/* =============================================
   COMPONENTS.CSS — UI Components
   ============================================= */

/* --- SCROLL PROGRESS BAR --- */
#scroll-progress-bar {
    position: fixed; top: 0; left: 0; height: 2px; width: 0%;
    background: linear-gradient(90deg, var(--accent-color, #6366f1), var(--gold, #f59e0b));
    z-index: 10001; pointer-events: none;
}

/* --- GRAIN OVERLAY --- */
.grain-overlay {
    position: fixed; inset: 0; z-index: 2; pointer-events: none; opacity: 0.038;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 512 512' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-size: 256px 256px;
}

/* --- MARQUEE --- */
.marquee-track { display: flex; gap: 3rem; animation: marquee 28s linear infinite; width: max-content; }
.marquee-track:hover { animation-play-state: paused; }

/* --- SKILL BARS --- */
.skill-bar-track { height: 3px; background: var(--glass-border); border-radius: 9999px; overflow: hidden; }
.skill-bar-fill  { height: 100%; width: 0; border-radius: 9999px; background: linear-gradient(90deg, var(--accent-color), var(--gold)); transition: width 1.3s cubic-bezier(0.4, 0, 0.2, 1); }

/* --- 3D TILT CARDS --- */
.tilt-wrap { perspective: 900px; }
.tilt-card { transform-style: preserve-3d; will-change: transform; transition: box-shadow 0.4s ease; }
.tilt-card:hover { box-shadow: 0 30px 70px rgba(0, 0, 0, 0.35); }

/* --- PROJECT IMAGE OVERLAY --- */
.proj-img-wrap { position: relative; overflow: hidden; }
.proj-overlay  { position: absolute; inset: 0; background: rgba(0,0,0,0.72); opacity: 0; display: flex; align-items: center; justify-content: center; gap: 1rem; transition: opacity 0.3s; backdrop-filter: blur(4px); }
.proj-img-wrap:hover .proj-overlay { opacity: 1; }

/* --- CONTACT FORM --- */
.form-input {
    width: 100%; background: var(--glass-bg); border: 1px solid var(--glass-border);
    color: var(--text-main); border-radius: 0.75rem; padding: 0.75rem 1rem;
    font-family: 'DM Sans', sans-serif; font-size: 0.9rem; outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-input:focus       { border-color: var(--accent-color); box-shadow: 0 0 0 3px var(--accent-glow); }
.form-input::placeholder { color: var(--text-muted); }
textarea.form-input      { resize: vertical; min-height: 110px; }

/* --- BACK TO TOP --- */
#back-to-top {
    position: fixed; bottom: 2rem; right: 2rem; width: 42px; height: 42px;
    background: var(--glass-bg); border: 1px solid var(--glass-border); border-radius: 50%;
    display: flex; align-items: center; justify-content: center; cursor: none;
    opacity: 0; transform: translateY(16px);
    transition: opacity 0.3s, transform 0.3s, background 0.2s;
    backdrop-filter: blur(12px); z-index: 9998;
}
#back-to-top.visible { opacity: 1; transform: translateY(0); }
#back-to-top:hover   { background: var(--card-bg-hover); }