/* ========================================
   CSS Reset & Base Styles
   ======================================== */

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

:root {
    /* Color Palette */
    --color-bg: #0a0a0f;
    --color-bg-secondary: #121218;
    --color-text: #ffffff;
    --color-text-secondary: #b8b8c8;

    /* Personal Path Colors - Green */
    --color-personal-primary: #00ff88;
    --color-personal-secondary: #00d9ff;
    --color-personal-glow: rgba(0, 255, 136, 0.5);

    /* Professional Path Colors - Cyan/Blue */
    --color-professional-primary: #06ffa5;
    --color-professional-secondary: #00b4d8;
    --color-professional-glow: rgba(6, 255, 165, 0.5);

    /* UI Colors */
    --color-accent: #7209b7;
    --color-glass-bg: rgba(255, 255, 255, 0.05);
    --color-glass-border: rgba(255, 255, 255, 0.1);

    /* Typography */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;

    /* Effects */
    --glow-radius: 40px;
    --transition-speed: 0.3s;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    overflow: hidden;
    width: 100vw;
    height: 100vh;
}

/* ========================================
   Canvas
   ======================================== */

#canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
    /* Allow clicks to pass through to UI elements */
}

/* ========================================
   Loading Screen
   ======================================== */

#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0a0f 0%, #1a0a2e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top: 4px solid var(--color-professional-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.loading-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(90deg, var(--color-professional-primary), var(--color-personal-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.loading-bar {
    width: 300px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
    margin: 0 auto;
}

.loading-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--color-professional-primary), var(--color-personal-primary));
    border-radius: 2px;
    transition: width 0.3s ease;
    box-shadow: 0 0 20px var(--color-professional-glow);
}

/* ========================================
   Loading Screen - Fullscreen Terminal
   ======================================== */

.terminal-fullscreen {
    width: 100vw;
    height: 100vh;
    background: #000000;
    color: #00ff00;
    font-family: 'Courier New', 'Consolas', monospace;
    font-size: 1rem;
    line-height: 1.6;
    padding: 2rem;
    overflow-y: auto;
    position: relative;
}

/* Matrix rain canvas */
#matrix-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 1;
    opacity: 0.3;
}

/* CRT Scanlines */
.terminal-fullscreen::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: repeating-linear-gradient(0deg,
            rgba(0, 0, 0, 0.15),
            rgba(0, 0, 0, 0.15) 1px,
            transparent 1px,
            transparent 2px);
    pointer-events: none;
    z-index: 2;
    animation: scanline 8s linear infinite;
}

@keyframes scanline {
    0% {
        transform: translateY(0);
    }

    100% {
        transform: translateY(10px);
    }
}

/* Screen flicker/glitch */
.terminal-fullscreen::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 255, 0, 0.02);
    pointer-events: none;
    z-index: 2;
    animation: flicker 0.15s infinite;
}

@keyframes flicker {

    0%,
    100% {
        opacity: 0.95;
    }

    50% {
        opacity: 1;
    }
}

.terminal-line {
    margin-bottom: 0.3rem;
    white-space: pre-wrap;
    position: relative;
    z-index: 3;
}

.terminal-line.glitch {
    animation: glitch 0.3s infinite;
}

@keyframes glitch {
    0% {
        transform: translateX(0);
    }

    20% {
        transform: translateX(-2px);
    }

    40% {
        transform: translateX(2px);
    }

    60% {
        transform: translateX(-1px);
    }

    80% {
        transform: translateX(1px);
    }

    100% {
        transform: translateX(0);
    }
}

.terminal-line.prompt {
    color: #00ff00;
}

.terminal-line.command {
    color: #00ff00;
    font-weight: bold;
    margin-top: 0.5rem;
    text-shadow: 0 0 5px rgba(0, 255, 0, 0.5);
}

.terminal-line.equation {
    color: #00ff00;
    padding-left: 2rem;
    font-size: 0.95rem;
}

.cursor-block {
    display: inline-block;
    width: 10px;
    height: 1.2em;
    background: #00ff00;
    animation: blinkBlock 1s infinite;
    vertical-align: middle;
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.8);
}

@keyframes blinkBlock {

    0%,
    49% {
        opacity: 1;
    }

    50%,
    100% {
        opacity: 0;
    }
}

/* Scrollbar for terminal */
.terminal-fullscreen::-webkit-scrollbar {
    width: 10px;
}

.terminal-fullscreen::-webkit-scrollbar-track {
    background: #000;
}

.terminal-fullscreen::-webkit-scrollbar-thumb {
    background: #00ff00;
    text-shadow: 0 0 5px rgba(0, 255, 0, 0.8);
}

/* ========================================
   Mobile Touch Controls
   ======================================== */

/* Hide mobile controls on desktop */
.mobile-only {
    display: none;
}

@media (max-width: 1024px),
(pointer: coarse) {
    .mobile-only {
        display: block;
    }
}

#mobile-controls {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 45;
}

/* Virtual Joystick (Left) */
.joystick-container {
    position: absolute;
    bottom: 40px;
    left: 40px;
    pointer-events: auto;
}

.joystick-base {
    width: 120px;
    height: 120px;
    background: rgba(0, 0, 0, 0.4);
    border: 2px solid rgba(0, 255, 0, 0.3);
    border-radius: 50%;
    position: relative;
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.2);
}

.joystick-stick {
    width: 50px;
    height: 50px;
    background: rgba(0, 255, 0, 0.6);
    border: 2px solid #00ff00;
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.8);
    transition: all 0.1s ease;
}

/* Action Buttons (Right) */
.mobile-buttons {
    position: absolute;
    bottom: 40px;
    right: 40px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    pointer-events: auto;
}

.mobile-btn {
    width: 70px;
    height: 70px;
    background: rgba(0, 0, 0, 0.6);
    border: 2px solid rgba(0, 255, 0, 0.4);
    border-radius: 50%;
    color: #00ff00;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.2);
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

.mobile-btn:active {
    background: rgba(0, 255, 0, 0.3);
    box-shadow: 0 0 25px rgba(0, 255, 0, 0.6);
    transform: scale(0.95);
}

.mobile-btn span {
    pointer-events: none;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .joystick-container {
        bottom: 20px;
        left: 20px;
    }

    .mobile-buttons {
        bottom: 20px;
        right: 20px;
    }

    .joystick-base {
        width: 100px;
        height: 100px;
    }

    .joystick-stick {
        width: 40px;
        height: 40px;
    }

    .mobile-btn {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
}

/* ========================================
   UI Container & Screens
   ======================================== */

#ui-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none;
}

.screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.5s ease, visibility 0.5s ease;
    pointer-events: none;
}

.screen.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* ========================================
   Entry Screen
   ======================================== */

.title-container {
    text-align: center;
    animation: fadeInUp 1s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.main-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-professional-primary), var(--color-personal-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 80px var(--color-professional-glow);
    letter-spacing: 2px;
}

.subtitle {
    font-size: clamp(1rem, 2vw, 1.5rem);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    font-weight: 300;
}

.enter-button {
    position: relative;
    padding: 1.2rem 3rem;
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text);
    background: var(--color-glass-bg);
    border: 2px solid var(--color-professional-primary);
    border-radius: 50px;
    cursor: pointer;
    overflow: hidden;
    transition: all var(--transition-speed) ease;
    backdrop-filter: blur(10px);
    pointer-events: auto;
}

.enter-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: var(--color-professional-primary);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    z-index: -1;
}

.enter-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 40px var(--color-professional-glow);
}

.enter-button:hover::before {
    width: 300%;
    height: 300%;
}

.button-text {
    position: relative;
    display: inline-block;
}

.welcome-message {
    margin-top: var(--spacing-xl);
    animation: fadeInUp 1s ease 0.8s both;
}

.welcome-text {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: var(--spacing-lg);
    color: var(--color-personal-primary);
}

.controls-hint {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    font-size: 1rem;
    font-weight: 300;
    color: var(--color-text-secondary);
}

.control-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.cockpit-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

.cockpit-frame {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 40px solid rgba(10, 10, 15, 0.8);
    box-shadow: inset 0 0 100px rgba(0, 255, 136, 0.1);
}

/* ========================================
   Arrow Navigation
   ======================================== */

.arrow-navigation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.nav-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    text-decoration: none;
    color: var(--color-text);
    pointer-events: auto;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    opacity: 0.2;
    z-index: 100;
}

.nav-arrow:hover {
    opacity: 0.5;
    transform: translateY(-50%) scale(1.1);
}

.left-arrow {
    left: var(--spacing-xl);
}

.right-arrow {
    right: var(--spacing-xl);
}

.arrow-icon {
    font-size: 4rem;
    font-weight: 300;
    text-shadow: 0 0 20px currentColor;
    animation: arrowPulse 2s ease-in-out infinite;
}

.left-arrow .arrow-icon {
    color: var(--color-personal-primary);
}

.right-arrow .arrow-icon {
    color: var(--color-professional-primary);
}

@keyframes arrowPulse {

    0%,
    100% {
        opacity: 0.7;
        transform: scale(1);
    }

    50% {
        opacity: 1;
        transform: scale(1.1);
    }
}

.arrow-label {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0;
    transition: opacity var(--transition-speed) ease;
}

.nav-arrow:hover .arrow-label {
    opacity: 1;
}

/* ========================================
   Profile Screens
   ======================================== */

.profile-screen {
    padding: var(--spacing-md);
    overflow-y: auto;
    align-items: flex-start;
}

.back-button {
    position: absolute;
    top: var(--spacing-md);
    left: var(--spacing-md);
    padding: 0.8rem 1.5rem;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text);
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    border-radius: 50px;
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: all var(--transition-speed) ease;
    pointer-events: auto;
}

.back-button:hover {
    transform: translateX(-5px);
    background: rgba(255, 255, 255, 0.1);
}

.profile-content {
    width: 100%;
    max-width: 1000px;
    margin: var(--spacing-xl) auto;
    margin-top: 5rem;
}

.profile-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: fadeIn 0.8s ease;
}

.physics-equations {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    margin: var(--spacing-lg) 0;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: var(--color-personal-primary);
    opacity: 0.7;
}

.equation {
    animation: fadeInEquation 0.5s ease forwards;
    opacity: 0;
}

.equation:nth-child(1) {
    animation-delay: 0.1s;
}

.equation:nth-child(2) {
    animation-delay: 0.2s;
}

.equation:nth-child(3) {
    animation-delay: 0.3s;
}

.equation:nth-child(4) {
    animation-delay: 0.4s;
}

.equation:nth-child(5) {
    animation-delay: 0.5s;
}

@keyframes fadeInEquation {
    to {
        opacity: 0.7;
    }
}

.progress-bar {
    width: 120px;
    height: 120px;
    margin: 0 auto var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    background: var(--color-glass-bg);
    border: 3px solid var(--color-glass-border);
    border-radius: 50%;
    backdrop-filter: blur(20px);
}

.personal-avatar {
    border-color: var(--color-personal-primary);
    box-shadow: 0 0 40px var(--color-personal-glow);
}

.professional-avatar {
    border-color: var(--color-professional-primary);
    box-shadow: 0 0 40px var(--color-professional-glow);
}

.profile-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--spacing-xs);
    font-weight: 700;
}

.profile-tagline {
    color: var(--color-text-secondary);
    font-size: 1.2rem;
    font-weight: 300;
}

.profile-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.info-card {
    padding: var(--spacing-md);
    background: var(--color-glass-bg);
    border: 1px solid var(--color-glass-border);
    border-radius: 15px;
    backdrop-filter: blur(20px);
    transition: all var(--transition-speed) ease;
    animation: fadeInUp 0.8s ease backwards;
}

.info-card:nth-child(1) {
    animation-delay: 0.1s;
}

.info-card:nth-child(2) {
    animation-delay: 0.2s;
}

.info-card:nth-child(3) {
    animation-delay: 0.3s;
}

.info-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

#personal-screen .card-title {
    color: var(--color-personal-primary);
}

#professional-screen .card-title {
    color: var(--color-professional-primary);
}

.card-text {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: 1rem;
}

.interests-list,
.projects-list {
    list-style: none;
    color: var(--color-text-secondary);
    line-height: 2;
}

.interests-list li,
.projects-list li {
    padding-left: var(--spacing-sm);
}

.experience-item {
    margin-bottom: var(--spacing-md);
}

.experience-role {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.experience-company {
    color: var(--color-professional-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-tag {
    padding: 0.5rem 1rem;
    background: rgba(6, 255, 165, 0.1);
    border: 1px solid var(--color-professional-primary);
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--color-professional-primary);
    font-weight: 500;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
    .paths-container {
        flex-direction: column;
        align-items: center;
    }

    .path-card {
        width: 100%;
        max-width: 400px;
    }

    .profile-cards {
        grid-template-columns: 1fr;
    }

    .back-button {
        top: var(--spacing-sm);
        left: var(--spacing-sm);
    }
}

/* ========================================
   Scrollbar Styling
   ======================================== */

.profile-screen::-webkit-scrollbar {
    width: 8px;
}

.profile-screen::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
}

.profile-screen::-webkit-scrollbar-thumb {
    background: var(--color-glass-border);
    border-radius: 4px;
}

.profile-screen::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.3);
}
/* ========================================
   HUD Enhancements
   ======================================== */

/* HUD Scan Line Effect */
.hud-scanline {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to bottom, 
        transparent,
        rgba(0, 255, 136, 0.6),
        transparent);
    pointer-events: none;
    z-index: 100;
    animation: hudScanlineMove 4s linear infinite;
    box-shadow: 0 0 15px rgba(0, 255, 136, 0.8);
}

@keyframes hudScanlineMove {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(100vh);
    }
}

/* HUD Corner Brackets */
.hud-corners {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 95;
}

.corner {
    position: absolute;
    width: 40px;
    height: 40px;
    border-color: rgba(0, 255, 136, 0.5);
    border-style: solid;
    transition: all 0.3s ease;
}

.corner-tl {
    top: 20px;
    left: 20px;
    border-width: 2px 0 0 2px;
}

.corner-tr {
    top: 20px;
    right: 20px;
    border-width: 2px 2px 0 0;
}

.corner-bl {
    bottom: 20px;
    left: 20px;
    border-width: 0 0 2px 2px;
}

.corner-br {
    bottom: 20px;
    right: 20px;
    border-width: 0 2px 2px 0;
}

/* Animated brackets when target locked */
.hud.target-locked .corner {
    border-color: rgba(0, 255, 136, 0.9);
    width: 60px;
    height: 60px;
    animation: bracketPulse 1s ease-in-out infinite;
}

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

/* Distance Indicator with Target Lock Effect */
.hud-distance {
    font-family: 'Orbitron', sans-serif !important;
    letter-spacing: 1px;
}

.hud-distance.hud-target-lock {
    color: #00ff88;
    animation: targetLockPulse 0.5s ease-in-out infinite;
    text-shadow: 0 0 10px rgba(0, 255, 136, 0.8);
}

@keyframes targetLockPulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.7;
        transform: scale(1.05);
    }
}

/* Screen Flicker Effect */
.hud::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 255, 136, 0.02);
    pointer-events: none;
    z-index: 90;
    animation: hudFlicker 3s infinite;
}

@keyframes hudFlicker {
    0%, 100% {
        opacity: 0.8;
    }
    50% {
        opacity: 1;
    }
    75% {
        opacity: 0.95;
    }
}


/* ========================================
   Deep Space Warning
   ======================================== */

.deep-space-warning {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 150;
    pointer-events: none;
    animation: warningPulse 1s ease-in-out infinite;
}

.deep-space-warning.hidden {
    display: none;
}

.warning-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    filter: drop-shadow(0 0 20px rgba(255, 0, 0, 0.8));
    animation: warningShake 0.5s ease-in-out infinite;
}

.warning-text {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    font-weight: 900;
    color: #ff0000;
    text-shadow: 
        0 0 10px rgba(255, 0, 0, 0.8),
        0 0 20px rgba(255, 0, 0, 0.6),
        0 0 30px rgba(255, 0, 0, 0.4);
    letter-spacing: 3px;
    margin-bottom: 0.5rem;
}

.warning-subtext {
    font-family: 'Orbitron', sans-serif;
    font-size: 1rem;
    color: #ff6666;
    text-shadow: 0 0 5px rgba(255, 0, 0, 0.5);
    letter-spacing: 2px;
}

@keyframes warningPulse {
    0%, 100% {
        opacity: 1;
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        opacity: 0.7;
        transform: translate(-50%, -50%) scale(1.05);
    }
}

@keyframes warningShake {
    0%, 100% {
        transform: translateX(0);
    }
    25% {
        transform: translateX(-5px);
    }
    75% {
        transform: translateX(5px);
    }
}

/* Red tint overlay when in deep space */
.hud.deep-space-mode::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, transparent 30%, rgba(255, 0, 0, 0.15) 100%);
    pointer-events: none;
    z-index: 89;
    animation: redPulse 2s ease-in-out infinite;
}

@keyframes redPulse {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 0.8;
    }
}


/* ========================================
   Terminal System Messages
   ======================================== */

.terminal-line.error {
    color: #ff3333;
    font-weight: bold;
    text-shadow: 0 0 5px rgba(255, 51, 51, 0.8);
    animation: errorBlink 0.3s ease-in-out;
}

.terminal-line.warning {
    color: #ffaa00;
    font-weight: bold;
    text-shadow: 0 0 5px rgba(255, 170, 0, 0.8);
}

.terminal-line.success {
    color: #00ff00;
    font-weight: bold;
    text-shadow: 0 0 5px rgba(0, 255, 0, 0.6);
}

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


/* Terminal Content Width Improvements */
.terminal-line.equation {
    padding-left: 2rem;
    font-size: 0.95rem;
    display: block;
    width: 100%;
    max-width: 90%;
}

/* Every 3rd equation aligns to the right */
.terminal-line.equation:nth-child(3n) {
    text-align: right;
    padding-left: 0;
    padding-right: 2rem;
}

/* Every 5th equation centers */
.terminal-line.equation:nth-child(5n) {
    text-align: center;
    padding-left: 0;
    padding-right: 0;
}

/* System messages span full width */
.terminal-line.error,
.terminal-line.warning,
.terminal-line.success {
    width: 100%;
    display: block;
    padding: 0.3rem 1rem;
    background: rgba(0, 0, 0, 0.3);
    border-left: 3px solid currentColor;
}

/* Command messages fill more space */
.terminal-line.command {
    width: 100%;
    max-width: 95%;
    display: block;
}


/* Warning Pulse Animation */
@keyframes warningPulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.warning-pulse {
    animation: warningPulse 1s infinite;
    font-weight: bold;
}