/* ============================================================
   CODICE SEGRETO — Layout Mastermind
   ============================================================ */

:root {
  --cs-bg-1: #0a0f0f;
  --cs-bg-2: #0f1f1f;
  --cs-bg-3: #061414;
  --cs-accent: #10b981;
  --cs-accent-2: #34d399;
  --cs-amber: #fbbf24;
  --cs-green: #4ade80;
  --cs-red: #ef4444;
  --cs-text: #ecfdf5;
  --cs-text-dim: rgba(236, 253, 245, 0.65);
  --cs-text-mute: rgba(236, 253, 245, 0.35);
  --cs-glass: rgba(255, 255, 255, 0.05);
  --cs-glass-border: rgba(255, 255, 255, 0.12);
  --cs-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  --cs-font: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --cs-mono: 'JetBrains Mono', monospace;
}

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

html, body {
  min-height: 100vh;
  font-family: var(--cs-font);
  color: var(--cs-text);
  background:
    radial-gradient(ellipse at 20% 10%, rgba(16, 185, 129, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 80%, rgba(52, 211, 153, 0.15) 0%, transparent 50%),
    linear-gradient(135deg, var(--cs-bg-1), var(--cs-bg-2) 50%, var(--cs-bg-3));
  background-attachment: fixed;
  overflow-x: hidden;
}

.cs-wrap { max-width: 720px; margin: 0 auto; padding: 1.5rem 1rem 4rem; }

.cs-header { text-align: center; margin-bottom: 1.8rem; animation: csFadeDown 0.7s ease-out; }
@keyframes csFadeDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

.cs-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #6ee7b7;
  margin-bottom: 1rem;
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
  font-family: var(--cs-mono);
}

.cs-header h1 {
  font-size: clamp(1.7rem, 5vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, #fff 0%, #6ee7b7 50%, #10b981 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.15;
}
.cs-header p { font-size: 1rem; color: var(--cs-text-dim); max-width: 500px; margin: 0 auto; }

.cs-setup {
  background: var(--cs-glass);
  border: 1px solid var(--cs-glass-border);
  border-radius: 20px;
  padding: 2rem;
  max-width: 520px;
  margin: 2rem auto;
  backdrop-filter: blur(15px);
  box-shadow: var(--cs-shadow);
  text-align: center;
  animation: csFadeDown 1s ease-out 0.1s both;
}
.cs-setup h2 {
  font-family: var(--cs-mono);
  font-size: 1.15rem;
  color: var(--cs-accent-2);
  margin-bottom: 1.2rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.cs-setup-info {
  background: rgba(16, 185, 129, 0.06);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--cs-text-dim);
  text-align: left;
}
.cs-setup-info strong { color: var(--cs-accent-2); font-family: var(--cs-mono); }

.cs-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.8rem;
  border-radius: 12px;
  border: 2px solid transparent;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  letter-spacing: 0.02em;
}
.cs-btn-main {
  background: linear-gradient(135deg, var(--cs-accent), var(--cs-accent-2));
  color: #0a0f0f;
  padding: 1rem 2rem;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.4);
  width: 100%;
}
.cs-btn-main:hover { transform: translateY(-2px); box-shadow: 0 12px 40px rgba(16, 185, 129, 0.6); }

.cs-game { animation: csFadeIn 0.5s ease-out; }
@keyframes csFadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.cs-status {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.cs-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #6ee7b7;
  font-family: var(--cs-mono);
}
.cs-status-info {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-family: var(--cs-mono);
  font-size: 0.85rem;
  color: var(--cs-text-dim);
}
.cs-status-info strong { color: var(--cs-accent-2); }

.cs-hint {
  text-align: center;
  padding: 0.8rem 1.2rem;
  background: rgba(251, 191, 36, 0.1);
  border: 2px dashed var(--cs-amber);
  border-radius: 12px;
  font-family: var(--cs-mono);
  font-size: 0.9rem;
  color: var(--cs-amber);
  margin-bottom: 1rem;
}

.cs-board {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 20px;
  padding: 1.2rem;
  margin-bottom: 1.3rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.cs-attempts {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.2rem;
  max-height: 300px;
  overflow-y: auto;
}

.cs-attempt {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 0.7rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 10px;
  font-family: var(--cs-mono);
}
.cs-attempt.is-last {
  background: rgba(16, 185, 129, 0.1);
  border-color: rgba(16, 185, 129, 0.3);
}

.cs-attempt-num {
  color: var(--cs-text-mute);
  font-size: 0.85rem;
}
.cs-attempt-digits {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.3em;
  color: #fff;
}
.cs-attempt-feedback {
  display: flex;
  gap: 0.5rem;
  font-size: 1rem;
  font-weight: 700;
}
.cs-feedback-dot {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
}
.cs-feedback-dot.exact { color: var(--cs-green); }
.cs-feedback-dot.partial { color: var(--cs-amber); }
.cs-feedback-dot.wrong { color: var(--cs-text-mute); }

.cs-input-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
}

.cs-input-digit {
  width: 60px;
  height: 70px;
  border-radius: 12px;
  border: 2px solid rgba(16, 185, 129, 0.3);
  background: rgba(255, 255, 255, 0.04);
  color: #fff;
  font-family: var(--cs-mono);
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  transition: all 0.2s ease;
  outline: none;
  padding: 0;
}
.cs-input-digit:focus {
  border-color: var(--cs-accent-2);
  box-shadow: 0 0 20px rgba(52, 211, 153, 0.4);
  background: rgba(16, 185, 129, 0.05);
}
.cs-input-digit::-webkit-outer-spin-button,
.cs-input-digit::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.cs-input-digit[type=number] { -moz-appearance: textfield; }

.cs-actions {
  text-align: center;
  margin-top: 1rem;
}
.cs-btn-submit {
  background: linear-gradient(135deg, var(--cs-accent), var(--cs-accent-2));
  color: #0a0f0f;
  padding: 0.9rem 2rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  box-shadow: 0 6px 25px rgba(16, 185, 129, 0.4);
}
.cs-btn-submit:hover { transform: translateY(-2px); box-shadow: 0 10px 35px rgba(16, 185, 129, 0.6); }
.cs-btn-submit:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

.cs-feedback {
  border-radius: 12px;
  padding: 1rem 1.2rem;
  margin-bottom: 1rem;
  font-size: 0.95rem;
  line-height: 1.55;
  display: none;
  text-align: center;
  animation: csSlideIn 0.4s ease-out;
}
@keyframes csSlideIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.cs-feedback.is-visible { display: block; }
.cs-feedback.is-correct {
  background: linear-gradient(135deg, rgba(74, 222, 128, 0.15), rgba(74, 222, 128, 0.05));
  border: 1px solid rgba(74, 222, 128, 0.4);
  border-left: 4px solid var(--cs-green);
  color: #b8f5c8;
}
.cs-feedback.is-wrong {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.15), rgba(239, 68, 68, 0.05));
  border: 1px solid rgba(239, 68, 68, 0.4);
  border-left: 4px solid var(--cs-red);
  color: #f5b8c8;
}
.cs-feedback.is-info {
  background: rgba(251, 191, 36, 0.1);
  border: 1px solid rgba(251, 191, 36, 0.3);
  border-left: 4px solid var(--cs-amber);
  color: #f5e6a8;
}
.cs-feedback strong {
  display: block;
  margin-bottom: 0.3rem;
  font-family: var(--cs-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 0.75rem;
}

.cs-next-wrap { text-align: center; margin-top: 0.5rem; }
.cs-next-wrap.hidden { display: none; }
.cs-btn-next {
  background: linear-gradient(135deg, var(--cs-accent), var(--cs-accent-2));
  color: #0a0f0f;
  padding: 0.9rem 2rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  box-shadow: 0 6px 25px rgba(16, 185, 129, 0.4);
}
.cs-btn-next:hover { transform: translateY(-2px); box-shadow: 0 10px 35px rgba(16, 185, 129, 0.6); }

.cs-final { animation: csFadeIn 0.6s ease-out; text-align: center; }
.cs-final-score-box {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(52, 211, 153, 0.08));
  border: 2px solid var(--cs-accent-2);
  border-radius: 20px;
  padding: 2.5rem 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: 0 0 60px rgba(16, 185, 129, 0.2);
  position: relative;
  overflow: hidden;
}
.cs-final-label {
  font-family: var(--cs-mono);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #6ee7b7;
  margin-bottom: 0.5rem;
}
.cs-final-score {
  font-family: var(--cs-mono);
  font-size: clamp(3.5rem, 12vw, 5.5rem);
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(135deg, var(--cs-accent-2), var(--cs-accent), #fff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 30px rgba(16, 185, 129, 0.5));
  margin-bottom: 0.5rem;
}
.cs-final-rating { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 0.3rem; }
.cs-final-sub { font-size: 0.85rem; color: var(--cs-text-dim); font-family: var(--cs-mono); }

.cs-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.7rem;
  margin-bottom: 1.8rem;
}
.cs-stat {
  background: var(--cs-glass);
  border: 1px solid var(--cs-glass-border);
  border-radius: 12px;
  padding: 1rem 0.6rem;
  text-align: center;
}
.cs-stat-value {
  font-family: var(--cs-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cs-accent-2);
  display: block;
  margin-bottom: 0.2rem;
}
.cs-stat-value.is-green { color: var(--cs-green); }
.cs-stat-value.is-red { color: var(--cs-red); }
.cs-stat-label {
  font-size: 0.7rem;
  color: var(--cs-text-mute);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--cs-mono);
}

@media (max-width: 640px) {
  .cs-wrap { padding: 1rem 0.8rem 3rem; }
  .cs-header h1 { font-size: 1.5rem; }
  .cs-setup { padding: 1.5rem 1.2rem; }
  .cs-input-digit { width: 46px; height: 56px; font-size: 1.5rem; }
  .cs-attempt-digits { font-size: 1.2rem; letter-spacing: 0.2em; }
  .cs-stats { grid-template-columns: 1fr 1fr; }
  .cs-stats .cs-stat:last-child { grid-column: 1 / -1; }
}