@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;0,9..40,800;1,9..40,300&display=swap');

/* ── Variables ──────────────────────────── */
:root {
  color-scheme: dark;
  --color-bg:        #0a0a0f;
  --color-bg-2:      #111118;
  --color-bg-card:   #13131c;
  --color-border:    rgba(255,255,255,0.07);
  --color-accent:    #3b82f6;
  --color-accent-2:  #60a5fa;
  --color-accent-glow: rgba(59,130,246,0.25);
  --color-text:      #f0f0f5;
  --color-muted:     #8888a0;
  --font-main:       'DM Sans', sans-serif;
  --radius:          12px;
  --radius-lg:       20px;
  --transition:      0.3s ease;
  --max-width:       1180px;
}

/* ── Reset ──────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--color-accent) var(--color-bg-2);
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg-2); }
::-webkit-scrollbar-thumb { background: var(--color-accent); border-radius: 3px; }

::selection {
  background: var(--color-accent);
  color: #fff;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: var(--font-main); }

/* ── Utility ────────────────────────────── */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--color-text);
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-muted);
  max-width: 520px;
  line-height: 1.7;
}

/* ── Scroll Reveal ──────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ── Buttons ────────────────────────────── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--color-accent) 0%, #6366f1 100%);
  color: #fff;
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 4px 18px rgba(59, 130, 246, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.15);
  transition: transform 0.25s ease, box-shadow 0.25s ease, filter 0.25s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(59, 130, 246, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.2);
  filter: brightness(1.1);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 10px rgba(59, 130, 246, 0.3);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-text);
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 10px;
  border: 1.5px solid rgba(255, 255, 255, 0.13);
  transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease,
              transform 0.25s ease, box-shadow 0.25s ease;
}

.btn-outline:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: rgba(59, 130, 246, 0.45);
  color: var(--color-accent-2);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(59, 130, 246, 0.15);
}

.btn-outline:active {
  transform: translateY(0);
  box-shadow: none;
}

/* ── Loading Screen ─────────────────────── */
#loading-screen {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.loader-logo {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--color-text);
}

.loader-logo span { color: var(--color-accent); }

.loader-bar {
  width: 160px;
  height: 2px;
  background: var(--color-border);
  border-radius: 2px;
  overflow: hidden;
}

.loader-bar-fill {
  height: 100%;
  background: var(--color-accent);
  border-radius: 2px;
  animation: loaderFill 0.9s ease forwards;
}

@keyframes loaderFill {
  from { width: 0; }
  to   { width: 100%; }
}

/* ── Responsive ─────────────────────────── */
@media (max-width: 768px) {
  .container { padding: 0 20px; }
}