:root[data-theme="dark"] {
  --bg-color: #07050d;
  --card-bg: rgba(26, 24, 38, 0.92);
  --border-color: rgba(255,255,255,0.05);
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --input-bg: #0c0a15;
  --input-border: rgba(255,255,255,0.1);
  --input-focus: #6D4AFF;
  --btn-bg: #6D4AFF;
  --btn-secondary: rgba(255,255,255,0.1);
  --btn-text: #ffffff;
  --btn-hover: #5835E5;
  --btn-secondary-hover: rgba(255,255,255,0.15);
  --glow-1: rgba(109, 74, 255, 0.12);
  --dropdown-bg: #211f30;
  --dropdown-hover: rgba(255,255,255,0.05);
  --info-bg: rgba(255,255,255,0.02);
  --success-bg: rgba(16,185,129,0.08);
  --warn-bg: rgba(245,158,11,0.08);
}
:root[data-theme="light"] {
  --bg-color: #f4f5f7;
  --card-bg: rgba(255, 255, 255, 0.85);
  --border-color: rgba(0,0,0,0.08);
  --text-main: #111827;
  --text-muted: #4b5563;
  --input-bg: #ffffff;
  --input-border: rgba(0,0,0,0.2);
  --input-focus: #6D4AFF;
  --btn-bg: #6D4AFF;
  --btn-secondary: rgba(0,0,0,0.08);
  --btn-text: #ffffff;
  --btn-hover: #5835E5;
  --btn-secondary-hover: rgba(0,0,0,0.12);
  --glow-1: rgba(109, 74, 255, 0.08);
  --dropdown-bg: #ffffff;
  --dropdown-hover: rgba(0,0,0,0.04);
  --info-bg: rgba(0,0,0,0.02);
  --success-bg: rgba(16,185,129,0.08);
  --warn-bg: rgba(245,158,11,0.08);
}

html { height: 100%; overflow: hidden; }
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  height: 100%; display: flex; flex-direction: column;
  transition: background-color 0.3s, color 0.3s;
  position: relative; overflow: hidden;
}

body::before {
  content: ''; position: absolute; top: -20%; left: 50%;
  transform: translateX(-50%); width: 150vw; height: 150vw;
  border-radius: 50%; z-index: -1; filter: blur(140px);
  pointer-events: none; transition: background 0.5s;
  background: radial-gradient(circle, var(--glow-1) 0%, transparent 70%);
}

.app-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px 32px; width: 100%;
}
.header-logo { display: flex; align-items: center; gap: 12px; }
.logo-icon { width: 32px; height: 32px; background: var(--btn-bg); border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 16px; color: white; }
.logo-text { font-size: 18px; font-weight: 700; letter-spacing: -0.3px; }

.theme-switcher { position: relative; }
.theme-btn {
  background: transparent; border: 1px solid var(--border-color); color: var(--text-muted);
  border-radius: 20px; padding: 6px 14px; font-size: 13px; font-weight: 500;
  cursor: pointer; display: flex; align-items: center; gap: 6px; transition: all 0.2s;
}
.theme-btn:hover { background: var(--dropdown-hover); color: var(--text-main); }
.theme-dropdown {
  position: absolute; top: 110%; right: 0; background: var(--dropdown-bg);
  border: 1px solid var(--border-color); border-radius: 12px; width: 180px;
  padding: 8px; box-shadow: 0 10px 25px rgba(0,0,0,0.2); opacity: 0; visibility: hidden;
  transform: translateY(-10px); transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1); z-index: 100;
}
.theme-dropdown.show { opacity: 1; visibility: visible; transform: translateY(0); }
.theme-option {
  display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 12px;
  border: none; background: transparent; color: var(--text-main); text-align: left;
  border-radius: 8px; cursor: pointer; font-size: 13px; font-weight: 500;
}
.theme-option:hover { background: var(--dropdown-hover); }
.theme-option.active { color: var(--btn-bg); }
.theme-option svg { width: 16px; height: 16px; }

.main-wrapper {
  flex: 1; display: flex; align-items: center; justify-content: center;
  padding: 12px 20px; overflow: hidden;
}

.card {
  background: var(--card-bg); border: 1px solid var(--border-color);
  border-radius: 24px; padding: 40px; width: 100%; max-width: 460px;
  max-height: calc(100vh - 100px); overflow-y: auto; overflow-x: hidden;
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.25); backdrop-filter: blur(20px);
  transition: background 0.3s, border-color 0.3s; scrollbar-width: none;
}
.card::-webkit-scrollbar { display: none; }

.card-title { font-size: 24px; font-weight: 700; margin-bottom: 8px; }
.card-subtitle { color: var(--text-muted); font-size: 14px; margin-bottom: 32px; line-height: 1.5; }

.form-group { margin-bottom: 24px; }
label { display: block; font-size: 13px; font-weight: 600; color: var(--text-main); margin-bottom: 8px; }
input {
  width: 100%; background: var(--input-bg); border: 1px solid var(--input-border);
  color: var(--text-main); border-radius: 12px; padding: 14px 16px; font-size: 15px;
  font-family: 'Menlo', monospace; letter-spacing: 1px; transition: all 0.2s; outline: none;
}
input:focus { border-color: var(--input-focus); box-shadow: 0 0 0 1px var(--input-focus); }
input::placeholder { color: var(--text-muted); letter-spacing: 0; opacity: 0.6; }

.btn {
  width: 100%; background: var(--btn-bg); color: var(--btn-text);
  border: none; border-radius: 12px; padding: 14px 16px; font-size: 15px;
  font-weight: 600; cursor: pointer; transition: all 0.2s; display: flex;
  align-items: center; justify-content: center; gap: 8px; margin-bottom: 12px;
}
.btn:hover { background: var(--btn-hover); }
.btn.btn-secondary { background: var(--btn-secondary); color: var(--text-main); }
.btn.btn-secondary:hover { background: var(--btn-secondary-hover); }
.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.spinner {
  width: 18px; height: 18px; border: 2px solid rgba(255,255,255,0.3);
  border-top-color: currentColor; border-radius: 50%; animation: spin 0.6s linear infinite; display: none;
}
@keyframes spin { 100% { transform: rotate(360deg); } }
.loading .spinner { display: block; }
.loading .btn-label { display: none; }

.status {
  margin-top: 16px; font-size: 13px; line-height: 1.5; padding: 12px 16px;
  border-radius: 10px; display: none; margin-bottom: 24px;
}
.status.error { display: block; background: rgba(239,68,68,0.1); color: #ef4444; border: 1px solid rgba(239,68,68,0.2); }
.status.warn  { display: block; background: var(--warn-bg); color: #f59e0b; border: 1px solid rgba(245,158,11,0.2); }
.status.success { display: block; background: var(--success-bg); color: #10b981; border: 1px solid rgba(16,185,129,0.2); }

.box {
  margin-top: 24px; padding: 20px; background: var(--info-bg);
  border: 1px solid var(--border-color); border-radius: 12px; display: none;
}
.box-title {
  font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px;
  color: var(--text-muted); margin-bottom: 12px; display: flex; align-items: center; gap: 6px;
}
.steps { list-style: none; display: flex; flex-direction: column; gap: 12px; }
.steps li { display: flex; align-items: flex-start; gap: 12px; font-size: 13px; color: var(--text-muted); line-height: 1.5; }
.step-num {
  width: 20px; height: 20px; border-radius: 50%; background: rgba(109,74,255,0.1);
  color: var(--btn-bg); font-size: 11px; font-weight: 700; display: flex;
  align-items: center; justify-content: center; flex-shrink: 0;
}
.steps strong { color: var(--text-main); font-weight: 600; }

.badge-success {
  background: var(--success-bg); color: #10b981; padding: 12px 16px;
  border-radius: 12px; font-size: 13px; font-weight: 500; display: flex;
  align-items: center; gap: 8px; border: 1px solid rgba(16,185,129,0.2);
}

hr { border: 0; height: 1px; background: var(--border-color); margin: 20px 0; }

/* Layout States */
#downloadPhase { display: none; }

/* Inline style replacements */
.granted-box { display: block; margin-top: 0; margin-bottom: 24px; padding: 16px; }
.label-xs { font-size: 12px; color: var(--text-muted); margin-bottom: 4px; }
#grantedKeyDisplay { font-family: Menlo, monospace; font-size: 14px; font-weight: 600; color: var(--btn-bg); }
.step-desc { font-size: 13px; color: var(--text-muted); margin-bottom: 12px; }
.spacer-16 { height: 16px; }
.note-xs { font-size: 12px; color: var(--text-muted); margin-top: 8px; }