/* ==========================================================================
   KURD AI — تووڵەکان (AI Tools) · playful design  ·  v2
   Purple/pink tool-gallery look, aligned with the "Futuristic Glass" v4
   token system. Page identity: purple → pink → indigo → amber.
   Pure CSS — no image assets added.
   ========================================================================== */

/* ---------- page accent tokens (v4 alignment) ---------- */
:root {
    --kai-tools-a: #a855f7;  /* purple */
    --kai-tools-b: #ec4899;  /* pink   */
    --kai-tools-c: #6366f1;  /* indigo */
    --kai-tools-d: #f59e0b;  /* amber  */
}

/* ---------- shared keyframes ---------- */
@keyframes kaiFlow { to { background-position: 220% center; } }
@keyframes kaiShine { 0%, 55% { left: -80%; } 100% { left: 160%; } }
@keyframes kaiRingPulse {
    0% { box-shadow: 0 0 0 0 rgba(168, 85, 247, 0.35); }
    100% { box-shadow: 0 0 0 14px rgba(168, 85, 247, 0); }
}

/* ---------- hero ---------- */
header .inline-flex { animation: kaiPopBadge 0.7s cubic-bezier(0.22, 1, 0.36, 1) both; }
@keyframes kaiPopBadge { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: none; } }
header h2 {
    background-image: linear-gradient(90deg, var(--kai-tools-a), var(--kai-tools-b) 50%, var(--kai-tools-c) 80%, var(--kai-tools-d));
    background-size: 220% auto;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
    animation: kaiHeadIn 0.9s 0.15s cubic-bezier(0.22, 1, 0.36, 1) both, kaiFlow 8s linear infinite;
}
header p { animation: kaiHeadIn 0.9s 0.3s cubic-bezier(0.22, 1, 0.36, 1) both; }
@keyframes kaiHeadIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }

/* ---------- category tabs ---------- */
.cat-tab { position: relative; overflow: hidden; }
.cat-tab .tab-badge { transition: background-color 0.3s ease, color 0.3s ease; }
.cat-tab.active::after {
    content: "";
    position: absolute; top: 0; bottom: 0; left: -80%;
    width: 50%;
    background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.45), transparent);
    transform: skewX(-18deg);
    animation: kaiShine 3s ease-in-out infinite;
    pointer-events: none;
}
.cat-tab:not(.active):hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 26px -10px color-mix(in srgb, var(--kai-tools-a) 40%, transparent);
}

/* category header icon tile */
.cat-header > div > div:first-child {
    animation: kaiRingPulse 2.4s ease-out infinite;
}

/* ---------- tool cards ---------- */
.tool-card { position: relative; }
.tool-card::before {
    content: "";
    position: absolute;
    top: 0; right: 0; left: 0;
    height: 4px;
    z-index: 5;
    background: linear-gradient(90deg, var(--kai-tools-a), var(--kai-tools-b), var(--kai-tools-c), var(--kai-tools-a));
    background-size: 220% auto;
    animation: kaiFlow 6s linear infinite;
}
.tool-card:hover {
    box-shadow: 0 26px 60px -18px color-mix(in srgb, var(--kai-tools-a) 50%, transparent);
}

/* icon tile */
.tool-card > div:first-of-type {
    position: relative;
    background: linear-gradient(160deg, #faf5ff, #fdf2f8);
    box-shadow: 0 10px 26px -10px color-mix(in srgb, var(--kai-tools-a) 55%, transparent);
}
.dark .tool-card > div:first-of-type { background: linear-gradient(160deg, #1e1b2e, #2b1b33); }
.tool-card:hover > div:first-of-type {
    box-shadow: 0 14px 34px -8px color-mix(in srgb, var(--kai-tools-b) 70%, transparent);
}

/* title */
.tool-card h3 { transition: color 0.3s ease; }

/* CTA shine */
.tool-card > div:last-child a { position: relative; overflow: hidden; }
.tool-card > div:last-child a::after {
    content: "";
    position: absolute; top: 0; bottom: 0; left: -80%;
    width: 55%;
    background: linear-gradient(105deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    transform: skewX(-18deg);
    animation: kaiShine 2.8s ease-in-out infinite;
    pointer-events: none;
}

/* ---------- fallbacks ---------- */
@media (prefers-reduced-motion: reduce) {
    header h2, header .inline-flex, header p,
    .tool-card::before, .cat-tab.active::after,
    .cat-header > div > div:first-child,
    .tool-card > div:last-child a::after { animation: none !important; }
    header h2 {
        background-image: none; -webkit-background-clip: border-box; background-clip: border-box;
        color: #111827; -webkit-text-fill-color: #111827;
    }
    .dark header h2 { color: #fff; -webkit-text-fill-color: #fff; }
}

/* ==========================================================================
   v4 · DATA-MATRIX — hero dot-matrix field, scanlines, terminal stat
   readouts, tool-card HUD (node id + signal). Additive, guard-based.
   ========================================================================== */

/* ---------- hero matrix field & scanlines ---------- */
.kai-matrix {
    pointer-events: none;
    background-image: radial-gradient(circle at 1px 1px, rgba(168, 85, 247, 0.45) 1px, transparent 0);
    background-size: 22px 22px;
    opacity: 0.14;
}
.dark .kai-matrix { opacity: 0.22; }

.kai-scanlines {
    pointer-events: none;
    background: repeating-linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 0 1px, transparent 1px 3px);
    mix-blend-mode: overlay;
    opacity: 0.55;
    z-index: 1;
}
.dark .kai-scanlines {
    background: repeating-linear-gradient(to bottom, rgba(0, 0, 0, 0.14) 0 1px, transparent 1px 3px);
}

/* ---------- terminal stat readouts ---------- */
.kai-stat {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.55rem 1rem;
    border-radius: 9999px;
    font-size: 0.7rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    color: #7c3aed;
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(196, 181, 253, 0.5);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 10px 26px -14px rgba(168, 85, 247, 0.5);
    white-space: nowrap;
}
.dark .kai-stat {
    color: #c4b5fd;
    background: rgba(30, 27, 75, 0.5);
    border-color: rgba(168, 85, 247, 0.35);
}
.kai-stat-num {
    font-family: ui-monospace, "Cascadia Mono", "Segoe UI Mono", Consolas, monospace;
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    color: #6d28d9;
}
.dark .kai-stat-num { color: #a78bfa; }
.kai-stat-glow {
    box-shadow: 0 0 0 4px rgba(168, 85, 247, 0.12), 0 14px 34px -14px rgba(168, 85, 247, 0.6);
}
.kai-stat-dot {
    width: 7px; height: 7px; border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 8px rgba(34, 197, 94, 0.8);
    animation: kaiToolLive 1.5s ease-in-out infinite;
}
@keyframes kaiToolLive {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%      { opacity: 0.4; transform: scale(0.8); }
}

/* ---------- tool-card HUD ---------- */
.kai-matrix-card {
    background-image: radial-gradient(circle at 1px 1px, rgba(168, 85, 247, 0.06) 1px, transparent 0);
    background-size: 20px 20px;
}
.kai-tool-hud {
    border-bottom: 1px dashed color-mix(in srgb, var(--kai-tools-a) 25%, transparent);
    padding-bottom: 0.9rem;
}
.kai-tool-idx {
    font-family: ui-monospace, "Cascadia Mono", "Segoe UI Mono", Consolas, monospace;
}
.kai-tool-signal {
    display: inline-flex;
    align-items: flex-end;
    gap: 2px;
    height: 10px;
}
.kai-tool-signal i {
    width: 2.5px;
    height: 4px;
    border-radius: 2px;
    background: linear-gradient(to top, var(--kai-tools-a), var(--kai-tools-d));
    animation: kaiSig 1s ease-in-out infinite;
}
.kai-tool-signal i:nth-child(2) { animation-delay: 0.12s; }
.kai-tool-signal i:nth-child(3) { animation-delay: 0.24s; }
.kai-tool-signal i:nth-child(4) { animation-delay: 0.36s; }
.kai-tool-signal i:nth-child(5) { animation-delay: 0.48s; }
@keyframes kaiSig { 0%, 100% { height: 4px; } 50% { height: 10px; } }

/* ---------- v4 fallbacks ---------- */
html.kai-perf .kai-matrix,
html.kai-perf .kai-scanlines,
html.kai-perf .kai-stat-dot,
html.kai-perf .kai-tool-signal i { animation: none !important; }
html.kai-perf .kai-tool-signal i { height: 7px; }
@media (prefers-reduced-motion: reduce) {
    .kai-matrix, .kai-scanlines, .kai-stat-dot, .kai-tool-signal i { animation: none !important; }
    .kai-tool-signal i { height: 7px; }
}