/*
  Millsta stylesheet map
  1. Reset, base tokens, and typography
  2. Shared animations and reveal states
  3. Layout sections: navbar, hero, services, about, portfolio, contact, footer
  4. Small interaction states for forms and buttons
*/
/* ─── RESET & BASE ─────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
}

:root {
  --dark: #0f172a;
  --dark2: #1e293b;
  --dark3: #0c1222;
  --slate9: #0f172a;
  --slate8: #1e293b;
  --slate7: #334155;
  --slate6: #475569;
  --slate5: #64748b;
  --slate4: #94a3b8;
  --slate3: #cbd5e1;
  --slate2: #e2e8f0;
  --accent: #38bdf8;
  --purple: #818cf8;
  --white: #f8fafc;
}

body {
  font-family: "Inter", sans-serif;
  background-color: var(--dark);
  color: var(--white);
  overflow-x: hidden;
}

/* scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--dark2);
}
::-webkit-scrollbar-thumb {
  background: var(--slate6);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}
img {
  max-width: 100%;
  display: block;
}

/* ─── ANIMATIONS ────────────────────────────────────────── */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes pulse-glow {
  0%,
  100% {
    transform: scale(1);
    opacity: 0.12;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.22;
  }
}
@keyframes float {
  0%,
  100% {
    transform: translateX(-50%) translateY(0);
  }
  50% {
    transform: translateX(-50%) translateY(10px);
  }
}
@keyframes blink {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.3;
  }
}
@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.fade-up {
  animation: fadeUp 0.8s ease both;
}
.delay-1 {
  animation-delay: 0.1s;
}
.delay-2 {
  animation-delay: 0.2s;
}
.delay-3 {
  animation-delay: 0.35s;
}
.delay-4 {
  animation-delay: 0.5s;
}

/* scroll-reveal */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

/* ─── NAVBAR ────────────────────────────────────────────── */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1.5rem 0;
  transition: background 0.3s, padding 0.3s, box-shadow 0.3s;
}
#navbar.scrolled {
  background: rgba(15, 23, 42, 0.92);
  backdrop-filter: blur(12px);
  padding: 0.9rem 0;
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.4);
}
#navbar .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: "Playfair Display", serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  text-decoration: none;
}
.nav-logo svg {
  color: var(--accent);
  fill: var(--accent);
}
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  color: var(--slate3);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--accent);
}
.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  color: #fff;
  padding: 0.25rem;
}
.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: var(--dark);
  border-top: 1px solid var(--dark2);
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
}
.mobile-menu.open {
  display: flex;
}
.mobile-menu a {
  color: var(--slate3);
  text-decoration: none;
  font-size: 1.1rem;
  font-weight: 600;
  transition: color 0.2s;
}
.mobile-menu a:hover {
  color: var(--accent);
}
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .hamburger {
    display: block;
  }
}

/* ─── HERO ──────────────────────────────────────────────── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background: #020a18;
  padding-top: 5rem;
  text-align: center;
}
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  pointer-events: none;
}
.hero-orb-1 {
  width: 700px;
  height: 700px;
  top: -180px;
  right: -180px;
  background: rgba(56, 189, 248, 0.09);
  animation: pulse-glow 10s ease-in-out infinite;
}
.hero-orb-2 {
  width: 500px;
  height: 500px;
  bottom: -80px;
  left: -80px;
  background: rgba(129, 140, 248, 0.08);
  animation: pulse-glow 14s ease-in-out infinite reverse;
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(
      to right,
      rgba(128, 128, 128, 0.06) 1px,
      transparent 1px
    ),
    linear-gradient(
      to bottom,
      rgba(128, 128, 128, 0.06) 1px,
      transparent 1px
    );
  background-size: 28px 28px;
}
.hero-content {
  position: relative;
  z-index: 2;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  background: rgba(30, 64, 175, 0.2);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: #93c5fd;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}
.hero-h1 {
  font-family: "Playfair Display", serif;
  font-size: clamp(2.8rem, 8vw, 6rem);
  font-weight: 700;
  line-height: 1.1;
  color: #fff;
  margin-bottom: 1.5rem;
}
.hero-h1 .gradient {
  background: linear-gradient(135deg, var(--accent), #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-sub {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.hero-tagline {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.hero-desc {
  color: var(--slate4);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 560px;
  margin: 0 auto 2.5rem;
}
.hero-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 9999px;
  background: var(--accent);
  color: var(--dark);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: background 0.2s, transform 0.2s;
}
.btn-primary:hover {
  background: #fff;
  transform: scale(1.04);
}
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  border-radius: 9999px;
  border: 1px solid var(--slate6);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: scale(1.04);
}
.scroll-hint {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--slate5);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: float 2s ease-in-out infinite;
}

/* ─── SECTION SHARED ────────────────────────────────────── */
section {
  padding: 6rem 0;
}
.section-label {
  display: block;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.section-title {
  font-family: "Playfair Display", serif;
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: #fff;
  line-height: 1.2;
}
.section-divider {
  width: 64px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
  margin: 1rem 0 1.5rem;
}
.section-desc {
  color: var(--slate4);
  font-size: 1rem;
  line-height: 1.7;
}

/* ─── SERVICES ──────────────────────────────────────────── */
#services {
  background: #0d1526;
  position: relative;
  overflow: hidden;
}
.services-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}
.services-header .section-divider {
  margin: 1rem auto 1.5rem;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.75rem;
}
.service-card {
  background: rgba(30, 41, 59, 0.5);
  border: 1px solid var(--slate7);
  border-radius: 1.25rem;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
  cursor: default;
}
.service-card:hover {
  border-color: rgba(56, 189, 248, 0.35);
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.35);
}
.card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
}
.card-icon {
  padding: 0.9rem;
  border-radius: 0.75rem;
  background: var(--dark);
  color: var(--accent);
  transition: background 0.25s, color 0.25s;
}
.service-card:hover .card-icon {
  background: var(--accent);
  color: var(--dark);
}
.card-num {
  font-family: "Playfair Display", serif;
  font-size: 3rem;
  font-weight: 700;
  color: var(--dark2);
  line-height: 1;
  transition: color 0.25s;
  user-select: none;
}
.service-card:hover .card-num {
  color: var(--slate7);
}
.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.75rem;
  transition: color 0.25s;
}
.service-card:hover .card-title {
  color: var(--accent);
}
.card-desc {
  color: var(--slate4);
  font-size: 0.9rem;
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1.25rem;
}
.card-features {
  list-style: none;
  border-top: 1px solid rgba(51, 65, 85, 0.5);
  padding-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.card-features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: var(--slate5);
  transition: color 0.25s;
}
.service-card:hover .card-features li {
  color: var(--slate3);
}
.card-features li svg {
  color: var(--accent);
  flex-shrink: 0;
}

/* ─── ABOUT ─────────────────────────────────────────────── */
#about {
  background: var(--dark3);
  position: relative;
  overflow: hidden;
}
.about-header {
  text-align: center;
  margin-bottom: 4rem;
}
.about-header .section-title span {
  color: var(--purple);
}
.timeline {
  position: relative;
  border-left: 2px solid var(--dark2);
  margin-left: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}
@media (min-width: 640px) {
  .timeline {
    margin-left: 2rem;
  }
}
.tl-item {
  position: relative;
  padding-left: 3rem;
}
@media (min-width: 640px) {
  .tl-item {
    padding-left: 3.5rem;
  }
}
.tl-icon {
  position: absolute;
  left: 0;
  top: 0;
  padding: 0.65rem;
  background: var(--dark);
  border: 1px solid var(--slate7);
  border-radius: 9999px;
  transform: translateX(-50%);
}
.tl-icon.red {
  color: #f87171;
}
.tl-icon.blue {
  color: var(--accent);
}
.tl-icon.yellow {
  color: #fbbf24;
}
.tl-icon.green {
  color: #4ade80;
}
.tl-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
}
.tl-quote {
  color: var(--slate4);
  font-size: 1rem;
  font-style: italic;
  line-height: 1.65;
  margin-bottom: 0.75rem;
  border-left: 3px solid rgba(248, 113, 113, 0.3);
  padding-left: 1rem;
}
.tl-text {
  color: var(--slate4);
  font-size: 0.95rem;
  line-height: 1.7;
}
.tl-text + .tl-text {
  margin-top: 0.75rem;
}
.tl-highlight {
  color: #fff;
  font-weight: 600;
}
.about-quote-box {
  margin-top: 4rem;
  background: var(--dark2);
  border: 1px solid var(--slate7);
  border-radius: 1.5rem;
  padding: 3rem 2rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.about-quote-box .big-quote {
  position: absolute;
  top: 1rem;
  left: 1.5rem;
  font-family: "Playfair Display", serif;
  font-size: 8rem;
  line-height: 1;
  color: var(--dark3);
  user-select: none;
}
.about-quote-box h3 {
  font-family: "Playfair Display", serif;
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: #fff;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}
.about-quote-box .attribution {
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  position: relative;
  z-index: 1;
}

/* ─── PORTFOLIO ─────────────────────────────────────────── */
#portfolio {
  background: var(--dark);
}
.portfolio-header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2.5rem;
}
@media (min-width: 768px) {
  .portfolio-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}
.filter-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.filter-btn {
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: background 0.2s, color 0.2s;
  background: var(--dark2);
  color: var(--slate3);
}
.filter-btn.active {
  background: var(--accent);
  color: var(--dark);
}
.filter-btn:hover:not(.active) {
  background: var(--slate7);
}
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
.portfolio-item {
  position: relative;
  border-radius: 1rem;
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  transition: opacity 0.3s, transform 0.3s;
}
.portfolio-item.hidden {
  display: none;
}
.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.portfolio-item:hover img {
  transform: scale(1.08);
}
.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(15, 23, 42, 0.9) 0%,
    rgba(15, 23, 42, 0.15) 60%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity 0.3s;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
}
.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}
.portfolio-cat {
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
  transform: translateY(8px);
  transition: transform 0.4s 0.05s;
}
.portfolio-title {
  font-family: "Playfair Display", serif;
  font-size: 1.2rem;
  color: #fff;
  font-weight: 700;
  transform: translateY(8px);
  transition: transform 0.4s;
}
.portfolio-item:hover .portfolio-cat,
.portfolio-item:hover .portfolio-title {
  transform: translateY(0);
}

/* ─── CONTACT ────────────────────────────────────────────── */
#contact {
  background: var(--dark3);
}
.contact-grid {
  display: grid;
  gap: 3rem;
}
@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.contact-info-title {
  font-family: "Playfair Display", serif;
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: #fff;
  margin-bottom: 1rem;
}
.contact-info-desc {
  color: var(--slate4);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}
.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
}
.contact-icon {
  padding: 0.75rem;
  background: var(--dark2);
  border-radius: 0.5rem;
  color: var(--accent);
  flex-shrink: 0;
}
.contact-detail h4 {
  color: #fff;
  font-weight: 700;
  margin-bottom: 0.2rem;
}
.contact-detail p {
  color: var(--slate5);
  font-size: 0.9rem;
}
.social-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 2.5rem;
}
.social-btn {
  padding: 0.75rem;
  background: var(--dark2);
  border-radius: 9999px;
  color: var(--slate4);
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}
.social-btn:hover {
  background: var(--accent);
  color: var(--dark);
}
.contact-form {
  background: var(--dark2);
  border: 1px solid var(--slate7);
  border-radius: 1.5rem;
  padding: 2rem;
}
.form-row {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr 1fr;
}
@media (max-width: 480px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}
.form-group label {
  font-size: 0.82rem;
  color: var(--slate4);
}
.form-group input,
.form-group textarea {
  background: var(--dark3);
  border: 1px solid var(--slate7);
  border-radius: 0.75rem;
  padding: 0.75rem 1rem;
  color: #fff;
  font-family: "Inter", sans-serif;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
}
.form-group textarea {
  resize: vertical;
  min-height: 110px;
}
.btn-submit {
  width: 100%;
  padding: 1rem;
  background: var(--accent);
  color: var(--dark);
  font-weight: 700;
  font-size: 1rem;
  border: none;
  border-radius: 0.75rem;
  cursor: pointer;
  transition: background 0.2s;
}
.btn-submit:hover {
  background: #fff;
}
.btn-submit:disabled {
  cursor: not-allowed;
  opacity: 0.7;
}
.form-status {
  margin-top: 1rem;
  min-height: 1.25rem;
  color: var(--slate4);
  font-size: 0.9rem;
  line-height: 1.4;
}
.form-status.success {
  color: #4ade80;
}
.form-status.error {
  color: #f87171;
}

/* ─── FOOTER ─────────────────────────────────────────────── */
footer {
  background: var(--dark);
  border-top: 1px solid var(--dark2);
  padding: 2rem 0;
  text-align: center;
}
footer p {
  color: var(--slate5);
  font-size: 0.9rem;
}
footer .pipe {
  color: var(--slate6);
  margin: 0 0.5rem;
}
footer .small {
  font-size: 0.75rem;
  color: var(--slate6);
}

svg {
  display: inline-block;
  vertical-align: middle;
}