/* ============================================================
   COMPONENTS.CSS — Nav, Buttons, Cards, Glass, Footer
   Mothrills 3D Studio
   ============================================================ */

/* ════════════════════════════════════════════════════════════
   NAV
   ════════════════════════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: 72px;
  display: flex;
  align-items: center;
  transition: background var(--duration-slow) var(--ease),
              border-color var(--duration-slow) var(--ease),
              backdrop-filter var(--duration-slow) var(--ease);
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(8, 8, 16, 0.8);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom-color: var(--border);
  box-shadow: 0 1px 0 rgba(79, 172, 254, 0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* Logo */
.nav__logo {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav__logo-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent), 0 0 16px rgba(79, 172, 254, 0.4);
  flex-shrink: 0;
  animation: dot-pulse 3s ease-in-out infinite;
}

@keyframes dot-pulse {
  0%, 100% { box-shadow: 0 0 8px var(--accent), 0 0 16px rgba(79, 172, 254, 0.4); }
  50%       { box-shadow: 0 0 12px var(--accent), 0 0 28px rgba(79, 172, 254, 0.6); }
}

/* Links */
.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  box-shadow: var(--neon-sm);
  transition: width var(--duration) var(--ease-out);
}

.nav__link:hover  { color: var(--text-primary); }
.nav__link:hover::after,
.nav__link.is-active::after { width: 100%; }
.nav__link.is-active { color: var(--text-primary); }

.nav__cta { margin-left: var(--space-4); }

/* Hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.nav__toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: transform var(--duration) var(--ease),
              opacity var(--duration) var(--ease);
}

.nav__toggle.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__toggle.is-open span:nth-child(2) { opacity: 0; }
.nav__toggle.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Mobile overlay */
.nav__mobile {
  display: none;
  position: fixed;
  inset: 72px 0 0 0;
  background: rgba(8, 8, 16, 0.97);
  backdrop-filter: blur(32px) saturate(180%);
  -webkit-backdrop-filter: blur(32px) saturate(180%);
  z-index: 99;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  border-top: 1px solid var(--border);
}

.nav__mobile.is-open { display: flex; }

.nav__mobile-link {
  font-size: var(--text-3xl);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease);
}

.nav__mobile-link:hover { color: var(--text-primary); }

@media (max-width: 768px) {
  .nav__links { display: none; }
  .nav__toggle { display: flex; }
}

/* ════════════════════════════════════════════════════════════
   BUTTONS
   ════════════════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
  padding: 11px 22px;
  border-radius: var(--radius);
  transition: all var(--duration) var(--ease);
  white-space: nowrap;
  position: relative;
}

/* Primary — neon blue fill */
.btn--primary {
  background: linear-gradient(135deg, #4facfe 0%, #1a7eff 100%);
  color: #fff;
  box-shadow: 0 0 24px rgba(79, 172, 254, 0.3),
              0 2px 8px rgba(0, 0, 0, 0.4),
              inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.btn--primary:hover {
  background: linear-gradient(135deg, #6dbeff 0%, #3a92ff 100%);
  box-shadow: 0 0 36px rgba(79, 172, 254, 0.5),
              0 4px 16px rgba(0, 0, 0, 0.4),
              inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.btn--primary:active { transform: translateY(0); }

/* Outline — glass + neon border */
.btn--outline {
  background: rgba(79, 172, 254, 0.06);
  color: var(--accent);
  border: 1px solid rgba(79, 172, 254, 0.3);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.btn--outline:hover {
  background: rgba(79, 172, 254, 0.12);
  border-color: rgba(79, 172, 254, 0.6);
  box-shadow: 0 0 20px rgba(79, 172, 254, 0.2),
              inset 0 1px 0 rgba(255, 255, 255, 0.08);
  transform: translateY(-1px);
}

/* Ghost — minimal */
.btn--ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn--ghost:hover {
  background: var(--glass);
  color: var(--text-primary);
  border-color: var(--border-hover);
}

/* Sizes */
.btn--sm  { font-size: var(--text-xs); padding: 8px 15px; }
.btn--lg  { font-size: var(--text-base); padding: 14px 28px; border-radius: var(--radius-lg); }

.btn__arrow {
  display: inline-block;
  transition: transform var(--duration) var(--ease-out);
}
.btn:hover .btn__arrow { transform: translateX(3px); }

/* ════════════════════════════════════════════════════════════
   GLASS CARD — premium frosted glass
   ════════════════════════════════════════════════════════════ */
.glass-card {
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.07) 0%,
    rgba(255, 255, 255, 0.02) 100%
  );
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    0 4px 24px rgba(0, 0, 0, 0.3);
  transition: border-color var(--duration) var(--ease),
              box-shadow var(--duration) var(--ease),
              transform var(--duration-slow) var(--ease-out);
}

.glass-card:hover {
  border-color: rgba(79, 172, 254, 0.2);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 30px rgba(79, 172, 254, 0.08),
    0 8px 40px rgba(0, 0, 0, 0.4);
}

.glass-card--lift:hover { transform: translateY(-4px); }

/* ════════════════════════════════════════════════════════════
   SERVICE CARD
   ════════════════════════════════════════════════════════════ */
.service-card {
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: linear-gradient(
    135deg,
    rgba(255, 255, 255, 0.05) 0%,
    rgba(255, 255, 255, 0.015) 100%
  );
  border: 1px solid var(--border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.07),
    0 4px 20px rgba(0, 0, 0, 0.25);
  transition: border-color var(--duration) var(--ease),
              box-shadow var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

/* Inner glow spot on hover */
.service-card::before {
  content: '';
  position: absolute;
  top: -60px;
  left: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(79, 172, 254, 0.12) 0%, transparent 70%);
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease);
  pointer-events: none;
}

.service-card:hover::before { opacity: 1; }

.service-card:hover {
  border-color: rgba(79, 172, 254, 0.25);
  transform: translateY(-5px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 40px rgba(79, 172, 254, 0.1),
    0 20px 60px rgba(0, 0, 0, 0.4);
}

.service-card__icon {
  width: 40px;
  height: 40px;
  margin-bottom: var(--space-5);
  color: var(--accent);
  filter: drop-shadow(0 0 6px rgba(79, 172, 254, 0.5));
}

.service-card__name {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-3);
  color: var(--text-primary);
}

.service-card__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.65;
}

.service-card__list {
  margin-top: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.service-card__list li {
  font-size: var(--text-sm);
  color: var(--text-muted);
  padding-left: var(--space-4);
  position: relative;
}

.service-card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.5;
  box-shadow: 0 0 4px var(--accent);
}

/* ════════════════════════════════════════════════════════════
   PORTFOLIO CARD
   ════════════════════════════════════════════════════════════ */
.portfolio-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--surface);
  cursor: pointer;
  display: block;
  border: 1px solid var(--border);
  transition: border-color var(--duration) var(--ease),
              box-shadow var(--duration-slow) var(--ease-out);
}

.portfolio-card:hover {
  border-color: rgba(79, 172, 254, 0.15);
  box-shadow: 0 0 40px rgba(79, 172, 254, 0.05), 0 20px 60px rgba(0, 0, 0, 0.5);
}

.portfolio-card__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  position: relative;
}

.portfolio-card__media img,
.portfolio-card__media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 700ms var(--ease-out), filter 700ms var(--ease-out);
  filter: brightness(0.85) saturate(0.9);
}

.portfolio-card:hover .portfolio-card__media img,
.portfolio-card:hover .portfolio-card__media video {
  transform: scale(1.05);
  filter: brightness(1) saturate(1.1);
}

.portfolio-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(8, 8, 16, 0.92) 0%,
    rgba(8, 8, 16, 0.4) 40%,
    transparent 70%
  );
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease);
}

.portfolio-card:hover .portfolio-card__overlay { opacity: 1; }

.portfolio-card__info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-6);
  transform: translateY(10px);
  opacity: 0;
  transition: transform var(--duration-slow) var(--ease-out),
              opacity var(--duration-slow) var(--ease-out);
}

.portfolio-card:hover .portfolio-card__info { transform: translateY(0); opacity: 1; }

.portfolio-card__type {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  text-shadow: var(--neon-sm);
  margin-bottom: var(--space-1);
}

.portfolio-card__title {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

/* ════════════════════════════════════════════════════════════
   PROCESS STEP
   ════════════════════════════════════════════════════════════ */
.process-step {
  display: flex;
  gap: var(--space-8);
  padding: var(--space-8) 0;
  border-bottom: 1px solid var(--border);
  transition: border-color var(--duration) var(--ease);
}

.process-step:last-child { border-bottom: none; }

.process-step__number {
  font-size: var(--text-4xl);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--surface-2);
  line-height: 1;
  flex-shrink: 0;
  min-width: 52px;
  transition: color var(--duration-slow) var(--ease),
              text-shadow var(--duration-slow) var(--ease);
}

.process-step:hover .process-step__number {
  color: rgba(79, 172, 254, 0.2);
  text-shadow: 0 0 30px rgba(79, 172, 254, 0.3);
}

.process-step__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-2);
}

.process-step__desc {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ════════════════════════════════════════════════════════════
   CTA BANNER
   ════════════════════════════════════════════════════════════ */
.cta-banner {
  position: relative;
  padding: var(--space-24) var(--space-8);
  text-align: center;
  overflow: hidden;
}

/* Background: subtle dark gradient with blue glow */
.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 100% at 50% 100%, rgba(79, 172, 254, 0.07) 0%, transparent 70%),
    linear-gradient(to bottom, var(--bg) 0%, var(--bg-raised) 50%, var(--bg) 100%);
  pointer-events: none;
}

/* Top hairline with glow */
.cta-banner::after {
  content: '';
  position: absolute;
  top: 0;
  left: 10%;
  right: 10%;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    rgba(79, 172, 254, 0.4) 30%,
    rgba(79, 172, 254, 0.4) 70%,
    transparent
  );
  box-shadow: 0 0 20px rgba(79, 172, 254, 0.3);
}

.cta-banner > * { position: relative; z-index: 1; }

.cta-banner__label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-5);
  display: block;
}

.cta-banner__title {
  font-size: clamp(2rem, 4.5vw, 3.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: var(--space-6);
  max-width: 720px;
  margin-inline: auto;
}

.cta-banner__sub {
  color: var(--text-secondary);
  font-size: var(--text-lg);
  margin-bottom: var(--space-10);
}

.cta-banner__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ════════════════════════════════════════════════════════════
   FOOTER
   ════════════════════════════════════════════════════════════ */
.footer {
  padding-top: var(--space-16);
  padding-bottom: var(--space-10);
  position: relative;
  overflow: hidden;
}

/* Subtle top glow */
.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 1px;
  background: linear-gradient(
    to right,
    transparent,
    rgba(79, 172, 254, 0.3) 30%,
    rgba(79, 172, 254, 0.3) 70%,
    transparent
  );
  box-shadow: 0 0 16px rgba(79, 172, 254, 0.2);
}

.footer__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-8);
}

.footer__logo {
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--text-muted);
  max-width: 260px;
}

.footer__nav {
  display: flex;
  gap: var(--space-16);
}

.footer__nav-title {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.footer__nav-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__nav-link {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease);
}

.footer__nav-link:hover { color: var(--text-primary); }

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-6);
}

.footer__copy {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.footer__email {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease);
}

.footer__email:hover { color: var(--accent); text-shadow: var(--neon-sm); }

@media (max-width: 768px) {
  .footer__top { flex-direction: column; gap: var(--space-10); }
  .footer__nav  { gap: var(--space-10); }
  .footer__bottom { flex-direction: column; align-items: flex-start; gap: var(--space-3); }
}

/* ════════════════════════════════════════════════════════════
   TAG / BADGE
   ════════════════════════════════════════════════════════════ */
.tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 4px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--glass);
}

.tag--accent {
  border-color: rgba(79, 172, 254, 0.3);
  color: var(--accent);
  background: rgba(79, 172, 254, 0.06);
  box-shadow: 0 0 10px rgba(79, 172, 254, 0.1);
}

/* ════════════════════════════════════════════════════════════
   FILTER BAR
   ════════════════════════════════════════════════════════════ */
.filter-bar { display: flex; gap: var(--space-2); flex-wrap: wrap; }

.filter-btn {
  font-size: var(--text-sm);
  font-weight: 500;
  padding: 8px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  background: transparent;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
}

.filter-btn:hover { border-color: var(--border-hover); color: var(--text-primary); }

.filter-btn.is-active {
  background: rgba(79, 172, 254, 0.12);
  border-color: rgba(79, 172, 254, 0.4);
  color: var(--accent);
  box-shadow: 0 0 16px rgba(79, 172, 254, 0.15);
}

/* ════════════════════════════════════════════════════════════
   FORM
   ════════════════════════════════════════════════════════════ */
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }

.form-label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 13px 16px;
  background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.02) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: var(--text-sm);
  backdrop-filter: blur(8px);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition: border-color var(--duration-fast) var(--ease),
              box-shadow var(--duration-fast) var(--ease);
  -webkit-appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder { color: var(--text-muted); }

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: rgba(79, 172, 254, 0.5);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.06),
    0 0 0 3px rgba(79, 172, 254, 0.08),
    0 0 16px rgba(79, 172, 254, 0.1);
}

.form-textarea { resize: vertical; min-height: 120px; line-height: 1.65; }

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238b8ba8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  background-size: 10px;
  padding-right: 36px;
  cursor: pointer;
}