript for adjacent spreading */
/* Timing controlled in JavaScript: 0.25s rise, 1s decay */
#somas g, [id^="somas"] g {
    opacity: 0;
}

/* ========================================
   Layout Container
   ======================================== */

.container {
    display: flex;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

/* ========================================
   Profile Card
   ======================================== */

.profile-card {
    width: var(--profile-width);
    min-height: 100vh;
    padding: 60px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.profile-image-wrapper {
    width: min(280px, 45vw);
    height: auto;
    aspect-ratio: 1 / 1;
    border-radius: 50%;
    -webkit-border-radius: 50%;
    overflow: hidden;
    margin-bottom: 32px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    /* Multiple fallbacks for circular clipping */
    -webkit-mask-image: -webkit-radial-gradient(white, black);
    mask-image: radial-gradient(white, black);
    clip-path: circle(50%);
    -webkit-clip-path: circle(50%);
    transform: translateZ(0);
    flex-shrink: 0;
    /* Staggered entrance animation */
    opacity: 0;
    animation: entranceFade 0.8s ease forwards;
    animation-delay: 0.1s;
}

.profile-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: saturate(0.9);
    transition: filter var(--transition-fast);
}

.profile-image:hover {
    filter: saturate(1);
}

/* Profile brain overlay (mobile only) */
.profile-brain {
    display: none;
}

@media (max-width: 900px) {
    .profile-image-wrapper {
        cursor: pointer;
        position: relative;
    }

    .profile-brain {
        display: block;
        position: absolute;
        inset: 15%;
        opacity: 0;
        transition: opacity 0.4s ease;
        pointer-events: none;
    }

    .profile-brain svg {
        width: 100%;
        height: 100%;
    }

    .profile-image-wrapper.show-brain .profile-image {
        opacity: 0;
    }

    .profile-image-wrapper.show-brain .profile-brain {
        opacity: 1;
    }

    .profile-image {
        transition: opacity 0.4s ease;
    }
}

.name {
    font-family: var(--font-serif);
    font-size: 2.25rem;
    font-weight: 400;
    letter-spacing: 0.01em;
    margin-bottom: 8px;
    color: var(--text-primary);
    min-height: 2.25rem;
}

/* BlurText name animation */
.name .blur-letter {
    display: inline-block;
    filter: blur(8px);
    opacity: 0;
    transform: translateY(-8px);
    transition: filter 0.5s ease, opacity 0.5s ease, transform 0.5s ease;
}

.name .blur-letter.revealed {
    filter: blur(0px);
    opacity: 1;
    transform: translateY(0);
}

/* DecryptedText tagline */
.tagline {
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 20px;
    min-height: 1.2em;
}

.tagline .encrypted-char {
    color: var(--border-light);
}

.tagline .revealed-char {
    color: var(--text-muted);
}

/* ClickSpark canvas */
#spark-canvas {
    position: fixed;
    inset: 0;
    z-index: 100;
    pointer-events: none;
}

/* ========================================
   Social Links
   ======================================== */

.social-links {
    display: flex;
    gap: 20px;
    margin-bottom: 56px;
    opacity: 0;
    animation: entranceFade 0.6s ease forwards;
    animation-delay: 1.2s;
}

.social-link svg {
    width: 24px;
    height: 24px;
}

.social-link {
    color: var(--text-secondary);
    transition: color var(--transition-fast), transform var(--transition-fast);
    padding: 4px;
    animation: hintBounce 2s ease-in-out infinite;
    animation-delay: calc(var(--social-index, 0) * 0.2s);
}

.social-link:nth-child(1) { --social-index: 0; }
.social-link:nth-child(2) { --social-index: 1; }
.social-link:nth-child(3) { --social-index: 2; }
.social-link:nth-child(4) { --social-index: 3; }

.social-link:hover {
    animation: none;
}

.social-link:hover {
    color: var(--accent);
    transform: translateY(-2px);
}

/* ========================================
   Navigation
   ======================================== */

.nav {
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 100%;
    max-width: 220px;
    opacity: 0;
    animation: entranceFade 0.6s ease forwards;
    animation-delay: 1.5s;
}

.nav-item {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-sans);
    font-size: 1.1rem;
    font-weight: 400;
    padding: 14px 20px;
    text-align: left;
    cursor: pointer;
    border-radius: 6px;
    transition:
        color var(--transition-fast),
        background-color var(--transition-fast);
    position: relative;
    animation: subtlePulse 3s ease-in-out infinite;
    animation-delay: calc(var(--nav-index, 0) * 0.15s);
}

.nav-item:nth-child(1) { --nav-index: 0; }
.nav-item:nth-child(2) { --nav-index: 1; }
.nav-item:nth-child(3) { --nav-index: 2; }
.nav-item:nth-child(4) { --nav-index: 3; }

.nav-item:hover {
    animation: none;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background-color: var(--accent);
    border-radius: 2px;
    transition: height var(--transition-fast);
}

.nav-item:hover {
    color: var(--text-primary);
    background-color: var(--accent-subtle);
}

.nav-item.active {
    color: var(--text-primary);
    background-color: var(--accent-subtle);
}

.nav-item.active::before {
    height: 24px;
}

/* ========================================
   Content Drawer
   ======================================== */

.content-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--drawer-width);
    height: 100vh;
    background-color: var(--bg-drawer);
    border-left: 1px solid var(--border);
    transform: translateX(100%);
    transition: transform var(--transition-smooth);
    overflow-y: auto;
    padding: 60px 48px;
    z-index: 20;
}

.content-drawer.open {
    transform: translateX(0);
}

.drawer-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 28px;
    cursor: pointer;
    padding: 8px;
    line-height: 1;
    transition: color var(--transition-fast);
}

.drawer-close:hover {
    color: var(--text-primary);
}

/* ========================================
   Drawer Sections
   ======================================== */

.drawer-section {
    display: none;
}

.drawer-section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes subtlePulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@keyframes hintBounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-3px); }
}

@keyframes entranceFade {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.drawer-section h2 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

/* ========================================
   Research Section
   ======================================== */

.research-intro {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 32px;
    line-height: 1.7;
}

.research-block {
    margin-bottom: 28px;
}

.research-tag {
    display: inline-block;
    font-family: var(--font-sans);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--header-accent);
    margin-bottom: 6px;
}

.research-block h3 {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.research-block p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.research-block em {
    font-style: italic;
    color: var(--text-primary);
}

/* ========================================
   Publications Section
   ======================================== */

.publication {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border);
}

.publication:last-child {
    border-bottom: none;
}

.pub-title {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.4;
}

.pub-authors {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
    line-height: 1.5;
    word-wrap: break-word;
}

.pub-authors strong {
    color: var(--text-primary);
    font-weight: 500;
}

.pub-journal {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 12px;
}

.pub-links {
    display: flex;
    gap: 12px;
}

.pub-link {
    font-size: 0.8rem;
    color: var(--accent);
    text-decoration: none;
    padding: 4px 12px;
    border: 1px solid var(--accent);
    border-radius: 4px;
    transition: 
        background-color var(--transition-fast),
        color var(--transition-fast);
}

.pub-link:hover {
    background-color: var(--accent);
    color: var(--bg-primary);
}

.loading-container {
    display: flex;
    align-items: center;
    gap: 16px;
}

.loading-text {
    color: var(--text-muted);
    font-style: italic;
}

.loading-brain {
    width: 32px;
    height: 32px;
}


/* ========================================
   Talks Section
   ======================================== */

.talk {
    margin-bottom: 24px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border);
}

.talk:last-child {
    border-bottom: none;
}

.talk-title {
    font-family: var(--font-serif);
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 6px;
}

.talk-venue {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.talk-type {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--header-accent);
    background-color: rgba(107, 122, 92, 0.15);
    padding: 3px 8px;
    border-radius: 3px;
    margin-bottom: 8px;
}

.talk-date {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ========================================
   CV Section
   ======================================== */

.cv-section {
    margin-bottom: 36px;
}

.cv-section h3 {
    font-family: var(--font-sans);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--header-accent);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}

.cv-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.cv-date {
    font-size: 0.85rem;
    color: var(--text-muted);
    padding-top: 2px;
}

.cv-content strong {
    font-weight: 500;
    color: var(--text-primary);
    display: block;
    margin-bottom: 4px;
}

.cv-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 2px;
}

.cv-detail {
    color: var(--text-muted) !important;
    font-size: 0.85rem !important;
}

.cv-download {
    display: inline-block;
    margin-top: 24px;
    padding: 12px 24px;
    background-color: var(--accent);
    color: var(--bg-primary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 6px;
    transition: background-color var(--transition-fast);
}

.cv-download:hover {
    background-color: var(--accent-hover);
}

/* ========================================
   Scrollbar Styling
   ======================================== */

.content-drawer::-webkit-scrollbar {
    width: 8px;
}

.content-drawer::-webkit-scrollbar-track {
    background: var(--bg-drawer);
}

.content-drawer::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 4px;
}

.content-drawer::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ========================================
   Responsive
   ======================================== */

@media (max-width: 900px) {
    :root {
        --drawer-width: 100%;
        --profile-width: 100%;
    }

    html, body {
        overflow: hidden;
        position: fixed;
        width: 100%;
        height: 100%;
    }

    .container {
        flex-direction: column;
        height: 100vh;
        height: 100dvh;
        overflow: hidden;
        position: fixed;
        width: 100%;
    }

    .profile-card {
        min-height: 100vh;
        min-height: 100dvh;
        height: 100vh;
        height: 100dvh;
        padding: 40px 24px;
        overflow: hidden;
        position: fixed;
        width: 100%;
    }

    .content-drawer {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding-bottom: 120px;
        width: 100%;
        padding: 60px 24px;
    }
}