@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg:            #0a0e17;
  --bg-lift:       #0f1420;
  --surface:       rgba(255,255,255,0.035);
  --surface-hover: rgba(255,255,255,0.07);
  --border:        rgba(255,255,255,0.08);
  --border-hover:  rgba(255,255,255,0.18);

  --text:       #f5f5f7;
  --text-dim:   #a3a3ad;
  --text-mute:  #6b6b74;

  --accent:        #818cf8;
  --accent-strong: #6366f1;
  --accent-soft:   rgba(129,140,248,0.12);
  --accent-border: rgba(129,140,248,0.32);

  --warm:      #fb923c;
  --warm-soft: rgba(251,146,60,0.18);

  --success:      #4ade80;
  --success-soft: rgba(74,222,128,0.12);

  --r-sm: 10px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 28px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.35);
  --shadow-lg: 0 20px 60px rgba(0,0,0,0.5);
}

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

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.5;
  min-height: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  position: relative;
  overflow-x: hidden;
  min-height: 100vh;
}

.bg-gradient {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 90% 70% at 15% -10%, rgba(99,102,241,0.18), transparent 60%),
    radial-gradient(ellipse 70% 60% at 110% 110%, rgba(251,146,60,0.10), transparent 55%),
    radial-gradient(ellipse 50% 50% at 50% 50%, rgba(99,102,241,0.04), transparent 70%),
    linear-gradient(180deg, #0a0e17 0%, #07090f 100%);
}

h1, h2, h3 { font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(30px, 4vw, 44px); line-height: 1.08; }
h2 { font-size: 19px; font-weight: 600; letter-spacing: -0.015em; }
h3 { font-size: 16px; font-weight: 600; }

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(10,14,23,0.6);
  position: sticky;
  top: 0;
  z-index: 10;
}

.logo { display: flex; align-items: center; gap: 12px; }

.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
  display: grid;
  place-items: center;
  color: white;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: -0.03em;
  box-shadow: 0 4px 14px rgba(99,102,241,0.35), inset 0 1px 0 rgba(255,255,255,0.18);
}

.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-name { font-weight: 700; letter-spacing: -0.02em; font-size: 16px; color: var(--text); }
.logo-sub  { color: var(--text-mute); font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; }

.topbar-actions { display: flex; align-items: center; gap: 8px; }

.topbar-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--text-dim);
  font-size: 13px;
  padding: 8px 14px;
  border-radius: 9px;
  transition: all 0.15s;
  font-weight: 500;
}
.topbar-link:hover { color: var(--text); background: var(--surface-hover); }

.page {
  max-width: 1120px;
  margin: 0 auto;
  padding: 72px 32px 96px;
}

.hero { margin-bottom: 56px; max-width: 640px; }
.hero h1 { margin-bottom: 12px; }
.hero p  { color: var(--text-dim); font-size: 17px; line-height: 1.55; }

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 20px;
}

.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: transform 0.2s ease, border-color 0.2s, background 0.2s;
  position: relative;
  overflow: hidden;
  min-height: 220px;
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 120px;
  background: radial-gradient(ellipse 80% 100% at 50% 0%, rgba(129,140,248,0.08), transparent 70%);
  opacity: 0;
  transition: opacity 0.25s;
  pointer-events: none;
}

.tool-card:hover {
  border-color: var(--border-hover);
  background: var(--surface-hover);
  transform: translateY(-2px);
}
.tool-card:hover::before { opacity: 1; }

.tool-card.featured {
  background: linear-gradient(135deg, var(--accent-soft) 0%, var(--surface) 80%);
  border-color: var(--accent-border);
}

.tool-header {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.tool-icon {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--surface-hover);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  color: var(--accent);
  flex-shrink: 0;
}

.tool-card.featured .tool-icon {
  background: var(--accent-soft);
  border-color: var(--accent-border);
  color: var(--accent);
}

.tool-header h2 { flex: 1; min-width: 0; }

.tool-card p {
  color: var(--text-dim);
  font-size: 14px;
  line-height: 1.55;
  flex: 1;
}

.tag {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 600;
  padding: 4px 9px;
  border-radius: 999px;
  background: var(--warm-soft);
  color: var(--warm);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.tool-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 4px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.15s ease;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-strong);
  color: white;
  box-shadow: 0 1px 2px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.14);
}
.btn-primary:hover {
  background: var(--accent);
  box-shadow: 0 6px 20px rgba(99,102,241,0.45), inset 0 1px 0 rgba(255,255,255,0.18);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--surface-hover);
  color: var(--text);
  border-color: var(--border);
}
.btn-secondary:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--border-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-dim);
}
.btn-ghost:hover { color: var(--text); background: var(--surface-hover); }

.btn:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: 10px;
  display: inline-grid;
  place-items: center;
  background: var(--surface-hover);
  border: 1px solid var(--border);
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.15s;
  font-family: inherit;
}
.btn-icon:hover {
  color: var(--text);
  background: rgba(255,255,255,0.09);
  border-color: var(--border-hover);
}
.btn-icon.copied {
  color: var(--success);
  border-color: rgba(74,222,128,0.3);
  background: var(--success-soft);
}

.toast {
  position: fixed;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%) translateY(60px);
  padding: 11px 20px;
  background: rgba(15,20,32,0.96);
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--text);
  font-size: 13.5px;
  font-weight: 500;
  opacity: 0;
  transition: opacity 0.25s ease, transform 0.25s ease;
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  pointer-events: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.toast svg { color: var(--success); }

.placeholder {
  text-align: center;
  padding: 120px 24px;
  max-width: 520px;
  margin: 0 auto;
}
.placeholder .chip {
  display: inline-block;
  padding: 6px 14px;
  background: var(--warm-soft);
  color: var(--warm);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: 999px;
  margin-bottom: 22px;
}
.placeholder h1 { margin-bottom: 14px; }
.placeholder p  { color: var(--text-dim); font-size: 16px; margin-bottom: 28px; }

@media (max-width: 640px) {
  .topbar { padding: 14px 20px; }
  .page { padding: 48px 20px 64px; }
  .tool-card { padding: 24px; }
}