/* --- DYNAMIC BACKGROUND --- */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    z-index: -1;
    background: #0b0f14;
}

/* --- SHARED VARIABLES --- */
:root {
    --text-color: #f8fafc;
    --accent-color: #38bdf8;
    --wip-color: #f39c12;
    --card-bg: #111827;
    --border-color: rgba(148, 163, 184, 0.1);
    --neon-rgb: 0, 255, 200; /* bright cyan-green neon */
    --header-bg: #0b0f14;
    --content-bg: #0f1724;
    --font-main: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
}

/* --- RESET & BASE --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: #0b0f14;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 clamp(1rem, 4vw, 2rem);
}

/* --- NAVIGATION --- */
nav {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
    background: rgba(11, 15, 20, 0.8);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: bold;
    letter-spacing: -0.025em;
}

.menu a {
    margin-left: 20px;
    font-size: 0.9rem;
    opacity: 0.8;
    color: var(--accent-color);
    text-decoration: none;
}

.menu a:hover {
    opacity: 1;
}
.menu a:focus-visible,
.project-links a:focus-visible,
.social-links a:focus-visible,
#back-to-top:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 4px;
}

/* --- HERO SECTION --- */
.hero {
    padding: 2.5rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero h1 {
    font-size: clamp(1.4rem, 2.5vw, 1.85rem);
    color: var(--accent-color);
    text-shadow: none;
    margin-bottom: 1.25rem;
    letter-spacing: -0.025em;
}

.description {
    color: #cbd5e1;
    max-width: 600px;
    font-size: 1.1rem;
}

/* --- PROJECT GRID --- */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
    gap: 2rem;
    margin-bottom: 5rem;
}

.project-card {
    scroll-margin-top: 8rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: box-shadow 0.18s ease, border-color 0.3s;
}

.project-card:hover {
    /* Brighter neon halo, thinner (near 1/3 of previous) and symmetric */
    transform: none;
    box-shadow: 0 0 0 1px rgba(var(--neon-rgb), 0.32), 0 0 5px rgba(var(--neon-rgb), 0.16);
}

/* Card media (images/videos) */
.project-media {
    width: 100%;
    height: 100%;
    display: block;
    background-color: #000;
    border-radius: 2px;
    object-fit: cover;
    transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.project-header {
    margin: 0;
    padding: 0.75rem 1.25rem;
    background: var(--header-bg);
    border-bottom: 1px solid var(--border-color);
}

.project-header h3 {
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.4;
    margin: 0;
    color: var(--text-color);
}

/* MEDIA / CONTENT BACKGROUND (middle tone) */
.video-preview,
.image-preview {
    display: block;
    background: var(--content-bg);
    padding: 0.75rem;
    aspect-ratio: 16 / 9;
    border-bottom: 1px solid var(--border-color);
}

.video-preview {
    overflow: hidden;
    border-radius: 0;
    position: relative;
}

.image-preview {
    overflow: hidden;
}

.video-preview .project-media {
    width: 100%;
    height: 100%;
    display: block;
    border-radius: 2px;
    object-fit: cover;
}

.image-preview .project-image {
    width: 100%;
    height: 100%;
    display: block;
    border-radius: 2px;
    object-fit: cover;
    object-position: center;
}

/* TEXT AREA (lightest tone = current card background) */
.project-subtitle,
.project-card p,
.tech-stack,
.project-links {
    padding: 0.75rem 1.25rem;
    margin: 0;
    background: transparent;
}

.project-subtitle {
    color: #cbd5e1;
    font-size: 0.95rem;
    margin: 0;
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--border-color);
    line-height: 1.45;
}

/* Clickable video preview linking to external video */
.video-preview .project-media {
    cursor: pointer;
    border-radius: 2px;
}
/* Hover & focus styles to indicate clickability */
.video-preview:hover .project-media {
    /* Keep the neon halo on the video itself so divider lines stay unchanged. */
    box-shadow: 0 0 0 1px rgba(var(--neon-rgb), 0.36), 0 0 5px rgba(var(--neon-rgb), 0.18);
}
.video-preview:focus-visible {
    outline: 3px solid rgba(56,189,248,0.12);
    outline-offset: 3px;
}

video.project-media {
    object-fit: cover;
}

.project-card p {
    color: #cbd5e1;
    font-size: 0.9rem;
    margin: 0;
    padding: 0.75rem 1.25rem;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 0;
    padding: 0.75rem 1.25rem;
}

.tech-tag {
    --tag-rgb: 56, 189, 248;
    font-size: 0.7rem;
    padding: 4px 10px;
    background: rgba(var(--tag-rgb), 0.08);
    border: 1px solid rgba(var(--tag-rgb), 0.38);
    color: rgb(var(--tag-rgb));
    box-shadow: none;
    text-shadow: 0 0 8px rgba(var(--tag-rgb), 0.18);
}

/* Project buttons and links */
.project-links {
    margin: 0;
    padding: 0.75rem 1.25rem;
    display: flex;
    gap: 20px;
}

.project-links a {
    color: var(--accent-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    padding-bottom: 2px;
    transition: 0.3s;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 8px;
    text-transform: none; /* Thavlik style */
}

.project-links a:hover {
    border-bottom: 1px solid var(--text-color);
    color: var(--text-color);
}

/* Special color for the video button */
.video-link {
    color: var(--wip-color) !important;
}

/* --- FOOTER & EXTRAS --- */
footer {
    padding: 4rem 0;
    text-align: center;
    color: #cbd5e1;
}

footer hr {
    border: 0;
    border-top: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.social-links {
    margin: 1rem 0;
    display: flex;
    justify-content: center;
    gap: 20px;
}

.social-links a, .copy-email {
    color: var(--accent-color);
    text-decoration: none;
    cursor: pointer;
    transition: 0.3s;
    text-transform: none;
}

.social-links a:hover, .copy-email:hover {
    color: var(--text-color);
}

#back-to-top {
    margin-top: 2rem;
    background: transparent;
    border: 1px solid var(--border-color);
    color: #cbd5e1;
    padding: 0.8rem 1.5rem;
    cursor: pointer;
    font-family: var(--font-main);
    transition: 0.3s;
    text-transform: none;
}

#back-to-top:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-2px);
}

/* --- TOAST NOTIFICATION --- */
.toast {
    visibility: hidden;
    background: #1a1a1a;
    color: var(--accent-color);
    border: 1px solid var(--accent-color);
    padding: 1rem;
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: 0.4s;
    z-index: 1000;
}

.toast.show {
    visibility: visible;
    opacity: 1;
}

@media (max-width: 520px) {
    nav .container,
    .social-links {
        gap: 0.75rem;
    }

    nav .container {
        flex-wrap: wrap;
    }

    .menu a {
        margin-left: 0.75rem;
    }

    .hero {
        padding: 2rem 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}

#bg-canvas { opacity: 0.85; pointer-events: none; }
.description { max-width: 720px; font-size: 1rem; line-height: 1.7; }
.intro-note { max-width: 760px; margin-top: 1rem; font-size: 0.95rem; line-height: 1.7; }
.project-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem; }
.project-status { padding: 0.25rem 0.5rem; border: 1px solid var(--accent-color); color: var(--accent-color); font-size: 0.7rem; line-height: 1.4; }
#projects > h2, footer h2 { font-size: 1.1rem; font-weight: 600; }
#projects, #contact { scroll-margin-top: 8rem; }
.project-links { margin-top: auto; flex-wrap: wrap; }
.social-links { flex-wrap: wrap; overflow-wrap: anywhere; }
@media (max-width: 520px) { .logo { font-size: .9rem; } }

/* Recuadros independientes para presentación y proyectos. */
.section-panel {
    width: min(1200px, calc(100% - 2rem));
    margin: 2rem auto;
    padding: clamp(1rem, 3vw, 2rem);
    border: 1px solid var(--border-color);
    background: transparent;
}
.section-panel .project-grid { margin-bottom: 0; }

.eyebrow { color: var(--accent-color); font-size: 0.95rem; margin-bottom: 0.75rem; }
.hero-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; margin-top: 1.5rem; }
.hero-links a { color: var(--accent-color); padding: 0.5rem 0.75rem; border: 1px solid var(--border-color); text-decoration: none; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--accent-color); outline-offset: 4px; }
.section-intro { color: #cbd5e1; margin: 0.5rem 0 1.5rem; max-width: 65ch; }
.project-card details { padding: 0 1.25rem 0.75rem; color: #cbd5e1; font-size: 0.9rem; }
.project-card summary { color: var(--accent-color); cursor: pointer; padding: 0.5rem 0; }
.project-card details p { padding: 0.5rem 0; }
#in-progress-grid { max-width: 560px; }
#in-progress { scroll-margin-top: 8rem; }