/* ============================================================
   FlickerPic — Global Styles
   ============================================================ */

:root {
  --color-bg: #0f0f13;
  --color-surface: #1a1a24;
  --color-surface-hover: #24243a;
  --color-primary: #7c5cfc;
  --color-primary-hover: #6a48e6;
  --color-text: #e8e6f0;
  --color-text-muted: #8b89a0;
  --color-border: #2a2a3d;
  --color-success: #34d399;
  --color-error: #f87171;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition: 0.2s ease;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.6;
}

/* ---- Typography ---- */
h1, h2, h3 {
  line-height: 1.2;
  font-weight: 700;
}

.logo {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--color-primary), #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

.btn:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

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

.btn--outline {
  background: transparent;
  border: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ---- Header ---- */
.site-header {
  width: 100%;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---- Card ---- */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

/* ---- Loading Spinner ---- */
.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* ---- Fade-in animation ---- */
.fade-in {
  animation: fadeIn 0.5s ease forwards;
  opacity: 0;
}

@keyframes fadeIn {
  to { opacity: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    animation: none;
    opacity: 1;
  }
}

/* ---- Footer ---- */
.site-footer {
  margin-top: auto;
  padding: 1.5rem;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* ---- Utilities ---- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-2 { margin-bottom: 1rem; }
.gap-1 { gap: 0.5rem; }

/* ---- Responsive ---- */
@media (max-width: 600px) {
  .logo { font-size: 1.6rem; }
  .btn { padding: 0.65rem 1.25rem; font-size: 0.95rem; }
}