@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 280ms;

  /* Light */
  --bg-base: #f2f2f7;
  --fg: #1c1c1e;
  --fg-secondary: #6c6c70;
  --glass-bg: rgba(255, 255, 255, 0.62);
  --glass-border: rgba(255, 255, 255, 0.8);
  --glass-shadow: 0 8px 40px rgba(0, 0, 0, 0.08), 0 1px 0 rgba(255,255,255,0.9) inset;
  --glass-hover-shadow: 0 20px 60px rgba(0, 0, 0, 0.12), 0 1px 0 rgba(255,255,255,0.9) inset;
  --accent: #007AFF;
  --accent-glow: rgba(0, 122, 255, 0.25);
  --error: #FF3B30;
  --success: #34C759;

  --orb-1: radial-gradient(ellipse at 20% 20%, rgba(0, 122, 255, 0.15) 0%, transparent 60%);
  --orb-2: radial-gradient(ellipse at 80% 80%, rgba(88, 86, 214, 0.12) 0%, transparent 60%);
  --orb-3: radial-gradient(ellipse at 60% 10%, rgba(52, 199, 89, 0.08) 0%, transparent 50%);
}

[data-theme='dark'] {
  --bg-base: #000000;
  --fg: #f5f5f7;
  --fg-secondary: #8e8e93;
  --glass-bg: rgba(28, 28, 30, 0.72);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 40px rgba(0, 0, 0, 0.4), 0 1px 0 rgba(255,255,255,0.05) inset;
  --glass-hover-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0, 122, 255, 0.3);
  --accent: #0A84FF;
  --accent-glow: rgba(10, 132, 255, 0.35);
  --error: #FF453A;
  --success: #30D158;

  --orb-1: radial-gradient(ellipse at 20% 20%, rgba(10, 132, 255, 0.18) 0%, transparent 60%);
  --orb-2: radial-gradient(ellipse at 80% 80%, rgba(94, 92, 230, 0.18) 0%, transparent 60%);
  --orb-3: radial-gradient(ellipse at 60% 10%, rgba(48, 209, 88, 0.08) 0%, transparent 50%);
}

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

html {
  height: 100%;
}

body {
  min-height: 100vh;
  background-color: var(--bg-base);
  color: var(--fg);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--duration) var(--ease), color var(--duration) var(--ease);
}

/* Ambient background orbs */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: var(--orb-1), var(--orb-2), var(--orb-3);
  pointer-events: none;
  z-index: 0;
}

#__next, main {
  position: relative;
  z-index: 1;
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(128, 128, 128, 0.25);
  border-radius: 10px;
  border: 2px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover { background: rgba(128, 128, 128, 0.4); background-clip: padding-box; }

/* Glass utility */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(24px) saturate(1.8);
  -webkit-backdrop-filter: blur(24px) saturate(1.8);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 20px;
}

/* Page layout */
.page-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem;
  min-height: 100vh;
}

/* Forms */
input[type="text"],
input[type="password"],
input[type="url"],
input[type="email"] {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  color: var(--fg);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: all var(--duration) var(--ease);
  backdrop-filter: blur(12px);
  outline: none;
}

input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

input::placeholder {
  color: var(--fg-secondary);
}

button {
  cursor: pointer;
  border: none;
  outline: none;
  font-family: var(--font);
  transition: all var(--duration) var(--ease);
}

a {
  text-decoration: none;
  color: inherit;
}

/* Btn primary */
.btn-primary {
  background: var(--accent);
  color: white;
  padding: 0.85rem 1.5rem;
  border-radius: 12px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px var(--accent-glow);
}

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

.btn-primary:disabled {
  opacity: 0.6;
  pointer-events: none;
}