/* ===== Variables ===== */
:root {
  --bg: #000000;
  --bg-card: #111111;
  --bg-input: #1a1a1a;
  --text: #ffffff;
  --text-secondary: #aaaaaa;
  --accent: #ff2d78;
  --accent-hover: #ff4d8f;
  --error: #ff4444;
  --success: #00cc88;
  --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;
  -webkit-tap-highlight-color: transparent;
}

/* ===== App Container ===== */
.app {
  max-width: 600px;
  margin: 0 auto;
  padding: 40px 24px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ===== Header ===== */
.header {
  text-align: center;
  margin-bottom: 32px;
}

.logo {
  font-size: 2.4rem;
  font-weight: 700;
  letter-spacing: -1px;
}

.accent {
  color: var(--accent);
}

.subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  font-weight: 300;
  margin-top: 4px;
  text-transform: uppercase;
  letter-spacing: 3px;
}

/* ===== Progress Bar ===== */
.progress-bar {
  margin-bottom: 40px;
}

.progress-track {
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 16px;
}

.progress-fill {
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  transition: width 0.4s ease;
  width: 25%;
}

.progress-steps {
  display: flex;
  justify-content: space-between;
}

.step {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all 0.3s ease;
}

.step.active {
  border-color: var(--accent);
  color: var(--accent);
}

.step.completed {
  border-color: var(--success);
  background: var(--success);
  color: var(--bg);
}

/* ===== Form Steps ===== */
.form-step {
  display: none;
  animation: fadeIn 0.4s ease;
}

.form-step.active {
  display: block;
}

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

.form-step h2 {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-description {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 28px;
  line-height: 1.5;
}

/* ===== Form Groups ===== */
.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  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);
}

.form-group input.valid {
  border-color: var(--success);
}

.error-message {
  display: block;
  font-size: 0.8rem;
  color: var(--error);
  margin-top: 6px;
  min-height: 1.2em;
}

/* ===== Document Scroll ===== */
.document-scroll {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-height: 360px;
  overflow-y: auto;
  margin-bottom: 20px;
  scrollbar-width: thin;
  scrollbar-color: var(--accent) var(--bg-input);
}

.document-scroll::-webkit-scrollbar {
  width: 6px;
}

.document-scroll::-webkit-scrollbar-track {
  background: var(--bg-input);
}

.document-scroll::-webkit-scrollbar-thumb {
  background: var(--accent);
  border-radius: 3px;
}

.document-content {
  padding: 24px;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.document-content h3 {
  color: var(--text);
  font-size: 1.2rem;
  margin-bottom: 16px;
}

.document-content h4 {
  color: var(--text);
  font-size: 1rem;
  margin-top: 20px;
  margin-bottom: 8px;
}

.document-content p {
  margin-bottom: 10px;
}

.document-content ul {
  margin-left: 20px;
  margin-bottom: 10px;
}

.document-content li {
  margin-bottom: 4px;
}

.document-content em {
  color: var(--accent);
}

/* ===== Checkbox ===== */
.checkbox-group {
  margin-bottom: 28px;
}

.checkbox-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  font-size: 0.9rem;
  line-height: 1.5;
  user-select: none;
}

.checkbox-label input[type="checkbox"] {
  display: none;
}

.checkmark {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  margin-top: 2px;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
  background: var(--accent);
  border-color: var(--accent);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
  content: '✓';
  color: white;
  font-size: 0.85rem;
  font-weight: 700;
}

/* ===== Buttons ===== */
.btn {
  padding: 14px 32px;
  border: none;
  border-radius: var(--radius);
  font-family: 'League Spartan', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn-primary {
  background: var(--accent);
  color: white;
  width: 100%;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: var(--text-secondary);
  border: 2px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--text-secondary);
  color: var(--text);
}

.btn-group {
  display: flex;
  gap: 12px;
}

.btn-group .btn-secondary {
  flex: 0 0 auto;
}

.btn-group .btn-primary {
  flex: 1;
}

/* ===== Success Screen ===== */
.success-container {
  text-align: center;
  padding: 40px 0;
}

.success-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  color: white;
  margin: 0 auto 24px;
  animation: scaleIn 0.5s ease;
}

@keyframes scaleIn {
  from {
    transform: scale(0);
  }
  to {
    transform: scale(1);
  }
}

.success-container h2 {
  margin-bottom: 12px;
}

.success-container p {
  color: var(--text-secondary);
  line-height: 1.6;
}

.success-detail {
  margin-top: 8px;
  margin-bottom: 32px !important;
}

.success-detail strong {
  color: var(--accent);
}

.success-container .btn-primary {
  max-width: 300px;
  margin: 0 auto;
}

/* ===== Footer ===== */
.footer {
  margin-top: auto;
  padding-top: 40px;
  text-align: center;
  font-size: 0.75rem;
  color: #555;
}

/* ===== Loading Spinner ===== */
.spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  vertical-align: middle;
  margin-right: 8px;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ===== Tablet Optimization ===== */
@media (min-width: 768px) {
  html {
    font-size: 20px;
  }

  .app {
    max-width: 650px;
    padding: 60px 32px;
  }

  .form-group input {
    padding: 16px 20px;
  }

  .btn {
    padding: 16px 40px;
  }

  .document-scroll {
    max-height: 400px;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 16px;
  }

  .app {
    padding: 24px 16px;
  }

  .logo {
    font-size: 2rem;
  }
}

/* ===== Toast Notification ===== */
.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--error);
  color: white;
  padding: 14px 24px;
  border-radius: var(--radius);
  font-family: 'League Spartan', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  z-index: 1000;
  transition: transform 0.3s ease;
  max-width: 90%;
  text-align: center;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

.toast.success {
  background: var(--success);
}