/* Skills Pages (Generated) - Design System
   Applies to:
   - Generated skill leaf pages: /skills/<category>/<skill>.html
   - Generated category hubs: /skills/<category>/

   Notes:
   - Requires /style.css for shared navigation + base tokens.
*/

.skills-page {
    /* Core surfaces */
    --skills-bg: #0a0f1a;
    --skills-surface: rgba(15, 21, 36, 0.72);
    --skills-surface-2: rgba(19, 41, 75, 0.55);
    --skills-border: rgba(255, 255, 255, 0.10);
    --skills-border-strong: rgba(255, 255, 255, 0.16);
    --skills-text: #ffffff;
    --skills-muted: rgba(255, 255, 255, 0.72);
    --skills-dim: rgba(255, 255, 255, 0.52);
    --skills-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);

    /* Accent defaults (overridden by [data-accent]) */
    --skills-accent: #4B9CD3;
    --skills-accent-rgb: 75, 156, 211;
    --skills-accent-2: #97D4E9;
    --skills-accent-2-rgb: 151, 212, 233;

    /* Sizing */
    --skills-radius: 16px;
    --skills-radius-sm: 12px;
    --skills-pad: 1.5rem;
    --skills-pad-lg: 2rem;
    --skills-max: 1100px;
}

.skills-page {
    font-family: 'DM Sans', ui-sans-serif, system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
    background:
        radial-gradient(900px circle at 12% 8%, rgba(var(--skills-accent-rgb), 0.22) 0%, transparent 60%),
        radial-gradient(700px circle at 88% 12%, rgba(var(--skills-accent-2-rgb), 0.12) 0%, transparent 55%),
        linear-gradient(180deg, #0a0f1a 0%, #070a12 55%, #0a0f1a 100%);
    color: var(--skills-text);
    min-height: 100vh;
    position: relative;
}

.skills-page::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: 0.55;
    background:
        repeating-linear-gradient(
            0deg,
            rgba(255, 255, 255, 0.035) 0px,
            rgba(255, 255, 255, 0.035) 1px,
            transparent 1px,
            transparent 44px
        ),
        repeating-linear-gradient(
            90deg,
            rgba(255, 255, 255, 0.028) 0px,
            rgba(255, 255, 255, 0.028) 1px,
            transparent 1px,
            transparent 44px
        );
    -webkit-mask-image: radial-gradient(circle at 20% 0%, rgba(0, 0, 0, 1) 0%, transparent 72%);
    mask-image: radial-gradient(circle at 20% 0%, rgba(0, 0, 0, 1) 0%, transparent 72%);
}

.skills-page::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background: radial-gradient(circle at 50% 18%, transparent 0%, rgba(0, 0, 0, 0.35) 70%, rgba(0, 0, 0, 0.55) 100%);
    opacity: 0.9;
}

.skills-page .skills-main,
.skills-page .skills-container,
.skills-page #site-footer {
    position: relative;
    z-index: 1;
}

/* Clean up heavy text shadows inherited from /style.css */
.skills-page h1,
.skills-page h2,
.skills-page h3,
.skills-page h4,
.skills-page p,
.skills-page li,
.skills-page span {
    text-shadow: none;
}

/* Accent mapping by category color name */
.skills-page[data-accent="blue"] { --skills-accent: #4B9CD3; --skills-accent-rgb: 75, 156, 211; --skills-accent-2: #97D4E9; --skills-accent-2-rgb: 151, 212, 233; }
.skills-page[data-accent="purple"] { --skills-accent: #a78bfa; --skills-accent-rgb: 167, 139, 250; --skills-accent-2: #c4b5fd; --skills-accent-2-rgb: 196, 181, 253; }
.skills-page[data-accent="orange"] { --skills-accent: #fb923c; --skills-accent-rgb: 251, 146, 60; --skills-accent-2: #fdba74; --skills-accent-2-rgb: 253, 186, 116; }
.skills-page[data-accent="cyan"] { --skills-accent: #22d3ee; --skills-accent-rgb: 34, 211, 238; --skills-accent-2: #67e8f9; --skills-accent-2-rgb: 103, 232, 249; }
.skills-page[data-accent="gray"] { --skills-accent: #a3a3a3; --skills-accent-rgb: 163, 163, 163; --skills-accent-2: #d4d4d4; --skills-accent-2-rgb: 212, 212, 212; }
.skills-page[data-accent="green"] { --skills-accent: #34d399; --skills-accent-rgb: 52, 211, 153; --skills-accent-2: #6ee7b7; --skills-accent-2-rgb: 110, 231, 183; }
.skills-page[data-accent="yellow"] { --skills-accent: #fbbf24; --skills-accent-rgb: 251, 191, 36; --skills-accent-2: #fde68a; --skills-accent-2-rgb: 253, 230, 138; }
.skills-page[data-accent="indigo"] { --skills-accent: #818cf8; --skills-accent-rgb: 129, 140, 248; --skills-accent-2: #a5b4fc; --skills-accent-2-rgb: 165, 180, 252; }
.skills-page[data-accent="red"] { --skills-accent: #f87171; --skills-accent-rgb: 248, 113, 113; --skills-accent-2: #fca5a5; --skills-accent-2-rgb: 252, 165, 165; }
.skills-page[data-accent="teal"] { --skills-accent: #2dd4bf; --skills-accent-rgb: 45, 212, 191; --skills-accent-2: #5eead4; --skills-accent-2-rgb: 94, 234, 212; }
.skills-page[data-accent="slate"] { --skills-accent: #94a3b8; --skills-accent-rgb: 148, 163, 184; --skills-accent-2: #cbd5e1; --skills-accent-2-rgb: 203, 213, 225; }
.skills-page[data-accent="pink"] { --skills-accent: #fb7185; --skills-accent-rgb: 251, 113, 133; --skills-accent-2: #fda4af; --skills-accent-2-rgb: 253, 164, 175; }
.skills-page[data-accent="violet"] { --skills-accent: #c084fc; --skills-accent-rgb: 192, 132, 252; --skills-accent-2: #d8b4fe; --skills-accent-2-rgb: 216, 180, 254; }
.skills-page[data-accent="amber"] { --skills-accent: #f59e0b; --skills-accent-rgb: 245, 158, 11; --skills-accent-2: #fbbf24; --skills-accent-2-rgb: 251, 191, 36; }
.skills-page[data-accent="lime"] { --skills-accent: #a3e635; --skills-accent-rgb: 163, 230, 53; --skills-accent-2: #d9f99d; --skills-accent-2-rgb: 217, 249, 157; }

/* Base layout */
.skills-main {
    padding-top: calc(var(--nav-height) + 3rem);
    padding-bottom: 4.5rem;
}

.skills-container {
    max-width: var(--skills-max);
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .skills-container {
        padding: 0 1.5rem;
    }
}

/* Breadcrumb */
.skills-breadcrumb {
    margin-bottom: 1.25rem;
    font-size: 0.9rem;
    color: var(--skills-dim);
}

.skills-breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.skills-breadcrumb a {
    color: var(--skills-muted);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.skills-breadcrumb a:hover {
    color: var(--skills-text);
    border-color: rgba(var(--skills-accent-rgb), 0.55);
}

.skills-breadcrumb .separator {
    opacity: 0.6;
}

.skills-breadcrumb .current {
    color: var(--skills-text);
    font-weight: 600;
}

/* Reveal animation */
@keyframes skillsRise {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.skills-reveal {
    animation: skillsRise 650ms cubic-bezier(0.2, 0.8, 0.2, 1) both;
    animation-delay: var(--reveal-delay, 0ms);
}

/* Hero */
.skills-hero {
    position: relative;
    isolation: isolate;
    border-radius: var(--skills-radius);
    border: 1px solid var(--skills-border);
    background:
        linear-gradient(135deg,
            rgba(var(--skills-accent-rgb), 0.18) 0%,
            rgba(255, 255, 255, 0.04) 55%,
            rgba(0, 0, 0, 0.12) 100%
        );
    padding: var(--skills-pad-lg);
    overflow: hidden;
    box-shadow: var(--skills-shadow);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.skills-hero--center {
    text-align: center;
}

.skills-hero--center .skills-hero-top {
    justify-content: center;
}

.skills-hero--center .skills-subtitle {
    margin-left: auto;
    margin-right: auto;
}

.skills-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(600px circle at 10% 20%, rgba(var(--skills-accent-rgb), 0.28) 0%, transparent 60%),
        radial-gradient(520px circle at 86% 0%, rgba(var(--skills-accent-2-rgb), 0.18) 0%, transparent 55%);
    opacity: 0.9;
}

.skills-hero > * {
    position: relative;
    z-index: 1;
}

.skills-hero-top {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.skills-hero-icon {
    font-size: 2.35rem;
    line-height: 1;
    filter: drop-shadow(0 10px 22px rgba(0, 0, 0, 0.45));
}

.skills-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.skills-category-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    background: rgba(var(--skills-accent-rgb), 0.14);
    border: 1px solid rgba(var(--skills-accent-rgb), 0.28);
    color: var(--skills-text);
    text-decoration: none;
    font-weight: 700;
    font-size: 0.85rem;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.skills-category-badge:hover {
    background: rgba(var(--skills-accent-rgb), 0.22);
    border-color: rgba(var(--skills-accent-rgb), 0.45);
}

.skills-demand-badge {
    display: inline-flex;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.18);
    background: rgba(255, 255, 255, 0.06);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--skills-muted);
    font-weight: 800;
}

.skills-demand-badge--high {
    background: rgba(16, 185, 129, 0.14);
    border-color: rgba(16, 185, 129, 0.35);
    color: rgba(167, 243, 208, 0.96);
}

.skills-demand-badge--medium {
    background: rgba(245, 158, 11, 0.14);
    border-color: rgba(245, 158, 11, 0.35);
    color: rgba(253, 230, 138, 0.96);
}

.skills-demand-badge--low {
    background: rgba(148, 163, 184, 0.14);
    border-color: rgba(148, 163, 184, 0.35);
    color: rgba(226, 232, 240, 0.92);
}

.skills-title {
    font-family: 'Instrument Serif', ui-serif, Georgia, serif;
    font-weight: 400;
    letter-spacing: -0.02em;
    font-size: clamp(2.2rem, 5vw, 3.25rem);
    line-height: 1.05;
    margin: 0.25rem 0 0.75rem 0;
}

.skills-subtitle {
    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--skills-muted);
    max-width: 68ch;
}

/* Grid layout (leaf pages) */
.skills-layout {
    margin-top: 1.75rem;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 1.25rem;
    align-items: start;
}

@media (max-width: 980px) {
    .skills-layout {
        grid-template-columns: 1fr;
    }
}

.skills-aside {
    position: sticky;
    top: calc(var(--nav-height) + 2rem);
}

@media (max-width: 980px) {
    .skills-aside {
        position: static;
    }
}

/* Cards */
.skills-card {
    padding: var(--skills-pad);
    border-radius: var(--skills-radius-sm);
    border: 1px solid var(--skills-border);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.03) 100%);
    background-color: var(--skills-surface);
    box-shadow: 0 12px 34px rgba(0, 0, 0, 0.28);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.skills-card + .skills-card {
    margin-top: 1.25rem;
}

.skills-card-title {
    font-family: 'Instrument Serif', ui-serif, Georgia, serif;
    font-weight: 400;
    letter-spacing: -0.01em;
    font-size: 1.85rem;
    margin: 0 0 1rem 0;
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
}

.skills-kicker {
    font-family: 'DM Sans', ui-sans-serif, system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: rgba(var(--skills-accent-2-rgb), 0.94);
    background: rgba(var(--skills-accent-rgb), 0.14);
    border: 1px solid rgba(var(--skills-accent-rgb), 0.22);
    padding: 0.2rem 0.5rem;
    border-radius: 999px;
}

.skills-prose p {
    color: var(--skills-muted);
    line-height: 1.8;
    margin: 0.9rem 0 0 0;
}

.skills-prose p:first-child {
    margin-top: 0;
}

/* Tags */
.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skills-tag {
    display: inline-flex;
    align-items: center;
    padding: 0.3rem 0.65rem;
    border-radius: 999px;
    border: 1px solid var(--skills-border);
    background: rgba(255, 255, 255, 0.04);
    color: rgba(255, 255, 255, 0.82);
    font-size: 0.82rem;
    font-weight: 600;
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.skills-tag--sm {
    font-size: 0.76rem;
    padding: 0.22rem 0.55rem;
}

.skills-tag:hover {
    transform: translateY(-1px);
    border-color: rgba(var(--skills-accent-rgb), 0.40);
    background: rgba(var(--skills-accent-rgb), 0.10);
}

/* Aside cards */
.skills-mini-card {
    padding: 1.25rem;
    border-radius: var(--skills-radius-sm);
    border: 1px solid var(--skills-border);
    background: rgba(255, 255, 255, 0.035);
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.24);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.skills-mini-card + .skills-mini-card {
    margin-top: 1rem;
}

.skills-mini-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--skills-dim);
    margin: 0 0 0.75rem 0;
    font-weight: 900;
}

.skills-salary-range {
    font-size: 1.65rem;
    font-weight: 900;
    margin: 0 0 0.25rem 0;
    background: linear-gradient(90deg, rgba(16, 185, 129, 1) 0%, rgba(167, 243, 208, 1) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.skills-note {
    color: var(--skills-dim);
    font-size: 0.92rem;
    line-height: 1.5;
}

.skills-cert-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.skills-cert-item {
    position: relative;
    padding-left: 1.55rem;
    color: var(--skills-muted);
    line-height: 1.6;
    margin: 0.45rem 0 0 0;
    font-weight: 600;
    font-size: 0.92rem;
}

.skills-cert-item::before {
    content: "v";
    position: absolute;
    left: 0;
    top: 0.1rem;
    width: 1.1rem;
    height: 1.1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(16, 185, 129, 0.14);
    border: 1px solid rgba(16, 185, 129, 0.28);
    color: rgba(167, 243, 208, 0.95);
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 900;
}

/* FAQ */
.skills-faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.skills-faq-item {
    border-radius: 12px;
    border: 1px solid var(--skills-border);
    background: rgba(255, 255, 255, 0.04);
    overflow: hidden;
}

.skills-faq-item summary {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 0.95rem 1rem;
    color: var(--skills-text);
    font-weight: 800;
    font-size: 1rem;
    list-style: none;
}

.skills-faq-item summary::-webkit-details-marker {
    display: none;
}

.skills-faq-item summary::after {
    content: "+";
    margin-left: auto;
    color: rgba(var(--skills-accent-2-rgb), 0.92);
    font-weight: 900;
}

.skills-faq-item[open] summary::after {
    content: "-";
}

.skills-faq-answer {
    padding: 0 1rem 1rem 1rem;
}

.skills-faq-answer p {
    margin: 0;
    color: var(--skills-muted);
    line-height: 1.75;
}

/* Related skills */
.skills-related-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.9rem;
}

@media (max-width: 640px) {
    .skills-related-grid {
        grid-template-columns: 1fr;
    }
}

.skills-related-link {
    display: block;
    text-decoration: none;
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid var(--skills-border);
    background: rgba(255, 255, 255, 0.04);
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
    position: relative;
}

.skills-related-link::after {
    content: "->";
    position: absolute;
    top: 1rem;
    right: 1rem;
    color: rgba(var(--skills-accent-2-rgb), 0.7);
    font-weight: 900;
    letter-spacing: 0.06em;
}

.skills-related-link:hover {
    transform: translateY(-2px);
    border-color: rgba(var(--skills-accent-rgb), 0.38);
    background: rgba(var(--skills-accent-rgb), 0.10);
}

.skills-related-title {
    color: var(--skills-text);
    font-weight: 900;
    font-size: 1.02rem;
    margin: 0;
}

.skills-related-desc {
    color: var(--skills-dim);
    font-size: 0.92rem;
    line-height: 1.5;
    margin: 0.45rem 0 0 0;
}

/* Back nav */
.skills-back-nav {
    margin-top: 1.5rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--skills-border);
}

.skills-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(var(--skills-accent-2-rgb), 0.96);
    text-decoration: none;
    font-weight: 900;
    letter-spacing: 0.01em;
    transition: color 0.2s ease, transform 0.2s ease;
}

.skills-back-link:hover {
    color: var(--skills-text);
    transform: translateX(-2px);
}

/* Category hubs */
.skills-grid {
    margin-top: 1.75rem;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

@media (max-width: 900px) {
    .skills-grid {
        grid-template-columns: 1fr;
    }
}

.skills-skill-card {
    display: block;
    text-decoration: none;
    padding: 1.25rem;
    border-radius: 14px;
    border: 1px solid var(--skills-border);
    background: rgba(255, 255, 255, 0.035);
    transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.skills-skill-card:hover {
    transform: translateY(-2px);
    border-color: rgba(var(--skills-accent-rgb), 0.40);
    background: rgba(var(--skills-accent-rgb), 0.09);
}

.skills-skill-card-top {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.75rem;
}

.skills-skill-title {
    color: var(--skills-text);
    font-weight: 900;
    font-size: 1.06rem;
    line-height: 1.25;
    margin: 0;
}

.skills-skill-desc {
    margin: 0.6rem 0 0 0;
    color: var(--skills-dim);
    line-height: 1.55;
}

/* Focus states */
.skills-page a:focus-visible,
.skills-page summary:focus-visible {
    outline: 2px solid rgba(var(--skills-accent-2-rgb), 0.9);
    outline-offset: 3px;
    border-radius: 10px;
}

/* Motion safety */
@media (prefers-reduced-motion: reduce) {
    .skills-reveal {
        animation: none !important;
    }
    .skills-tag:hover,
    .skills-related-link:hover,
    .skills-skill-card:hover,
    .skills-back-link:hover {
        transform: none;
    }
}