/* ============================================
   R4-D2 | Aspiring Intelligence
   Modern Landing Page Styles
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-bg: #050508;
    --color-bg-elevated: #0a0a0f;
    --color-bg-card: #0d0d14;
    --color-surface: rgba(20, 20, 30, 0.6);

    --color-text-primary: #f0f0f5;
    --color-text-secondary: #a0a0b0;
    --color-text-muted: #606070;

    --color-accent: #8b1a1a;
    --color-accent-light: #b32828;
    --color-accent-glow: rgba(139, 26, 26, 0.4);
    --color-accent-subtle: rgba(139, 26, 26, 0.15);

    --color-border: rgba(255, 255, 255, 0.06);
    --color-border-accent: rgba(139, 26, 26, 0.3);

    /* Typography */
    --font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 10rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Borders */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Noise Overlay for texture */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: linear-gradient(to bottom, var(--color-bg) 0%, transparent 100%);
}

.nav-brand {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-text-primary);
}

.nav-cta {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: 0.625rem 1.25rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

.nav-cta:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-accent);
    background: var(--color-accent-subtle);
}

/* Main Content */
main {
    position: relative;
    z-index: 1;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-3xl) var(--space-lg) var(--space-xl);
    position: relative;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-xl);
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* Droid Animation */
.droid-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.droid-silhouette {
    position: relative;
    width: 280px;
    height: 260px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.droid-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--color-accent-glow) 0%, transparent 60%);
    border-radius: 50%;
    animation: pulse 4s ease-in-out infinite;
    filter: blur(40px);
}

.droid-glow-ring {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    border: 1px solid var(--color-border-accent);
    border-radius: 50%;
    animation: ringPulse 4s ease-in-out infinite;
    opacity: 0.5;
}

@keyframes pulse {
    0%, 100% { opacity: 0.4; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.7; transform: translate(-50%, -50%) scale(1.05); }
}

@keyframes ringPulse {
    0%, 100% { opacity: 0.3; transform: translate(-50%, -50%) scale(1); }
    50% { opacity: 0.6; transform: translate(-50%, -50%) scale(1.1); }
}

.droid-dome {
    width: 140px;
    height: 85px;
    background: linear-gradient(165deg,
        rgba(80, 80, 100, 0.3) 0%,
        rgba(40, 40, 50, 0.15) 50%,
        rgba(20, 20, 30, 0.1) 100%);
    border-radius: 50% 50% 0 0;
    position: relative;
    z-index: 2;
    border: 1px solid var(--color-border-accent);
    overflow: hidden;
}

.dome-highlight {
    position: absolute;
    top: 10%;
    left: 15%;
    width: 30%;
    height: 40%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 100%);
    border-radius: 50%;
}

.droid-body {
    width: 140px;
    height: 155px;
    background: linear-gradient(180deg,
        rgba(50, 50, 60, 0.25) 0%,
        rgba(30, 30, 40, 0.15) 100%);
    position: relative;
    z-index: 1;
    border-left: 1px solid var(--color-border-accent);
    border-right: 1px solid var(--color-border-accent);
    border-bottom: 1px solid var(--color-border-accent);
}

.body-panel {
    position: absolute;
    background: rgba(139, 26, 26, 0.08);
    border: 1px solid rgba(139, 26, 26, 0.15);
}

.panel-1 {
    top: 20px;
    left: 15px;
    width: 50px;
    height: 35px;
    border-radius: var(--radius-sm);
}

.panel-2 {
    top: 70px;
    right: 15px;
    width: 40px;
    height: 50px;
    border-radius: var(--radius-sm);
}

.panel-3 {
    bottom: 20px;
    left: 20px;
    width: 100px;
    height: 25px;
    border-radius: var(--radius-sm);
}

.droid-eye {
    position: absolute;
    top: 35px;
    left: 50%;
    transform: translateX(-50%);
    width: 38px;
    height: 38px;
    background: radial-gradient(circle,
        var(--color-accent-light) 0%,
        var(--color-accent) 40%,
        transparent 70%);
    border-radius: 50%;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: eyeGlow 3s ease-in-out infinite;
}

.eye-core {
    width: 12px;
    height: 12px;
    background: var(--color-accent-light);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--color-accent-light);
}

@keyframes eyeGlow {
    0%, 100% {
        box-shadow:
            0 0 20px var(--color-accent-glow),
            0 0 40px rgba(139, 26, 26, 0.2),
            inset 0 0 15px var(--color-accent-glow);
    }
    50% {
        box-shadow:
            0 0 30px var(--color-accent-glow),
            0 0 60px rgba(139, 26, 26, 0.3),
            inset 0 0 20px var(--color-accent-glow);
    }
}

.droid-indicator {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    z-index: 3;
}

.indicator-1 {
    top: 55px;
    left: calc(50% - 25px);
    animation: blink 2s ease-in-out infinite;
}

.indicator-2 {
    top: 55px;
    right: calc(50% - 25px);
    animation: blink 2s ease-in-out infinite 0.5s;
}

@keyframes blink {
    0%, 90%, 100% { opacity: 1; }
    95% { opacity: 0.3; }
}

/* Hero Content */
.hero-content {
    max-width: 560px;
}

.hero-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-accent-light);
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border-accent);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
    background: var(--color-accent-subtle);
}

.hero-title {
    margin-bottom: var(--space-md);
}

.title-main {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--color-text-primary);
    line-height: 1.1;
}

.title-divider {
    display: block;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    margin: var(--space-sm) 0;
}

.title-sub {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 300;
    letter-spacing: 0.2em;
    color: var(--color-text-secondary);
    text-transform: uppercase;
}

.hero-description {
    font-size: 1.125rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-lg);
}

.hero-description em {
    color: var(--color-accent-light);
    font-style: normal;
    font-weight: 500;
}

/* Form Styles */
.waitlist-form,
.cta-form {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.input-wrapper {
    position: relative;
    flex: 1;
}

.email-input {
    width: 100%;
    padding: 1rem 1.25rem;
    font-family: var(--font-body);
    font-size: 1rem;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    transition: var(--transition-base);
}

.email-input:focus {
    outline: none;
    border-color: var(--color-border-accent);
    box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

.email-input::placeholder {
    color: var(--color-text-muted);
}

.input-glow {
    position: absolute;
    inset: -1px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--color-accent-glow), transparent);
    opacity: 0;
    z-index: -1;
    transition: var(--transition-base);
}

.email-input:focus + .input-glow {
    opacity: 1;
}

.waitlist-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.75rem;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    border: none;
    color: var(--color-text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-base);
    white-space: nowrap;
}

.waitlist-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-accent-glow);
}

.waitlist-button:active {
    transform: translateY(0);
}

.button-arrow {
    transition: var(--transition-fast);
}

.waitlist-button:hover .button-arrow {
    transform: translateX(4px);
}

.form-note {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    animation: float 2s ease-in-out infinite;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-text-muted), transparent);
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* Section Styles */
section {
    padding: var(--space-3xl) var(--space-lg);
}

.section-container {
    max-width: 1000px;
    margin: 0 auto;
}

.section-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent-light);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

.section-description {
    font-size: 1.25rem;
    font-weight: 400;
    color: var(--color-text-secondary);
    line-height: 1.8;
    max-width: 700px;
}

/* Evolution Section */
.evolution {
    text-align: center;
    background: linear-gradient(180deg,
        var(--color-bg) 0%,
        var(--color-bg-elevated) 50%,
        var(--color-bg) 100%);
}

.evolution .section-description {
    margin: 0 auto;
}

/* Features Section */
.features {
    background: var(--color-bg);
}

.features .section-title {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.features .section-label {
    text-align: center;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.feature-card {
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-border-accent);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-subtle);
    border: 1px solid var(--color-border-accent);
    border-radius: var(--radius-md);
    color: var(--color-accent-light);
    margin-bottom: var(--space-md);
}

.feature-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.feature-description {
    font-size: 1rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-elevated) 100%);
}

.cta-card {
    text-align: center;
    padding: var(--space-2xl);
    background: linear-gradient(135deg,
        var(--color-bg-card) 0%,
        rgba(139, 26, 26, 0.05) 100%);
    border: 1px solid var(--color-border-accent);
    border-radius: var(--radius-lg);
}

.cta-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.cta-description {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.cta-form {
    max-width: 500px;
    margin: 0 auto;
    justify-content: center;
}

/* Footer */
.footer {
    padding: var(--space-xl) var(--space-lg);
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
}

.footer-container {
    max-width: 1000px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--color-text-primary);
}

.footer-tagline {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

.footer-links {
    display: flex;
    gap: var(--space-md);
}

.footer-link {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-text-secondary);
}

.footer-copyright {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-lg);
    }

    .droid-container {
        order: -1;
    }

    .hero-content {
        max-width: 100%;
    }

    .title-divider {
        margin: var(--space-sm) auto;
    }

    .waitlist-form,
    .cta-form {
        flex-direction: column;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }

    .waitlist-button {
        justify-content: center;
    }
}

@media (max-width: 640px) {
    :root {
        --space-lg: 2rem;
        --space-xl: 3rem;
        --space-2xl: 4rem;
        --space-3xl: 6rem;
    }

    .navbar {
        padding: var(--space-sm);
    }

    .nav-cta {
        padding: 0.5rem 1rem;
        font-size: 0.8125rem;
    }

    .hero {
        padding-top: 6rem;
    }

    .droid-silhouette {
        width: 220px;
        height: 200px;
    }

    .droid-dome {
        width: 110px;
        height: 70px;
    }

    .droid-body {
        width: 110px;
        height: 120px;
    }

    .droid-eye {
        width: 30px;
        height: 30px;
        top: 28px;
    }

    .eye-core {
        width: 10px;
        height: 10px;
    }

    .droid-glow {
        width: 250px;
        height: 250px;
    }

    .hero-badge {
        font-size: 0.6875rem;
        padding: 0.375rem 0.75rem;
    }

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

    .cta-card {
        padding: var(--space-xl) var(--space-md);
    }

    .scroll-indicator {
        display: none;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    html {
        scroll-behavior: auto;
    }
}

/* Focus Visible for Accessibility */
:focus-visible {
    outline: 2px solid var(--color-accent-light);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--color-accent);
    color: var(--color-text-primary);
}