/* ===== Variables ===== */
:root {
  --bg: #000000;
  --bg-card: #111111;
  --bg-input: #1a1a1a;
  --text: #ffffff;
  --text-secondary: #aaaaaa;
  --accent: #7b2ff7;
  --accent-hover: #9b5ff9;
  --error: #ff4444;
  --success: #00cc88;
  --warning: #f59e0b;
  --border: #333333;
  --radius: 12px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 18px; }
body { font-family: 'League Spartan', sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
.app { max-width: 560px; margin: 0 auto; padding: 48px 24px; min-height: 100vh; display: flex; flex-direction: column; }

/* ===== Header ===== */
.header { text-align: center; margin-bottom: 40px; }
.logo { font-size: 2.4rem; font-weight: 700; letter-spacing: -1px; }
.accent { color: var(--accent); }
.subtitle { font-size: 0.9rem; color: var(--text-secondary); font-weight: 300; margin-top: 6px; text-transform: uppercase; letter-spacing: 3px; }

/* ===== Form ===== */
.form-card { background: var(--bg-card); border-radius: var(--radius); padding: 32px; border: 1px solid var(--border); }
.form-card h2 { font-size: 1.4rem; font-weight: 600; margin-bottom: 6px; }
.form-description { color: var(--text-secondary); font-size: 0.85rem; margin-bottom: 28px; line-height: 1.5; }

.form-group { margin-bottom: 24px; }
.form-group label { display: block; font-size: 0.8rem; font-weight: 500; margin-bottom: 8px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 1px; }
.form-group input { width: 100%; padding: 14px 16px; background: var(--bg-input); border: 2px solid var(--border); border-radius: var(--radius); color: var(--text); font-family: 'League Spartan', sans-serif; font-size: 1rem; transition: border-color 0.3s ease; outline: none; }
.form-group input::placeholder { color: #555; }
.form-group input:focus { border-color: var(--accent); }
.form-group input.invalid { border-color: var(--error); }
.error-message { display: block; font-size: 0.78rem; color: var(--error); margin-top: 6px; min-height: 1.2em; }

/* ===== Model Selector ===== */
.model-selector { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.model-chip { padding: 16px; border: 2px solid var(--border); border-radius: var(--radius); background: var(--bg-input); color: var(--text-secondary); font-family: 'League Spartan', sans-serif; font-size: 0.9rem; font-weight: 500; cursor: pointer; transition: all 0.3s ease; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.model-chip:hover { border-color: var(--accent); color: var(--text); }
.model-chip.selected { border-color: var(--accent); background: rgba(123, 47, 247, 0.1); color: var(--text); }
.model-chip .model-icon { font-size: 1.6rem; }
.model-chip .model-name { font-weight: 600; }

/* ===== Submit Button ===== */
.btn-submit { width: 100%; padding: 16px; background: linear-gradient(135deg, var(--accent), #e91e8c); border: none; border-radius: var(--radius); color: #fff; font-family: 'League Spartan', sans-serif; font-size: 1.05rem; font-weight: 600; cursor: pointer; transition: all 0.3s ease; margin-top: 8px; letter-spacing: 0.5px; }
.btn-submit:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(123, 47, 247, 0.3); }
.btn-submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }

/* ===== Results ===== */
.result { display: none; animation: fadeIn 0.4s ease; }
.result.visible { display: block; }
.result-card { padding: 28px; border-radius: var(--radius); text-align: center; }
.result-card.success { background: rgba(0, 204, 136, 0.08); border: 1px solid rgba(0, 204, 136, 0.3); }
.result-card.error { background: rgba(255, 68, 68, 0.08); border: 1px solid rgba(255, 68, 68, 0.3); }
.result-card.warning { background: rgba(245, 158, 11, 0.08); border: 1px solid rgba(245, 158, 11, 0.3); }
.result-icon { font-size: 3rem; margin-bottom: 12px; }
.result-title { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; }
.result-message { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; }
.btn-back { display: inline-block; margin-top: 20px; padding: 10px 24px; background: transparent; border: 2px solid var(--border); border-radius: var(--radius); color: var(--text-secondary); font-family: 'League Spartan', sans-serif; font-size: 0.9rem; cursor: pointer; transition: all 0.3s ease; }
.btn-back:hover { border-color: var(--accent); color: var(--text); }

/* ===== Loading ===== */
.loading { display: none; text-align: center; padding: 40px; }
.loading.visible { display: block; }
.spinner { display: inline-block; width: 40px; height: 40px; border: 3px solid var(--border); border-top-color: var(--accent); border-radius: 50%; animation: spin 0.6s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text { color: var(--text-secondary); font-size: 0.9rem; margin-top: 16px; }

/* ===== Animations ===== */
@keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

/* ===== Honeypot ===== */
.honey { position: absolute; left: -9999px; opacity: 0; height: 0; width: 0; overflow: hidden; }

/* ===== Responsive ===== */
@media (max-width: 480px) {
  html { font-size: 16px; }
  .app { padding: 24px 16px; }
  .form-card { padding: 24px 20px; }
  .model-selector { grid-template-columns: 1fr 1fr; gap: 8px; }
  .model-chip { padding: 12px; }
}