/* Spaced Time - Relativistic Space Travel Calculator */
/* Dark space theme with cosmic visual effects */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

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

:root {
    /* Space Theme Colors */
    --space-bg-primary: #0a0a0f;
    --space-bg-secondary: #0f0f1a;
    --space-bg-card: rgba(15, 15, 30, 0.85);
    --space-bg-card-hover: rgba(20, 20, 40, 0.9);
    
    --space-primary: #6c5ce7;
    --space-primary-glow: rgba(108, 92, 231, 0.4);
    --space-secondary: #a29bfe;
    --space-accent: #00d2d3;
    --space-accent-glow: rgba(0, 210, 211, 0.3);
    
    --space-text-primary: #ffffff;
    --space-text-secondary: rgba(255, 255, 255, 0.9);
    --space-text-muted: rgba(255, 255, 255, 0.7);
    --space-text-dim: rgba(255, 255, 255, 0.5);
    
    --space-border: rgba(108, 92, 231, 0.3);
    --space-border-glow: rgba(108, 92, 231, 0.5);
    
    --nebula-purple: rgba(108, 92, 231, 0.15);
    --nebula-blue: rgba(0, 210, 211, 0.1);
    --nebula-pink: rgba(255, 107, 129, 0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--space-bg-primary);
    color: var(--space-text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    position: relative;
    overflow-x: hidden;
}

/* Starfield Canvas */
.starfield-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* Nebula Gradient Overlays */
.nebula {
    position: fixed;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    pointer-events: none;
    z-index: 1;
    animation: nebulaFloat 20s ease-in-out infinite;
}

.nebula-1 {
    width: 600px;
    height: 600px;
    background: var(--nebula-purple);
    top: -200px;
    left: -200px;
    animation-duration: 25s;
}

.nebula-2 {
    width: 500px;
    height: 500px;
    background: var(--nebula-blue);
    bottom: -150px;
    right: -150px;
    animation-duration: 30s;
    animation-delay: -10s;
}

.nebula-3 {
    width: 400px;
    height: 400px;
    background: var(--nebula-pink);
    top: 50%;
    right: 10%;
    animation-duration: 35s;
    animation-delay: -5s;
}

@keyframes nebulaFloat {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

/* Galaxies */
.galaxy {
    position: fixed;
    pointer-events: none;
    z-index: 2;
    opacity: 0.5;
    object-fit: contain;
    animation: galaxyRotate 60s linear infinite;
}

.galaxy-1 {
    width: 400px;
    height: auto;
    top: 10%;
    left: 5%;
    animation-duration: 80s;
}

.galaxy-2 {
    width: 300px;
    height: auto;
    bottom: 15%;
    right: 8%;
    animation-duration: 100s;
    animation-direction: reverse;
}

.galaxy-3 {
    width: 250px;
    height: auto;
    top: 50%;
    left: 70%;
    animation-duration: 120s;
}

.galaxy-4 {
    width: 350px;
    height: auto;
    top: 70%;
    left: 20%;
    animation-duration: 90s;
    animation-direction: reverse;
}

@keyframes galaxyRotate {
    0% {
        transform: rotate(0deg) scale(1);
    }
    50% {
        transform: rotate(180deg) scale(1.05);
    }
    100% {
        transform: rotate(360deg) scale(1);
    }
}

.container {
    position: relative;
    z-index: 10;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
    position: relative;
}

/* Theme Selector */
.theme-selector {
    position: absolute;
    top: 2rem;
    right: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    z-index: 100;
}

.theme-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--space-text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.theme-label i {
    color: var(--space-primary);
}

.theme-select {
    padding: 0.5rem 1rem;
    background: rgba(15, 15, 30, 0.85);
    border: 1px solid var(--space-border);
    border-radius: 8px;
    color: var(--space-text-primary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    font-family: inherit;
}

.theme-select:hover {
    background: rgba(20, 20, 40, 0.9);
    border-color: var(--space-primary);
}

.theme-select:focus {
    outline: none;
    border-color: var(--space-primary);
    box-shadow: 0 0 15px var(--space-primary-glow);
}

@media (max-width: 768px) {
    .theme-selector {
        position: relative;
        top: auto;
        right: auto;
        margin: 1rem auto 0;
        justify-content: center;
    }
}

.header-content {
    animation: fadeInDown 1s ease-out;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 0.5rem;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--space-primary) 0%, var(--space-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px var(--space-primary-glow);
}

.logo-icon {
    font-size: 2.5rem;
    filter: drop-shadow(0 0 10px var(--space-primary-glow));
    animation: rocketPulse 2s ease-in-out infinite;
    display: none; /* Hidden for cosmic view (default) */
}

@keyframes rocketPulse {
    0%, 100% {
        transform: translateY(0) scale(1);
    }
    50% {
        transform: translateY(-5px) scale(1.05);
    }
}

.tagline {
    color: var(--space-text-muted);
    font-size: 1.1rem;
    font-weight: 300;
    letter-spacing: 0.5px;
}

/* Recommendation Banner */
.recommendation-banner {
    background: rgba(108, 92, 231, 0.15);
    border: 1px solid var(--space-border);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(108, 92, 231, 0.2);
    animation: fadeIn 1s ease-out;
}

.recommendation-banner i {
    color: var(--space-primary);
    font-size: 1.2rem;
    flex-shrink: 0;
}

.recommendation-banner span {
    color: var(--space-text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

.recommendation-banner strong {
    color: var(--space-accent);
    font-weight: 600;
}

/* Calculator Section */
.calculator-section {
    margin-bottom: 3rem;
}

.calculator-card,
.results-card {
    background: var(--space-bg-card);
    border: 1px solid var(--space-border);
    border-radius: 20px;
    padding: 2.5rem;
    backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4), 0 0 40px var(--space-primary-glow);
    animation: fadeInUp 0.8s ease-out;
    transition: all 0.3s ease;
}

.calculator-card:hover,
.results-card:hover {
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5), 0 0 60px var(--space-primary-glow);
    border-color: var(--space-border-glow);
}

.section-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--space-text-primary);
    text-align: center;
    background: linear-gradient(135deg, var(--space-primary) 0%, var(--space-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Input Groups */
.input-group {
    margin-bottom: 2rem;
}

.destination-description {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--space-text-muted);
    font-style: italic;
    min-height: 1.2rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.destination-description:not(:empty) {
    opacity: 1;
}

.input-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--space-text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

.input-group label i {
    color: var(--space-primary);
}

.input-field,
select.input-field {
    width: 100%;
    padding: 0.875rem 1.25rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--space-border);
    border-radius: 12px;
    color: var(--space-text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.input-field:focus,
select.input-field:focus {
    outline: none;
    border-color: var(--space-primary);
    box-shadow: 0 0 20px var(--space-primary-glow);
    background: rgba(0, 0, 0, 0.4);
}

.input-field::placeholder {
    color: var(--space-text-dim);
}

/* Trip Type Toggle */
.mode-toggle,
.trip-type-toggle {
    display: flex;
    gap: 1rem;
}

.mode-btn,
.trip-btn {
    flex: 1;
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--space-border);
    border-radius: 12px;
    color: var(--space-text-secondary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    backdrop-filter: blur(10px);
}

.mode-btn:hover,
.trip-btn:hover {
    background: rgba(108, 92, 231, 0.2);
    border-color: var(--space-primary);
    transform: translateY(-2px);
}

.mode-btn.active,
.trip-btn.active {
    background: linear-gradient(135deg, var(--space-primary) 0%, var(--space-secondary) 100%);
    border-color: var(--space-primary);
    color: var(--space-text-primary);
    box-shadow: 0 4px 20px var(--space-primary-glow);
}

.mode-description {
    margin-top: 0.75rem;
    font-size: 0.9rem;
    color: var(--space-text-muted);
    font-style: italic;
}

/* G-Force Slider */
.slider-container {
    position: relative;
    margin: 1rem 0;
}

.slider {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.3);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--space-primary) 0%, var(--space-accent) 100%);
    cursor: pointer;
    box-shadow: 0 0 15px var(--space-primary-glow);
    transition: all 0.3s ease;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 25px var(--space-primary-glow);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--space-primary) 0%, var(--space-accent) 100%);
    cursor: pointer;
    border: none;
    box-shadow: 0 0 15px var(--space-primary-glow);
    transition: all 0.3s ease;
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 25px var(--space-primary-glow);
}

.slider-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--space-text-dim);
}

.recommended-g {
    color: var(--space-accent);
    font-weight: 600;
}

.g-force-zones {
    display: flex;
    margin-top: 0.5rem;
    height: 32px;
    border-radius: 6px;
    position: relative;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.zone {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    transition: all 0.3s ease;
    min-height: 32px;
    padding: 0 0.5rem;
    border-right: 2px solid rgba(0, 0, 0, 0.3);
}

.zone:last-child {
    border-right: none;
}

.zone span {
    white-space: nowrap;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.8);
    letter-spacing: 0.5px;
}

.zone-comfortable {
    background: linear-gradient(135deg, rgba(0, 210, 211, 0.7) 0%, rgba(0, 180, 190, 0.7) 100%);
    color: var(--space-text-primary);
    border-right-color: rgba(0, 150, 160, 0.5);
}

.zone-tolerable {
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.7) 0%, rgba(255, 160, 0, 0.7) 100%);
    color: var(--space-text-primary);
    border-right-color: rgba(200, 150, 0, 0.5);
}

.zone-tolerable span {
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.5);
}

.zone-extreme {
    background: linear-gradient(135deg, rgba(255, 107, 129, 0.7) 0%, rgba(220, 38, 38, 0.7) 100%);
    color: var(--space-text-primary);
}

.zone.active {
    box-shadow: 
        inset 0 0 10px rgba(255, 255, 255, 0.2);
    transform: scaleY(1.1);
    z-index: 1;
}

.zone-comfortable.active {
    box-shadow: 
        0 0 20px rgba(0, 210, 211, 0.8),
        0 0 30px rgba(0, 210, 211, 0.4),
        inset 0 0 10px rgba(255, 255, 255, 0.2);
}

.zone-tolerable.active {
    box-shadow: 
        0 0 20px rgba(255, 193, 7, 0.8),
        0 0 30px rgba(255, 193, 7, 0.4),
        inset 0 0 10px rgba(255, 255, 255, 0.2);
}

.zone-extreme.active {
    box-shadow: 
        0 0 20px rgba(255, 107, 129, 0.8),
        0 0 30px rgba(255, 107, 129, 0.4),
        inset 0 0 10px rgba(255, 255, 255, 0.2);
}

/* Calculate Button */
.calculate-btn {
    width: 100%;
    padding: 1.25rem 2rem;
    background: linear-gradient(135deg, var(--space-primary) 0%, var(--space-accent) 100%);
    border: none;
    border-radius: 12px;
    color: var(--space-text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    box-shadow: 0 4px 20px var(--space-primary-glow);
    margin-top: 1rem;
}

.calculate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--space-primary-glow);
}

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

.calculate-btn.has-pending-changes {
    animation: pulse-pending 2s ease-in-out infinite;
    box-shadow: 0 4px 20px var(--space-primary-glow), 0 0 20px rgba(255, 200, 0, 0.6);
    position: relative;
}

.calculate-btn.has-pending-changes::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(255, 200, 0, 0.4), rgba(255, 150, 0, 0.4));
    z-index: -1;
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-pending {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 20px var(--space-primary-glow), 0 0 20px rgba(255, 200, 0, 0.6);
    }
    50% {
        transform: scale(1.02);
        box-shadow: 0 6px 25px var(--space-primary-glow), 0 0 30px rgba(255, 200, 0, 0.8);
    }
}

@keyframes pulse-glow {
    0%, 100% {
        opacity: 0.6;
    }
    50% {
        opacity: 1;
    }
}

.calculate-btn.has-pending-changes:hover {
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 8px 30px var(--space-primary-glow), 0 0 35px rgba(255, 200, 0, 0.9);
}

.calculate-btn i {
    font-size: 1.2rem;
}

/* Results */
.results-card {
    margin-top: 2rem;
    animation: fadeInUp 0.8s ease-out;
}

.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.result-box {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--space-border);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.result-box:hover {
    transform: translateY(-4px);
    border-color: var(--space-primary);
    box-shadow: 0 8px 25px var(--space-primary-glow);
}

.result-primary {
    border-color: var(--space-primary);
    background: rgba(108, 92, 231, 0.15);
}

.result-secondary {
    border-color: var(--space-accent);
    background: rgba(0, 210, 211, 0.15);
}

.result-icon {
    font-size: 2rem;
    color: var(--space-primary);
    flex-shrink: 0;
}

.result-secondary .result-icon {
    color: var(--space-accent);
}

.result-content {
    flex: 1;
}

.result-label {
    font-size: 0.85rem;
    color: var(--space-text-muted);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-value {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--space-text-primary);
    font-family: 'Space Grotesk', sans-serif;
    margin-bottom: 0.25rem;
}

.result-subtitle {
    font-size: 0.8rem;
    color: var(--space-text-dim);
    font-style: italic;
}

/* Time Comparison */
.time-comparison {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--space-border);
}

.comparison-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--space-text-secondary);
    text-align: center;
}

.comparison-bar {
    display: flex;
    height: 60px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 1rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.comparison-segment {
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.5s ease;
    position: relative;
}

.traveler-segment {
    background: linear-gradient(135deg, var(--space-primary) 0%, var(--space-secondary) 100%);
}

.earth-segment {
    background: linear-gradient(135deg, var(--space-accent) 0%, #00b8b9 100%);
}

.segment-label {
    color: var(--space-text-primary);
    font-weight: 600;
    font-size: 0.9rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.comparison-note {
    text-align: center;
    color: var(--space-text-muted);
    font-size: 0.9rem;
    font-style: italic;
}

/* Journey Animation */
.journey-animation {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--space-border);
}

.journey-track {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    margin: 2rem 0;
    padding: 1rem 0;
}

.journey-start,
.journey-end {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    z-index: 2;
}

.planet-icon {
    font-size: 2.5rem;
    filter: drop-shadow(0 0 10px var(--space-primary-glow));
    animation: planetPulse 2s ease-in-out infinite;
}

@keyframes planetPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.journey-label {
    font-size: 0.85rem;
    color: var(--space-text-secondary);
    font-weight: 500;
}

.journey-path {
    flex: 1;
    height: 4px;
    background: linear-gradient(90deg, var(--space-primary) 0%, var(--space-accent) 100%);
    border-radius: 2px;
    position: relative;
    margin: 0 1rem;
    overflow: visible;
    box-shadow: 0 0 10px var(--space-primary-glow);
}

.spaceship {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    transition: left 0.1s ease-out, transform 0.3s ease;
    filter: drop-shadow(0 0 10px var(--space-accent-glow));
    z-index: 3;
    user-select: none;
    cursor: grab;
}

.spaceship.pulse-draggable {
    animation: pulse-ship 2s ease-in-out infinite;
    cursor: grab;
}

@keyframes pulse-ship {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
        filter: drop-shadow(0 0 10px var(--space-accent-glow));
    }
    50% {
        transform: translate(-50%, -50%) scale(1.15);
        filter: drop-shadow(0 0 20px var(--space-accent-glow));
    }
}

.spaceship:active,
.spaceship.dragging {
    cursor: grabbing;
    transform: translate(-50%, -50%) scale(1.2);
    filter: drop-shadow(0 0 20px var(--space-accent-glow));
    transition: transform 0.1s ease, filter 0.1s ease;
    animation: none; /* Stop pulse when dragging */
}

.journey-progress {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: var(--space-accent);
    width: 0%;
    transition: width 3s ease-in-out;
    box-shadow: 0 0 15px var(--space-accent-glow);
    border-radius: 2px;
}

.journey-instructions {
    text-align: center;
    color: var(--space-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    font-style: italic;
}

.journey-midpoint {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--space-accent);
    border-radius: 50%;
    border: 2px solid var(--space-primary);
    box-shadow: 0 0 10px var(--space-accent-glow);
    z-index: 2;
    display: none;
}

.interactive-stats {
    display: none; /* Hidden by default, shown when journey is calculated */
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
    padding: 1.5rem;
    background: rgba(108, 92, 231, 0.05);
    border-radius: 12px;
    border: 1px solid var(--space-border);
}

.stat-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 8px;
    border: 1px solid var(--space-border);
    transition: all 0.3s ease;
}

.stat-card:hover {
    background: rgba(59, 130, 246, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--space-primary-glow);
}

.stat-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 0 5px var(--space-primary-glow));
}

.stat-content {
    flex: 1;
}

.stat-content .stat-label {
    font-size: 0.75rem;
    color: var(--space-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
}

.stat-content .stat-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--space-text-primary);
    font-family: 'Space Grotesk', sans-serif;
}

.journey-path {
    cursor: pointer;
}

.journey-stats {
    text-align: center;
    margin-top: 1rem;
}

.journey-stat {
    display: inline-flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--space-text-muted);
}

.stat-value {
    font-size: 1rem;
    color: var(--space-text-secondary);
    font-weight: 600;
}

/* Formulas Section */
.formulas-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--space-border);
}

.formula-card {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--space-border);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    backdrop-filter: blur(10px);
}

.formula-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--space-text-primary);
    margin-bottom: 1rem;
    font-family: 'Space Grotesk', sans-serif;
}

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

.formula-equation {
    font-size: 1.2rem;
    font-family: 'Space Grotesk', monospace;
    color: var(--space-text-primary);
    padding: 1rem;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    border-left: 3px solid var(--space-primary);
    line-height: 1.8;
    overflow-x: auto;
}

.formula-fraction {
    display: inline-block;
    vertical-align: middle;
    text-align: center;
    margin: 0 0.2rem;
}

.formula-fraction .numerator {
    display: block;
    border-bottom: 1px solid var(--space-text-primary);
    padding: 0 0.3rem 0.1rem;
}

.formula-fraction .denominator {
    display: block;
    padding: 0.1rem 0.3rem 0;
}

.formula-explanation {
    font-size: 0.9rem;
    color: var(--space-text-muted);
    line-height: 1.6;
    font-style: italic;
}

.formula-constants {
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(108, 92, 231, 0.1);
    border-radius: 8px;
    border-left: 3px solid var(--space-primary);
}

.formula-variables {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0 0;
}

.formula-variables li {
    padding: 0.5rem 0;
    color: var(--space-text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.formula-variables li:last-child {
    border-bottom: none;
}

.formula-variables strong {
    color: var(--space-primary);
    font-family: 'Space Grotesk', monospace;
    font-size: 0.9rem;
    color: var(--space-text-secondary);
}

/* Footer */
#footer {
    margin-top: auto;
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid var(--space-border);
    animation: fadeIn 1s ease-out;
}

.footer-content {
    color: var(--space-text-muted);
}

.footer-content p {
    margin-bottom: 0.5rem;
}

.footer-subtitle {
    font-size: 0.85rem;
    color: var(--space-text-dim);
    margin-bottom: 1rem;
}

.footer-links {
    margin: 1rem 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--space-text-muted);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--space-primary);
}

.footer-separator {
    color: var(--space-text-dim);
}

.footer-copyright {
    font-size: 0.85rem;
    color: var(--space-text-dim);
    margin-top: 1rem;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}



/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .logo {
        font-size: 2rem;
    }

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

    .calculator-card,
    .results-card {
        padding: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .trip-type-toggle {
        flex-direction: column;
    }

    .results-grid {
        grid-template-columns: 1fr;
    }

    .recommendation-banner {
        flex-direction: column;
        text-align: center;
    }

    .recommendation-banner span {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.5rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .tagline {
        font-size: 0.9rem;
    }

    .calculator-card,
    .results-card {
        padding: 1.25rem;
    }

    .result-value {
        font-size: 1.4rem;
    }
}