/* static/css/main.css */

:root {
    /* Premium High-Contrast Studio Dark Palette */
    --bg: #050505;
    --surface: #0a0a0c;
    --card: #0f0f12;
    --card-hover: #141418;
    --border: #1e1e24;
    --border-hover: #2d2d35;
    --border-active: #444450;

    /* Typography Scales */
    --text: #f4f4f6;
    --text-sec: #a1a1aa;
    --text-muted: #6b6b76;

    --accent: #ffffff;
    --accent-dim: #888893;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'DM Sans', sans-serif;
    font-size: 15px;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ─── Typography ─── */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Space Grotesk', sans-serif;
    letter-spacing: -0.03em;
    line-height: 1.1;
    font-weight: 700;
    color: var(--text);
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar {
    width: 4px;
    height: 4px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 2px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-dim);
}

/* ─── Selection ─── */
::selection {
    background: var(--border-active);
    color: var(--text);
}

/* ─── Layout helpers ─── */
.container-base {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ─── Section label ─── */
.label {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-muted);
}

/* ─── Divider line ─── */
.divider {
    height: 1px;
    background: var(--border);
}

/* ─── Cards ─── */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    transition: border-color 0.2s ease, background 0.2s ease;
}

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

/* ─── Buttons ─── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--text);
    color: var(--bg);
    font-family: 'DM Sans', sans-serif;
    font-size: 12.5px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border: 1px solid var(--text);
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.1s ease;
    white-space: nowrap;
}

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

.btn-ghost {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: transparent;
    color: var(--text-sec);
    font-family: 'DM Sans', sans-serif;
    font-size: 12.5px;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border: 1px solid var(--border);
    text-decoration: none;
    cursor: pointer;
    transition: border-color 0.2s ease, color 0.2s ease;
    white-space: nowrap;
}

.btn-ghost:hover {
    border-color: var(--border-hover);
    color: var(--text);
}

/* ─── Tech tag ─── */
.tech-tag {
    display: inline-block;
    padding: 3px 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    font-family: 'IBM Plex Mono', monospace;
    font-size: 10.5px;
    letter-spacing: 0.04em;
    color: var(--text-sec);
    transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.tech-tag:hover {
    border-color: var(--border-hover);
    background: var(--card);
    color: var(--text);
}

/* ─── Dot grid background ─── */
.dot-grid-bg {
    background-image: radial-gradient(circle, #222226 1.2px, transparent 1.2px);
    background-size: 24px 24px;
}

/* ─── Navbar ─── */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(5, 5, 5, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition: transform 0.3s ease;
}

#navbar.nav-hidden {
    transform: translateY(-100%);
}

.nav-link {
    font-family: 'DM Sans', sans-serif;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-sec);
    text-decoration: none;
    transition: color 0.2s ease;
    padding-bottom: 2px;
    border-bottom: 1px solid transparent;
}

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

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

.lang-btn {
    display: flex;
    align-items: center;
    opacity: 0.4;
    text-decoration: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.lang-btn:hover {
    opacity: 0.8;
}

.lang-btn.lang-active {
    opacity: 1;
}

/* ─── Skill bar ─── */
.skill-bar-track {
    height: 3px;
    background: var(--border);
    overflow: hidden;
}

.skill-bar-fill {
    height: 100%;
    background: var(--text-sec);
    width: 0;
    transition: width 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

/* ─── Availability dot ─── */
.avail-dot {
    width: 6px;
    height: 6px;
    background: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
    animation: pulse-dot 2s infinite;
    flex-shrink: 0;
}

@keyframes pulse-dot {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.2);
        opacity: 0.5;
    }
}

/* ─── Reveal animation ─── */
.reveal {
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: none;
}

/* ─── Page header ─── */
.page-header {
    padding-top: 140px;
    padding-bottom: 64px;
    border-bottom: 1px solid var(--border);
    background: linear-gradient(to bottom, var(--surface), var(--bg));
}

/* ─── Feature list checkmark ─── */
.feature-item::before {
    content: '—';
    font-family: 'IBM Plex Mono', monospace;
    color: var(--text-muted);
    margin-right: 10px;
    flex-shrink: 0;
}

/* ─── Cursor blink ─── */
.cursor-blink {
    display: inline-block;
    width: 2px;
    height: 1.1em;
    background: var(--text-sec);
    margin-left: 4px;
    vertical-align: middle;
    animation: blink 1.1s step-end infinite;
}

@keyframes blink {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0;
    }
}

/* ─── Studio Carousel Layout Engine ─── */
.carousel-container {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: var(--surface);
}

.carousel-track {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    width: 100%;
    will-change: transform;
}

.carousel-slide {
    width: 100% !important;
    min-width: 100% !important;
    max-width: 100% !important;
    flex-shrink: 0 !important;
}

.carousel-slide img {
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    display: block;
}

.carousel-dot {
    display: inline-block;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.25);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.carousel-dot-active {
    width: 16px !important;
    background: rgba(255, 255, 255, 0.85) !important;
}

.thumb-btn.thumb-active {
    opacity: 1 !important;
}