:root {
  /* -- LUCID BLUE (LIGHT THEME) DEFAULTS -- */
  --ease-out-cubic: cubic-bezier(0.215, 0.610, 0.355, 1);
  --ease-in-out-quad: cubic-bezier(0.455, 0.030, 0.515, 0.955);
  --bg-primary: #f5f7ff;
  --bg-gradient: radial-gradient(at top center, hsla(210, 100%, 90%, 0.4), transparent 50%),
               linear-gradient(160deg, hsla(270, 80%, 95%, 0.8) 0%, hsla(220, 90%, 95%, 0.8) 100%);
  --text-primary: #212121;
  --text-secondary: #5a5c7a;
  --glow-color: rgba(25, 118, 210, 0.5);
  --panel-bg: rgba(255, 255, 255, 0.6);
  --panel-border: rgba(200, 200, 255, 0.5);
  --input-bg: rgba(245, 247, 255, 0.9);
  --input-border: rgba(200, 200, 255, 0.7);
  --input-focus-border: #1976d2;
  --button-bg: linear-gradient(90deg, #1976d2, #0165FC);
  --button-hover-bg: linear-gradient(90deg, #0165FC, #1976d2);
  --particle-color: rgba(0, 0, 0, 0.5);
  --line-color: rgba(25, 118, 210, 0.25);
  /* Variables for the theme switcher */
  --color-tertiary: #ffffff;
  --color-card-bg: rgba(255, 255, 255, 0.5);
  --color-card-border: rgba(0, 0, 0, 0.1);
  --color-text-accent: #0d47a1;
}

body.theme-metallic-sky {
  /* -- METALLIC SKY (DARK THEME) OVERRIDES -- */
  --bg-primary: #02040a;
  --bg-gradient: radial-gradient(ellipse 80% 80% at 50% -20%, rgba(120, 119, 198, 0.3), rgba(255, 255, 255, 0));
  --text-primary: #e0e6f0;
  --text-secondary: #8a94a6;
  --glow-color: rgba(129, 212, 250, 0.8);
  --panel-bg: rgba(10, 15, 30, 0.5);
  --panel-border: rgba(120, 119, 198, 0.2);
  --input-bg: rgba(2, 4, 10, 0.7);
  --input-border: rgba(120, 119, 198, 0.3);
  --input-focus-border: #81d4fa;
  --button-bg: linear-gradient(90deg, #6a30ff, #8050ff);
  --button-hover-bg: linear-gradient(90deg, #8050ff, #6a30ff);
  --particle-color: rgba(255, 255, 255, 0.5);
  --line-color: rgba(129, 212, 250, 0.4);
  /* Variables for the theme switcher */
  --color-tertiary: #000000;
  --color-card-bg: rgba(26, 35, 126, 0.2);
  --color-card-border: rgba(92, 107, 192, 0.3);
  --color-text-accent: #e8eaf6;
}


/* --- Base Styles --- */
*, *::before, *::after { box-sizing: border-box; }

body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    background-image: var(--bg-gradient);
    background-attachment: fixed;
    overflow-x: hidden;
    transition: background-color 0.5s ease, color 0.5s ease;
    background-size: 300% 300%;
    animation: animated-gradient 20s ease infinite;
}

#contact-nexus {
    perspective: 1500px;
}

#constellation-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.glass-panel {
    background: var(--panel-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--panel-border);
    border-radius: 1rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.1), 0 0 20px var(--glow-color);
    transition: background 0.5s ease, border 0.5s ease, box-shadow 0.5s ease;
}

/* --- Animations --- */
@keyframes animated-gradient {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes slide-fade-in {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes container-enter {
    from {
        opacity: 0;
        transform: rotateX(-20deg) translateY(50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: rotateX(0) translateY(0) scale(1);
    }
}

@keyframes text-flicker-in-glow {
    0% { opacity: 0; text-shadow: none; }
    10% { opacity: 1; text-shadow: 0 0 10px var(--glow-color); }
    20% { opacity: 0.5; text-shadow: 0 0 5px var(--glow-color); }
    30% { opacity: 1; text-shadow: 0 0 20px var(--glow-color), 0 0 10px var(--glow-color); }
    40% { opacity: 0.3; text-shadow: none; }
    50% { opacity: 1; text-shadow: 0 0 15px var(--glow-color); }
    60% { opacity: 0.4; text-shadow: none; }
    70% { opacity: 1; text-shadow: 0 0 20px var(--glow-color); }
    80% { opacity: 0.5; text-shadow: 0 0 5px var(--glow-color); }
    90% { opacity: 1; text-shadow: 0 0 10px var(--glow-color); }
    100% { opacity: 1; text-shadow: 0 0 10px var(--glow-color); }
}

@keyframes border-glow {
    0% { box-shadow: 0 0 20px var(--glow-color), inset 0 0 10px var(--glow-color); }
    50% { box-shadow: 0 0 40px var(--glow-color), inset 0 0 20px var(--glow-color); }
    100% { box-shadow: 0 0 20px var(--glow-color), inset 0 0 10px var(--glow-color); }
}

.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: scale(0);
    animation: ripple-effect 0.6s linear;
    pointer-events: none;
}

@keyframes ripple-effect {
    to { transform: scale(4); opacity: 0; }
}

@keyframes wipe-in {
    to {
        clip-path: inset(0 0 0 0);
    }
}

@keyframes shine-effect {
    0% { background-position: 200% center; }
    100% { background-position: -200% center; }
}

/* --- Layout & Components --- */
.section-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    padding: 2rem;
}

.contact-form-container {
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    animation: container-enter 1s var(--ease-out-cubic) 0.2s backwards;
    position: relative;
    z-index: 1;
}

.contact-form-container h2 {
    font-family: 'Orbitron', sans-serif;
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    text-shadow: 0 0 10px var(--glow-color);
    min-height: 48px;
}

.contact-form-container h2 .letter {
    display: inline-block;
    opacity: 0;
    animation: text-flicker-in-glow 1.5s var(--ease-out-cubic) forwards;
    padding: 0 2px;
}

.form-group {
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: slide-fade-in 0.8s var(--ease-out-cubic) forwards;
}
.form-group:nth-child(1) { animation-delay: 0.8s; }
.form-group:nth-child(2) { animation-delay: 0.9s; }
.form-group:nth-child(3) { animation-delay: 1.0s; }
.form-group:nth-child(4) { animation-delay: 1.1s; }

.form-input {
    width: 100%;
    padding: 1rem;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 0.5rem;
    color: var(--text-primary);
    font-family: 'Roboto', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.form-input:focus {
    outline: none;
    border-color: var(--input-focus-border);
    box-shadow: 0 0 15px var(--glow-color);
    animation: border-glow 2s infinite;
}
.form-input::placeholder { color: var(--text-secondary); }
textarea.form-input { min-height: 120px; resize: vertical; }

.submit-btn {
    width: 100%;
    padding: 1rem;
    border: none;
    border-radius: 0.5rem;
    background: var(--button-bg);
    color: white;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.3s ease, visibility 0.3s;
    position: relative;
    overflow: hidden;
    opacity: 1;
    animation: slide-fade-in 0.8s var(--ease-out-cubic) 1.2s forwards;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2), 0 0 20px var(--glow-color);
}

body.theme-metallic-sky .submit-btn:hover {
    background: var(--button-hover-bg);
}


#form-success-message {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    margin-top: 1rem;
    background: linear-gradient(90deg, var(--input-focus-border), #333, var(--input-focus-border));
    background-size: 200% 200%;
    color: transparent;
    background-clip: text;
    -webkit-background-clip: text;
    opacity: 0;
    visibility: hidden;
    clip-path: inset(0 100% 0 0);
    transition: opacity 0.5s ease, visibility 0.5s;
}

#form-success-message.visible {
    opacity: 1;
    visibility: visible;
    animation: wipe-in 0.8s var(--ease-out-cubic) forwards, shine-effect 2s linear infinite 0.8s;
}

body.theme-metallic-sky #form-success-message {
    background: linear-gradient(90deg, var(--input-focus-border), #fff, var(--input-focus-border));
    background-size: 200% 200%;
}

/* --- THEME SWITCHER STYLES (Copied from main page) --- */
.theme-selector-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}
.theme-toggle {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    backdrop-filter: blur(5px);
    position: relative;
    z-index: 2;
    transition: transform 0.2s ease;
}
.theme-toggle:hover {
    transform: scale(1.1);
}
.theme-toggle svg {
    width: 24px;
    height: 24px;
    fill: var(--color-text-accent);
}
.theme-options {
    position: absolute;
    top: 60px;
    right: 0;
    width: 220px;
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    border-radius: 12px;
    padding: 0.5rem;
    backdrop-filter: blur(10px);
    opacity: 0;
    transform: translateY(-10px) scale(0.95);
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}
.theme-options.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}
.theme-option-btn {
    background-color: transparent;
    border: none;
    color: var(--text-primary);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
    transition: background-color 0.2s ease;
}
.theme-option-btn:hover {
    background-color: rgba(0, 0, 0, 0.1);
}
body.theme-metallic-sky .theme-option-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}
.theme-swatch {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    border: 2px solid var(--color-card-border);
    flex-shrink: 0;
}


/* --- Media Queries --- */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}
@media (max-width: 768px) {
    .section-container {
        padding: 1rem;
    }
    .contact-form-container h2 {
        font-size: 2.2rem;
    }
    .form-input::placeholder {
        font-size: 0.95rem;
    }
}