/* ============================================================
   Portfolio — shared styles (index + project pages)
   Loaded after Tailwind CDN. Keep selectors independent from
   Tailwind's generated utilities so this survives config drift.
   ============================================================ */

/* ---------- theme tokens ----------
   Defined as "R G B" triplets so Tailwind's `/opacity` modifiers
   (bg-card/80, border-accent/10, ...) keep working — the tailwind.config
   in each page maps colors to rgb(var(--color-x-rgb) / <alpha-value>).
   Dark is the default brand look; [data-theme="light"] overrides it. */
:root {
    --accent-orange: #ff4d00;
    --color-primary-rgb: 255 255 255;
    --color-secondary-rgb: 148 148 148;
    --color-background-rgb: 17 17 17;
    --color-accent-rgb: 45 45 45;
    --color-card-rgb: 26 26 26;
    --color-tag-rgb: 34 34 34;
    --color-accent-orange-rgb: 255 77 0;
}

:root[data-theme="light"] {
    --color-primary-rgb: 23 23 23;
    --color-secondary-rgb: 90 98 108;
    --color-background-rgb: 250 250 249;
    --color-accent-rgb: 205 205 205;
    --color-card-rgb: 255 255 255;
    --color-tag-rgb: 236 236 234;
}

body {
    background-color: rgb(var(--color-background-rgb));
    transition: background-color 0.3s ease, color 0.3s ease;
}

#theme-toggle i {
    transition: transform 0.4s ease;
}
#theme-toggle:active i {
    transform: rotate(25deg) scale(0.9);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--accent-orange) rgb(var(--color-background-rgb));
}

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: #ff4d00;
    border-radius: 999px;
}

html {
    scroll-behavior: smooth;
}

body {
    overflow-x: hidden;
}

/* ---------- keyframes ---------- */
@keyframes fadeInUp {
    0% { opacity: 0; transform: translateY(24px); }
    100% { opacity: 1; transform: translateY(0); }
}

@keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes spinSlow {
    to { transform: rotate(360deg); }
}

@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255, 77, 0, 0.35); }
    50% { box-shadow: 0 0 0 10px rgba(255, 77, 0, 0); }
}

@keyframes gradientShift {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* ---------- reveal on scroll ---------- */
[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
    transition-delay: var(--reveal-delay, 0ms);
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    [data-reveal] {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .float-anim,
    .spin-slow {
        animation: none !important;
    }
}

.float-anim {
    animation: floatY 6s ease-in-out infinite;
}

.spin-slow {
    animation: spinSlow 18s linear infinite;
}

/* ---------- text gradient ---------- */
.text-gradient {
    background: linear-gradient(90deg, #ff4d00, #ff9d00, #ff4d00);
    background-size: 200% auto;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: gradientShift 6s ease infinite;
}

/* ---------- buttons / interactions ---------- */
.hover-scale { transition: transform 0.3s ease; }
.hover-scale:hover { transform: scale(1.05); }

.hover-lift { transition: transform 0.3s ease; }
.hover-lift:hover { transform: translateY(-2px); }

.hover-glow { transition: box-shadow 0.3s ease; }
.hover-glow:hover { box-shadow: 0 0 15px rgba(255, 77, 0, 0.35); }

.ripple { position: relative; overflow: hidden; }
.ripple::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 60%);
    opacity: 0;
    transform: scale(2);
    transition: opacity 0.5s, transform 0.5s;
}
.ripple:hover::after { opacity: 1; transform: scale(1); }

/* ---------- card hover (mouse-tracked glow) ---------- */
.card-hover {
    position: relative;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s ease;
    will-change: transform;
}

.card-hover::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 77, 0, 0.12), transparent 40%);
    opacity: 0;
    transition: opacity 0.4s;
    z-index: 2;
    pointer-events: none;
}
.card-hover:hover::before { opacity: 1; }

/* ---------- 3D tilt (JS-driven) ---------- */
.tilt {
    transform-style: preserve-3d;
    perspective: 1000px;
    transition: transform 0.15s ease-out, box-shadow 0.3s ease;
    will-change: transform;
}
.tilt:hover {
    box-shadow: 0 20px 40px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 77, 0, 0.15);
}
.tilt-inner {
    transform: translateZ(30px);
}

/* ---------- browser-chrome mockup (project banners) ---------- */
.browser-chrome {
    background: #1a1a1a;
    border-radius: 0.75rem 0.75rem 0 0;
    border: 1px solid rgba(255,255,255,0.06);
    border-bottom: none;
    padding: 0.6rem 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}
.browser-chrome .dot { width: 10px; height: 10px; border-radius: 999px; }
.browser-chrome .bar {
    flex: 1;
    background: #111111;
    border-radius: 999px;
    padding: 0.25rem 0.75rem;
    font-size: 0.7rem;
    color: #888888;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ---------- timeline ---------- */
.timeline {
    position: relative;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 18px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, rgba(255,77,0,0.6), rgba(255,77,0,0.05));
}
@media (min-width: 768px) {
    .timeline::before { left: 50%; margin-left: -1px; }
}
.timeline-item {
    position: relative;
    padding-left: 3rem;
}
@media (min-width: 768px) {
    .timeline-item { padding-left: 0; width: 50%; }
    .timeline-item.left { margin-left: 0; padding-right: 3rem; text-align: right; }
    .timeline-item.right { margin-left: 50%; padding-left: 3rem; }
}
.timeline-dot {
    position: absolute;
    left: 10px;
    top: 0.4rem;
    width: 18px;
    height: 18px;
    border-radius: 999px;
    background: #ff4d00;
    box-shadow: 0 0 0 4px rgba(255,77,0,0.15);
    z-index: 2;
}
@media (min-width: 768px) {
    .timeline-item.left .timeline-dot { left: auto; right: -9px; }
    .timeline-item.right .timeline-dot { left: -9px; }
}

/* ---------- filter buttons ---------- */
.filter-btn {
    transition: all 0.25s ease;
}
.filter-btn[data-active="true"] {
    background: var(--accent-orange);
    color: #ffffff;
}

/* ---------- back to top ---------- */
#backToTop {
    opacity: 0;
    pointer-events: none;
    transform: translateY(12px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}
#backToTop.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

/* ---------- mobile nav sheet ---------- */
#mobileMenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}
#mobileMenu.open {
    max-height: 24rem;
}

/* ---------- hero 3D canvas ---------- */
#hero-3d {
    position: absolute;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}
#hero-3d canvas {
    width: 100% !important;
    height: 100% !important;
}

/* ---------- misc ---------- */
.badge-live {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
.badge-live .dot {
    width: 7px;
    height: 7px;
    border-radius: 999px;
    background: #22c55e;
    box-shadow: 0 0 0 0 rgba(34,197,94,0.6);
    animation: pulseDotGreen 2s infinite;
}
@keyframes pulseDotGreen {
    0% { box-shadow: 0 0 0 0 rgba(34,197,94,0.5); }
    70% { box-shadow: 0 0 0 6px rgba(34,197,94,0); }
    100% { box-shadow: 0 0 0 0 rgba(34,197,94,0); }
}

@media (max-width: 640px) {
    section { padding: 1.5rem 0; }
}