/* ============================================
   COSMICLINK - Universal Signal Detection Array
   Deep Space Observatory Aesthetic
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Core Colors */
    --void-black: #050709;
    --deep-space: #0a0e17;
    --nebula-dark: #0f1422;
    --panel-bg: #131926;
    --panel-border: #1e2a3a;
    
    /* Accent Colors */
    --signal-cyan: #00d4ff;
    --signal-cyan-dim: rgba(0, 212, 255, 0.3);
    --signal-green: #00ff88;
    --signal-green-dim: rgba(0, 255, 136, 0.3);
    --signal-purple: #7b2fff;
    --signal-purple-dim: rgba(123, 47, 255, 0.3);
    --alert-orange: #ff6b35;
    --alert-red: #ff3366;
    
    /* Text Colors */
    --text-primary: #e8eef5;
    --text-secondary: #8899aa;
    --text-dim: #4a5568;
    
    /* Typography */
    --font-display: 'Orbitron', sans-serif;
    --font-mono: 'IBM Plex Mono', monospace;
    --font-body: 'Exo 2', sans-serif;
    
    /* Spacing */
    --nav-height: 56px;
    --slider-height: 52px;
    --footer-height: 48px;
    --content-padding: 16px;
    
    /* Effects */
    --glow-cyan: 0 0 20px rgba(0, 212, 255, 0.4);
    --glow-green: 0 0 20px rgba(0, 255, 136, 0.4);
    --glow-purple: 0 0 20px rgba(123, 47, 255, 0.4);
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-body);
    background: var(--void-black);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--deep-space);
}

::-webkit-scrollbar-thumb {
    background: var(--panel-border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--signal-cyan-dim);
}

/* ============================================
   AMBIENT BACKGROUND
   ============================================ */

.cosmos-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    background: radial-gradient(ellipse at 50% 0%, var(--nebula-dark) 0%, var(--void-black) 70%);
}

.stars {
    position: absolute;
    inset: 0;
    background-image: 
        radial-gradient(2px 2px at 20px 30px, var(--text-dim), transparent),
        radial-gradient(2px 2px at 40px 70px, var(--text-secondary), transparent),
        radial-gradient(1px 1px at 90px 40px, var(--text-dim), transparent),
        radial-gradient(2px 2px at 160px 120px, var(--text-dim), transparent),
        radial-gradient(1px 1px at 230px 80px, var(--signal-cyan), transparent),
        radial-gradient(1px 1px at 300px 150px, var(--text-dim), transparent),
        radial-gradient(2px 2px at 370px 50px, var(--text-secondary), transparent);
    background-size: 400px 200px;
    animation: starFloat 120s linear infinite;
    opacity: 0.6;
}

.stars-2 {
    background-size: 300px 250px;
    animation-duration: 180s;
    animation-direction: reverse;
    opacity: 0.4;
}

.stars-3 {
    background-size: 500px 180px;
    animation-duration: 240s;
    opacity: 0.3;
}

@keyframes starFloat {
    from { transform: translateY(0); }
    to { transform: translateY(-200px); }
}

.nebula {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 20% 80%, var(--signal-purple-dim), transparent),
        radial-gradient(ellipse 60% 40% at 80% 20%, var(--signal-cyan-dim), transparent);
    opacity: 0.3;
    filter: blur(60px);
}

/* ============================================
   TOP NAVIGATION
   ============================================ */

.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: linear-gradient(180deg, var(--deep-space) 0%, rgba(10, 14, 23, 0.95) 100%);
    border-bottom: 1px solid var(--panel-border);
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--content-padding);
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 36px;
    height: 36px;
    animation: logoPulse 4s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { filter: drop-shadow(0 0 4px var(--signal-cyan)); }
    50% { filter: drop-shadow(0 0 12px var(--signal-cyan)); }
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    background: linear-gradient(135deg, var(--signal-cyan) 0%, var(--signal-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-status {
    display: flex;
    align-items: center;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 20px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-dim);
    transition: all 0.3s ease;
}

.status-dot.active {
    background: var(--signal-green);
    box-shadow: var(--glow-green);
    animation: statusPulse 1.5s ease-in-out infinite;
}

@keyframes statusPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.status-text {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

/* ============================================
   SECTION SLIDER
   ============================================ */

.section-slider {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    height: var(--slider-height);
    display: flex;
    background: var(--deep-space);
    border-bottom: 1px solid var(--panel-border);
    z-index: 99;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.section-slider::-webkit-scrollbar {
    display: none;
}

.slider-tab {
    flex: 1;
    min-width: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 8px 12px;
    background: transparent;
    border: none;
    color: var(--text-dim);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.slider-tab::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--signal-cyan), var(--signal-green));
    transition: width 0.3s ease;
}

.slider-tab:hover {
    color: var(--text-secondary);
}

.slider-tab.active {
    color: var(--signal-cyan);
}

.slider-tab.active::after {
    width: 60%;
}

.tab-icon {
    width: 20px;
    height: 20px;
}

.slider-tab span {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.08em;
}

/* ============================================
   MAIN CONTENT
   ============================================ */

.main-content {
    position: relative;
    margin-top: calc(var(--nav-height) + var(--slider-height));
    margin-bottom: var(--footer-height);
    min-height: calc(100vh - var(--nav-height) - var(--slider-height) - var(--footer-height));
    min-height: calc(100dvh - var(--nav-height) - var(--slider-height) - var(--footer-height));
    padding: var(--content-padding);
}

.content-section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.content-section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.section-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* ============================================
   SCANNER SECTION
   ============================================ */

.scanner-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 600px;
    margin: 0 auto;
}

/* Primary Visualization */
.viz-primary {
    position: relative;
    aspect-ratio: 16/10;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 12px;
    overflow: hidden;
}

.frequency-display {
    width: 100%;
    height: 100%;
    display: block;
}

/* Info Banner */
.info-banner {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 12px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.08) 0%, rgba(123, 47, 255, 0.08) 100%);
    border: 1px solid var(--signal-cyan-dim);
    border-radius: 8px;
    margin-bottom: 12px;
}

.info-icon {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    color: var(--signal-cyan);
    margin-top: 2px;
}

.info-icon svg {
    width: 100%;
    height: 100%;
}

.info-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.info-text strong {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.05em;
    color: var(--signal-cyan);
}

.info-text span {
    font-size: 0.7rem;
    color: var(--text-secondary);
    line-height: 1.3;
}

/* Ultrasonic Indicator */
.ultrasonic-indicator {
    position: absolute;
    top: 12px;
    right: 12px;
    display: none;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: rgba(123, 47, 255, 0.2);
    border: 1px solid var(--signal-purple);
    border-radius: 20px;
    animation: ultrasonicPulse 1s ease-in-out infinite;
}

.ultrasonic-indicator.active {
    display: flex;
}

.ultrasonic-dot {
    width: 6px;
    height: 6px;
    background: var(--signal-purple);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--signal-purple);
}

.ultrasonic-text {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: var(--signal-purple);
}

@keyframes ultrasonicPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

.viz-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    display: none;
}

.scanning .viz-overlay {
    display: flex;
}

.scan-ring {
    position: absolute;
    width: 60%;
    aspect-ratio: 1;
    border: 1px solid var(--signal-cyan-dim);
    border-radius: 50%;
    opacity: 0;
}

.scan-ring.ring-2 {
    width: 75%;
    border-color: var(--signal-green-dim);
}

.scan-ring.ring-3 {
    width: 90%;
    border-color: var(--signal-purple-dim);
}

.scanning .scan-ring {
    opacity: 1;
    animation: scanRing 3s ease-out infinite;
}

.scanning .scan-ring.ring-2 {
    animation-delay: 1s;
}

.scanning .scan-ring.ring-3 {
    animation-delay: 2s;
}

@keyframes scanRing {
    0% { transform: scale(0.8); opacity: 0.8; }
    100% { transform: scale(1.2); opacity: 0; }
}

.viz-data {
    position: absolute;
    bottom: 12px;
    left: 12px;
    right: 12px;
    display: flex;
    justify-content: space-between;
}

.data-point {
    display: flex;
    flex-direction: column;
}

.data-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.1em;
    color: var(--text-dim);
}

.data-value {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--signal-cyan);
}

/* Sensor Grid */
.sensor-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.sensor-card {
    background: #131926;
    border: 1px solid #1e2a3a;
    border-radius: 8px;
    padding: 10px;
    transition: all 0.3s ease;
}

.sensor-card.active {
    border-color: #00d4ff;
    box-shadow: inset 0 0 20px rgba(0, 212, 255, 0.05);
}

.sensor-card.error {
    border-color: #ff3366;
}

.sensor-header {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 8px;
}

.sensor-icon {
    width: 14px;
    height: 14px;
    color: #4a5568;
    transition: color 0.3s ease;
}

.sensor-card.active .sensor-icon {
    color: #00d4ff;
}

.sensor-name {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    color: #8899aa;
}

.sensor-status {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.sensor-state {
    font-family: var(--font-mono);
    font-size: 0.5rem;
    color: #4a5568;
    min-width: 50px;
}

.sensor-card.active .sensor-state {
    color: #00ff88;
}

.sensor-level {
    flex: 1;
    height: 3px;
    background: #0f1422;
    border-radius: 2px;
    overflow: hidden;
}

.level-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #00d4ff, #00ff88);
    border-radius: 2px;
    transition: width 0.1s ease;
}

.sensor-reading {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 500;
    color: #e8eef5;
}

.sensor-card.active .sensor-reading {
    color: #00d4ff;
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

/* Master Control */
.master-control {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 16px;
}

.scan-button {
    position: relative;
    width: 100px;
    height: 100px;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.scan-button-ring {
    position: absolute;
    inset: 0;
    border: 2px solid #00d4ff;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.scan-button:hover .scan-button-ring {
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
    transform: scale(1.05);
}

.scan-button.active .scan-button-ring {
    border-color: #00ff88;
    box-shadow: 0 0 20px rgba(0, 255, 136, 0.4);
    animation: ringPulse 2s ease-in-out infinite;
}

@keyframes ringPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.08); opacity: 0.7; }
}

.scan-button-core {
    width: 60px;
    height: 60px;
    background: #131926;
    border: 1px solid #1e2a3a;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.scan-button:hover .scan-button-core {
    background: #0f1422;
}

.scan-icon {
    width: 24px;
    height: 24px;
    color: #00d4ff;
    transition: all 0.3s ease;
}

.scan-button.active .scan-icon {
    color: #00ff88;
}

.scan-button.active .scan-icon polygon {
    fill: #00ff88;
}

.scan-button-text {
    position: absolute;
    bottom: -24px;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: #8899aa;
    white-space: nowrap;
}

.scan-duration {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    margin-top: 20px;
}

.duration-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.1em;
    color: var(--text-dim);
}

.duration-value {
    font-family: var(--font-mono);
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: 0.05em;
}

/* ============================================
   SIGNALS SECTION
   ============================================ */

.signals-container {
    max-width: 600px;
    margin: 0 auto;
}

.signals-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.anomaly-counter {
    text-align: right;
}

.counter-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--signal-cyan);
    text-shadow: var(--glow-cyan);
    line-height: 1;
}

.counter-label {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.08em;
    color: var(--text-dim);
}

.signal-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 200px;
}

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    text-align: center;
}

.empty-icon {
    width: 64px;
    height: 64px;
    color: var(--text-dim);
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-text {
    font-family: var(--font-display);
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.empty-subtext {
    font-size: 0.8rem;
    color: var(--text-dim);
}

/* Signal Card */
.signal-card {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.signal-card:hover {
    border-color: var(--signal-cyan-dim);
    transform: translateX(4px);
}

.signal-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.signal-id {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--signal-cyan);
}

.signal-time {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-dim);
}

.signal-preview {
    height: 40px;
    background: var(--nebula-dark);
    border-radius: 6px;
    margin-bottom: 12px;
    overflow: hidden;
}

.signal-preview canvas {
    width: 100%;
    height: 100%;
}

.signal-meta {
    display: flex;
    gap: 16px;
}

.signal-meta-item {
    display: flex;
    flex-direction: column;
}

.meta-label {
    font-family: var(--font-mono);
    font-size: 0.55rem;
    letter-spacing: 0.08em;
    color: var(--text-dim);
}

.meta-value {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
}

/* Analysis Panel */
.analysis-panel {
    position: fixed;
    bottom: var(--footer-height);
    left: 0;
    right: 0;
    max-height: 70vh;
    background: var(--deep-space);
    border-top: 1px solid var(--panel-border);
    border-radius: 20px 20px 0 0;
    z-index: 98;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

.analysis-panel.hidden {
    display: none;
}

.analysis-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px var(--content-padding);
    border-bottom: 1px solid var(--panel-border);
    position: sticky;
    top: 0;
    background: var(--deep-space);
}

.analysis-header h3 {
    font-family: var(--font-display);
    font-size: 0.85rem;
    letter-spacing: 0.12em;
    color: var(--text-primary);
}

.close-analysis {
    width: 32px;
    height: 32px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

.close-analysis:hover {
    border-color: var(--signal-cyan);
    color: var(--signal-cyan);
}

.close-analysis svg {
    width: 16px;
    height: 16px;
}

.analysis-content {
    padding: var(--content-padding);
}

.signal-detail-viz {
    width: 100%;
    height: 150px;
    background: var(--panel-bg);
    border-radius: 10px;
    margin-bottom: 16px;
}

.analysis-data {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.interpret-button {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 20px;
    background: linear-gradient(135deg, var(--signal-purple) 0%, var(--signal-cyan) 100%);
    border: none;
    border-radius: 10px;
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
}

.interpret-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(123, 47, 255, 0.4);
}

.interpret-button svg {
    width: 20px;
    height: 20px;
    animation: spin 4s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.interpretation-result {
    margin-top: 20px;
    padding: 16px;
    background: linear-gradient(135deg, rgba(123, 47, 255, 0.1) 0%, rgba(0, 212, 255, 0.05) 100%);
    border: 1px solid #7b2fff;
    border-radius: 10px;
}

.interpretation-result.hidden {
    display: none;
}

.interpretation-result h4 {
    font-family: var(--font-display);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    color: #7b2fff;
    margin-bottom: 16px;
    text-align: center;
}

.interpretation-result p,
.interpretation-result .decode-content {
    font-size: 0.85rem;
    color: #e8eef5;
    line-height: 1.7;
}

.interpretation-result strong {
    color: #00d4ff;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.05em;
}

/* ============================================
   TRANSMIT SECTION
   ============================================ */

.transmit-container {
    max-width: 600px;
    margin: 0 auto;
}

.transmit-header {
    margin-bottom: 24px;
}

.transmit-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.input-group {
    position: relative;
}

.input-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    margin-bottom: 8px;
}

.message-input {
    width: 100%;
    min-height: 120px;
    padding: 16px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-primary);
    resize: vertical;
    transition: border-color 0.3s ease;
}

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

.message-input:focus {
    outline: none;
    border-color: var(--signal-cyan);
}

.char-count {
    position: absolute;
    bottom: 12px;
    right: 12px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-dim);
}

.encoding-options {
    display: flex;
    flex-direction: column;
}

.encoding-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.encoding-option {
    padding: 14px 12px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
    cursor: pointer;
    text-align: center;
    transition: all 0.3s ease;
}

.encoding-option:hover {
    border-color: var(--signal-cyan-dim);
}

.encoding-option.active {
    border-color: var(--signal-cyan);
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 255, 136, 0.05) 100%);
}

.encoding-name {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.08em;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.encoding-desc {
    display: block;
    font-size: 0.55rem;
    color: var(--text-dim);
}

.transmit-preview {
    display: flex;
    flex-direction: column;
}

.preview-canvas {
    width: 100%;
    height: 80px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
}

.transmit-button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 24px;
    background: linear-gradient(135deg, var(--signal-cyan) 0%, var(--signal-green) 100%);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.transmit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.transmit-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.transmit-icon svg {
    width: 24px;
    height: 24px;
    color: var(--deep-space);
}

.transmit-text {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: var(--deep-space);
}

.transmit-status {
    padding: 16px;
    background: var(--panel-bg);
    border-radius: 10px;
    text-align: center;
}

.transmit-status.hidden {
    display: none;
}

.transmit-progress {
    height: 4px;
    background: var(--nebula-dark);
    border-radius: 2px;
    margin-bottom: 12px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--signal-cyan), var(--signal-green));
    border-radius: 2px;
    transition: width 0.1s linear;
}

.transmit-status .status-text {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    color: var(--signal-cyan);
}

/* ============================================
   LOG SECTION
   ============================================ */

.log-container {
    max-width: 600px;
    margin: 0 auto;
}

.log-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.clear-log {
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--panel-border);
    border-radius: 6px;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    cursor: pointer;
    transition: all 0.3s ease;
}

.clear-log:hover {
    border-color: var(--alert-red);
    color: var(--alert-red);
}

.log-filters {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.log-filters::-webkit-scrollbar {
    display: none;
}

.log-filter {
    padding: 8px 14px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.08em;
    color: var(--text-dim);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.3s ease;
}

.log-filter:hover {
    color: var(--text-secondary);
}

.log-filter.active {
    border-color: var(--signal-cyan);
    color: var(--signal-cyan);
    background: rgba(0, 212, 255, 0.1);
}

.log-entries {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 40vh;
    overflow-y: auto;
    margin-bottom: 20px;
}

.log-entry {
    display: grid;
    grid-template-columns: 70px 60px 1fr;
    gap: 12px;
    padding: 12px;
    background: var(--panel-bg);
    border-radius: 8px;
    font-size: 0.8rem;
}

.log-time {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-dim);
}

.log-type {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    letter-spacing: 0.05em;
    padding: 2px 6px;
    border-radius: 4px;
    text-align: center;
    align-self: flex-start;
}

.log-entry.system .log-type {
    background: var(--signal-cyan-dim);
    color: var(--signal-cyan);
}

.log-entry.signal .log-type {
    background: var(--signal-green-dim);
    color: var(--signal-green);
}

.log-entry.transmit .log-type {
    background: var(--signal-purple-dim);
    color: var(--signal-purple);
}

.log-entry.error .log-type {
    background: rgba(255, 51, 102, 0.2);
    color: var(--alert-red);
}

.log-message {
    color: var(--text-secondary);
    word-break: break-word;
}

.session-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    padding: 16px;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 10px;
}

.stat {
    text-align: center;
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--signal-cyan);
    display: block;
    margin-bottom: 4px;
}

.stat-label {
    font-family: var(--font-mono);
    font-size: 0.5rem;
    letter-spacing: 0.08em;
    color: var(--text-dim);
}

/* ============================================
   BOTTOM FOOTER
   ============================================ */

.bottom-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--footer-height);
    background: linear-gradient(0deg, var(--deep-space) 0%, rgba(10, 14, 23, 0.95) 100%);
    border-top: 1px solid var(--panel-border);
    z-index: 100;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 var(--content-padding);
    max-width: 1200px;
    margin: 0 auto;
}

.coordinates {
    display: flex;
    align-items: center;
    gap: 8px;
}

.coord-icon {
    width: 16px;
    height: 16px;
    color: var(--text-dim);
}

.coord-text {
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--text-secondary);
    letter-spacing: 0.05em;
}

.device-info {
    display: flex;
    align-items: center;
}

.device-text {
    font-family: var(--font-mono);
    font-size: 0.6rem;
    color: var(--text-dim);
    letter-spacing: 0.08em;
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */

.toast-container {
    position: fixed;
    bottom: calc(var(--footer-height) + 16px);
    left: 16px;
    right: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    z-index: 200;
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background: rgba(19, 25, 38, 0.95);
    border: 1px solid #1e2a3a;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    animation: toastIn 0.3s ease;
    pointer-events: auto;
    max-width: 300px;
}

.toast.removing {
    animation: toastOut 0.3s ease forwards;
}

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

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

.toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.toast.success .toast-icon {
    color: var(--signal-green);
}

.toast.error .toast-icon {
    color: var(--alert-red);
}

.toast.info .toast-icon {
    color: var(--signal-cyan);
}

.toast.anomaly .toast-icon {
    color: var(--signal-purple);
    animation: anomalyPulse 0.5s ease infinite;
}

@keyframes anomalyPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.toast-message {
    font-size: 0.85rem;
    color: var(--text-primary);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.hidden {
    display: none !important;
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (min-width: 768px) {
    :root {
        --content-padding: 24px;
    }
    
    .sensor-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .encoding-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .log-entry {
        grid-template-columns: 80px 70px 1fr;
    }
}

@media (min-width: 1024px) {
    .main-content {
        max-width: 900px;
        margin-left: auto;
        margin-right: auto;
    }
}

/* PWA Safe Area */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    .bottom-footer {
        padding-bottom: env(safe-area-inset-bottom);
        height: calc(var(--footer-height) + env(safe-area-inset-bottom));
    }
    
    .main-content {
        margin-bottom: calc(var(--footer-height) + env(safe-area-inset-bottom));
    }
}