/* Base styles */
html, body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
    color: #2d3748;
}

/* Clock toggle (24-hour • AM/PM pill) */
.clock-toggle {
  display: inline-block;
  cursor: pointer;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.clock-toggle input[type="checkbox"] {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.clock-toggle .toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.4rem 0.9rem 0.4rem 1rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  color: #1b0b2a;
  background: rgba(255,255,255,0.96);
  box-shadow: 0 2px 6px rgba(7,5,18,0.12);
  transition: background .18s ease, color .15s ease, transform .08s ease;
}

.clock-toggle .toggle-btn::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(180deg, #f1f1f6 0%, #dfe3f8 100%);
  box-shadow: 0 1px 2px rgba(0,0,0,0.12);
  transform: translateX(0);
  transition: transform .18s ease, background .18s ease;
}

.clock-toggle .toggle-btn {
  background: #efe3fb;
  color: #3b104a;
  box-shadow: 0 3px 10px rgba(59,16,74,0.08);
}

.clock-toggle .toggle-btn::before {
  background: linear-gradient(180deg, #fffafc 0%, #f7eefb 100%);
}

.clock-toggle input[type="checkbox"]:checked + .toggle-btn {
  color: #fff;
  background-image: linear-gradient(180deg, #a18cd1 0%, #fbc2eb 70%);
  box-shadow: 0 6px 18px rgba(161,140,209,0.18);
}

* {
    box-sizing: border-box;
}

/* Hero Section */
.hero-section {
    padding: 3rem 1rem 2rem;
    margin-bottom: 2rem;
}

.hero-header {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.welcome-container {
    max-width: 800px;
}

.hero-title {
    color: #2d3748 !important;
    font-size: 3rem;
    font-weight: 700;
    margin: 0 0 1rem 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    letter-spacing: -0.025em;
}

.hero-subtitle {
    color: #2f3b57;
    font-size: 1.25rem;
    font-weight: 400;
    margin: 0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Time Display Card */
.time-display-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.15);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.time-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.time-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: #4a5568;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.time-value {
    font-size: 2rem;
    font-weight: 700;
    color: #2d3748;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

/* Calculator Section */
.calculator-section {
    margin-bottom: 2rem;
}

.calculator-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.calculator-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.calculator-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.card-header {
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: #2d3748;
    margin: 0 0 0.5rem 0;
}

.card-description {
    font-size: 0.875rem;
    color: #4a5568;
    margin: 0;
    line-height: 1.5;
}

/* Form Styles */
.calculator-form {
    width: 100%;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.input-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: #2d3748;
    margin-bottom: 0.25rem;
}

.input-wrapper {
    position: relative;
}

.time-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background: rgba(255, 255, 255, 0.05);
    color: #2d3748;
}

.time-input:focus {
    outline: none;
    border-color: #a18cd1;
    box-shadow: 0 0 0 3px rgba(161, 140, 209, 0.1);
}

.input-hint {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.75rem;
    color: #718096;
    pointer-events: none;
}

/* Button Styles */
.btn-primary {
    background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(161, 140, 209, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(161, 140, 209, 0.4);
}

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

.btn-primary:focus {
    outline: none;
    background: linear-gradient(135deg, #a18cd1 0%, #fbc2eb 100%);
    box-shadow: 0 6px 20px rgba(161, 140, 209, 0.4), 0 0 0 3px rgba(161, 140, 209, 0.2);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: #4a5568;
    border: 2px solid rgba(255, 255, 255, 0.2);
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
}

.btn-secondary:hover {
    border-color: #a18cd1;
    color: #a18cd1;
    background: rgba(161, 140, 209, 0.15);
}

.btn-secondary:focus {
    outline: none;
    border-color: #a18cd1;
    color: #a18cd1;
    background: rgba(161, 140, 209, 0.15);
    box-shadow: 0 0 0 3px rgba(161, 140, 209, 0.1);
}

.btn-secondary:active {
    border-color: #a18cd1;
    color: #a18cd1;
    background: rgba(161, 140, 209, 0.15);
    transform: translateY(0);
}

.sleep-now-btn {
    white-space: nowrap;
}

.btn-icon {
    font-size: 1.125rem;
}

/* Results Section */
.results-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem 2rem;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #dc2626;
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.error-icon {
    font-size: 1.125rem;
}

.results-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.results-header {
    margin-bottom: 1.5rem;
}

.results-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2d3748;
    margin: 0 0 1rem 0;
}

.info-note {
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.info-icon {
    font-size: 1.125rem;
    flex-shrink: 0;
}

.info-content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.info-text {
    margin: 0;
    font-size: 0.875rem;
    color: #2b6cb0;
    line-height: 1.5;
}

.cycles-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
}

.cycle-item {
    background: rgba(255, 255, 255, 0.12);
    backdrop-filter: blur(20px);
    color: #2d3748;
    padding: 1rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: transform 0.2s ease;
}

.cycle-item:hover {
    transform: translateY(-2px);
}

.cycle-time {
    font-size: 1.125rem;
    font-weight: 600;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
}

/* Legacy button styles for compatibility */
a, .btn-link {
    color: #a18cd1;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #a18cd1;
}

 .content {
    padding-top: 1.1rem;
}

h1:focus {
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid #e50000;
}

.validation-message {
    color: #e50000;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

.blazor-error-boundary::after {
    content: "An error has occurred."
}

.darker-border-checkbox.form-check-input {
    border-color: #929292;
}

/* responsive tweaks */
@media (max-width: 640.98px) {
  .top-row { justify-content: space-between; }
  .clock-toggle .toggle-btn { font-size: 0.92rem; padding-left: 1rem; }
  .hero-header {
      flex-direction: column;
      align-items: flex-start;
  }
  .hero-toggle {
      align-self: flex-end;
  }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .time-display-card {
        flex-direction: column;
        text-align: center;
    }
    
    .calculator-grid {
        grid-template-columns: 1fr;
    }
    
    .cycles-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 1200px) and (min-width: 769px) {
    .cycles-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: 0.75rem;
    }
    
    .cycle-item {
        padding: 0.75rem;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: 2rem 1rem 1.5rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .calculator-card, .time-display-card, .results-card {
        padding: 1.5rem;
    }
}