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

:root {
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 260ms;

  /* ─── Dark (Default: Purple → Wine) ─── */
  --bg-from: #3a0f3c;
  --bg-to:   #7b1535;
  --fg: #ffffff;
  --fg-secondary: rgba(255, 255, 255, 0.55);

  --card-bg:     rgba(255, 255, 255, 0.10);
  --card-border: rgba(255, 255, 255, 0.12);
  --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  --card-hover-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
  --card-hover-bg: rgba(255, 255, 255, 0.15);

  --accent:     #ffffff;
  --accent-btn: rgba(255, 255, 255, 0.18);
  --error:      #FF6B7A;
}

[data-theme='light'] {
  /* ─── Light: Lavender → Pink ─── */
  --bg-from: #e8d5f5;
  --bg-to:   #f5c2d0;
  --fg: #1c1c2e;
  --fg-secondary: rgba(28, 28, 46, 0.55);

  --card-bg:     rgba(255, 255, 255, 0.45);
  --card-border: rgba(255, 255, 255, 0.8);
  --card-shadow: 0 4px 24px rgba(100, 30, 60, 0.10);
  --card-hover-shadow: 0 12px 40px rgba(100, 30, 60, 0.18);
  --card-hover-bg: rgba(255, 255, 255, 0.65);

  --accent:     #1c1c2e;
  --accent-btn: rgba(28, 28, 46, 0.12);
  --error:      #e0334e;
}

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

html, body {
  height: 100%;
}

body {
  min-height: 100vh;
  font-family: var(--font);
  color: var(--fg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  background: linear-gradient(145deg, var(--bg-from) 0%, var(--bg-to) 100%);
  background-attachment: fixed;
  transition: background var(--duration) var(--ease), color var(--duration) var(--ease);
}

a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; outline: none; font-family: var(--font); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.2);
  border-radius: 10px;
}

/* ── Input ── */
input[type="text"],
input[type="password"],
input[type="url"],
input[type="email"] {
  width: 100%;
  padding: 0.85rem 1rem;
  background: var(--card-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--card-border);
  border-radius: 12px;
  color: var(--fg);
  font-family: var(--font);
  font-size: 0.95rem;
  outline: none;
  transition: all var(--duration) var(--ease);
}

input:focus {
  border-color: rgba(255,255,255,0.5);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.10);
}

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

/* ── Glass card ── */
.glass-card {
  background: var(--card-bg);
  backdrop-filter: blur(24px) saturate(1.4);
  -webkit-backdrop-filter: blur(24px) saturate(1.4);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  border-radius: 20px;
  transition: all var(--duration) var(--ease);
}

/* ── Btn primary ── */
.btn-primary {
  background: rgba(255,255,255,0.18);
  color: var(--fg);
  border: 1px solid rgba(255,255,255,0.25);
  padding: 0.75rem 1.4rem;
  border-radius: 50px;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  backdrop-filter: blur(12px);
  transition: all var(--duration) var(--ease);
}

.btn-primary:hover {
  background: rgba(255,255,255,0.28);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

.btn-primary:disabled {
  opacity: 0.5;
  pointer-events: none;
}