/* ==========================================================================
   CSS Variables & Design Tokens (Hybrid Desert Theme)
   ========================================================================== */
:root {
    /* Color Palette - Light Mode */
    --c-bg: #fafaf9;
    /* Warm off-white */
    --c-surface: #ffffff;
    --c-surface-hover: #f5f5f4;
    --c-border: #e7e5e4;

    --c-text-primary: #1c1917;
    --c-text-secondary: #57534e;
    --c-text-tertiary: #a8a29e;

    /* Brand Colors - Desert Sun to Deep Blue Gradient */
    --c-accent-solid: #f59e0b;
    /* Amber */
    --c-accent-hover: #d97706;
    --c-accent-gradient: linear-gradient(135deg, #f59e0b 0%, #0ea5e9 100%);
    --c-accent-glow: rgba(245, 158, 11, 0.4);

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing & Layout */
    --nav-height: 80px;
    --container-max: 1200px;
    --container-px: 2rem;

    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 30px var(--c-accent-glow);

    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    --transition-fast: 0.15s ease-out;
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Overrides (Deep Desert Night) */
.dark-theme {
    --c-bg: #0c0a09;
    --c-surface: #1c1917;
    --c-surface-hover: #292524;
    --c-border: #292524;

    --c-text-primary: #fafaf9;
    --c-text-secondary: #a8a29e;
    --c-text-tertiary: #57534e;

    --c-accent-solid: #fbbf24;
    --c-accent-hover: #fcd34d;
    --c-accent-gradient: linear-gradient(135deg, #fbbf24 0%, #38bdf8 100%);
    --c-accent-glow: rgba(251, 191, 36, 0.25);

    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.8);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--c-bg);
    color: var(--c-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color var(--transition-base), color var(--transition-base);
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--c-text-primary);
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

img,
svg {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    cursor: pointer;
    font-family: inherit;
    border: none;
    background: none;
}

/* Layout Utils */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-px);
}

.section {
    padding: 6rem 0;
}

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

.w-full {
    width: 100%;
}

.w-1\/2 {
    width: 50%;
}

.w-3\/4 {
    width: 75%;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.hidden {
    display: none !important;
}

/* Colors */
.accent {
    color: var(--c-accent-solid);
}

.text-gradient {
    background: var(--c-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--c-text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 3rem;
}

/* ==========================================================================
   Components
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    border-radius: var(--radius-full);
    font-weight: 500;
    font-size: 0.95rem;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--c-accent-gradient);
    color: #1c1917;
    /* Dark text for contrast against bright yellow/amber */
    font-weight: 600;
    box-shadow: 0 4px 14px 0 var(--c-accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px 0 var(--c-accent-glow);
    opacity: 0.9;
}

.btn-outline {
    background: transparent;
    color: var(--c-text-primary);
    border: 1px solid var(--c-border);
}

.btn-outline:hover {
    border-color: var(--c-accent-solid);
    color: var(--c-accent-solid);
    background: var(--c-accent-glow);
}

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
}

.badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    border-radius: var(--radius-full);
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    color: var(--c-accent-solid);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.glass-panel {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-lg);
}

.dark-theme .glass-panel {
    background: rgba(28, 25, 23, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--nav-height);
    background: rgba(var(--c-bg), 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: var(--c-surface);
    border-bottom: 1px solid var(--c-border);
    box-shadow: var(--shadow-sm);
    height: 70px;
}

.dark-theme .navbar {
    background: rgba(12, 10, 9, 0.7);
}

.dark-theme .navbar.scrolled {
    background: rgba(28, 25, 23, 0.9);
}

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

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-link {
    font-weight: 500;
    color: var(--c-text-secondary);
    font-size: 0.95rem;
    position: relative;
}

.nav-link:hover {
    color: var(--c-text-primary);
}

.nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.theme-toggle-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--c-text-secondary);
    background: var(--c-surface);
    border: 1px solid var(--c-border);
}

.theme-toggle-btn:hover {
    color: var(--c-text-primary);
    background: var(--c-surface-hover);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: var(--c-text-primary);
    transition: all 0.3s ease;
}

.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--c-bg);
    z-index: 999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    transition: all var(--transition-base);
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-nav-links {
    text-align: center;
    margin-bottom: 2rem;
}

.mobile-nav-links li {
    margin: 1.5rem 0;
}

.mobile-nav-link {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
}

.mobile-nav-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    width: 100%;
    max-width: 300px;
}

/* Hero */
.hero {
    position: relative;
    padding-top: calc(var(--nav-height) + 4rem);
    padding-bottom: 6rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-bg-glow {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translateX(-50%);
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, var(--c-accent-glow) 0%, rgba(0, 0, 0, 0) 70%);
    z-index: -1;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.6;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 4.5rem);
    letter-spacing: -1px;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    color: var(--c-text-secondary);
    margin-bottom: 2.5rem;
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-visual {
    perspective: 1000px;
}

.glass-card {
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    box-shadow: var(--shadow-lg), 0 0 0 1px inset rgba(255, 255, 255, 0.1);
    transform: rotateY(-10deg) rotateX(5deg);
    transition: transform 0.5s ease;
}

.dark-theme .glass-card {
    background: rgba(39, 39, 42, 0.4);
}

.glass-card:hover {
    transform: rotateY(0deg) rotateX(0deg) translateY(-10px);
}

.card-header {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--c-border);
    padding-bottom: 0.5rem;
}

.dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--c-border);
}

.dots span:nth-child(1) {
    background: #ef4444;
}

.dots span:nth-child(2) {
    background: #eab308;
}

.dots span:nth-child(3) {
    background: #22c55e;
}

.chart-mockup {
    display: flex;
    align-items: flex-end;
    gap: 1rem;
}

.chart-mockup .bar {
    flex: 1;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    position: relative;
    overflow: hidden;
}

.chart-mockup .bar::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.2) 0%, transparent 100%);
}

.line {
    height: 8px;
    background: var(--c-surface-hover);
    border-radius: var(--radius-full);
    margin-bottom: 0.5rem;
}

.dark-theme .line {
    background: var(--c-border);
}

/* Image fade mask for Hero visual */
.hero-image-fade {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    /* Feather edges by fading to transparent using radial gradient */
    -webkit-mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 1) 50%, rgba(0, 0, 0, 0) 100%);
    mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 1) 50%, rgba(0, 0, 0, 0) 100%);
    display: block;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
    transition: all var(--transition-base);
}

/* Testable Tech List */
.testable-tech-list {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    font-size: 1.125rem;
    font-weight: 500;
}

.testable-tech-list li {
    background: var(--c-surface);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--c-border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    box-shadow: var(--shadow-sm);
}

.icon-chip {
    width: 20px !important;
    height: 20px !important;
    min-width: 20px;
    min-height: 20px;
    max-width: 20px;
    max-height: 20px;
    flex-shrink: 0;
    object-fit: contain;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2.5rem;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), 0 0 20px var(--c-accent-glow);
}

.feature-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-lg);
    background: var(--c-accent-glow);
    color: var(--c-accent-solid);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.feature-desc {
    color: var(--c-text-secondary);
    font-size: 0.95rem;
}

/* Research Grid */
.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.research-item {
    padding: 1.5rem;
    background: var(--c-bg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--c-border);
    text-align: center;
    transition: all 0.2s ease;
}

.research-item:hover {
    border-color: var(--c-accent-solid);
}

.r-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.r-icon-img {
    width: 40px !important;
    height: 40px !important;
    min-width: 40px;
    min-height: 40px;
    max-width: 40px;
    max-height: 40px;
    object-fit: contain;
}

.research-item h4 {
    font-size: 1rem;
    color: var(--c-text-primary);
}

/* Charter Grid */
.charter-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
}

.principle-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-top: 2rem;
}

.principle-item {
    display: flex;
    gap: 1.5rem;
}

.p-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--c-accent-glow);
    color: var(--c-accent-solid);
    font-weight: 700;
    border-radius: 50%;
    flex-shrink: 0;
    font-family: var(--font-heading);
    font-size: 1.25rem;
}

.principle-item h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.principle-item p {
    color: var(--c-text-secondary);
    font-size: 1rem;
}

.info-box {
    border-left: 4px solid var(--c-accent-solid);
    padding: 2rem;
    margin-bottom: 2rem;
}

.info-box p {
    color: var(--c-text-secondary);
    margin-top: 1rem;
    font-size: 0.95rem;
}

/* Contact Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--c-text-primary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--c-border);
    background: transparent;
    color: var(--c-text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--c-accent-solid);
    box-shadow: 0 0 0 3px var(--c-accent-glow);
}

.dark-theme .form-group input,
.dark-theme .form-group textarea {
    background: rgba(0, 0, 0, 0.2);
}

.turnstile-wrap {
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    --turnstile-scale: 1;
    min-height: 65px;
}

.turnstile-wrap .cf-turnstile {
    display: inline-block;
    margin: 0 auto;
    width: 300px;
    max-width: none;
    transform: scale(var(--turnstile-scale));
    transform-origin: center top;
}

/* Footer */
.footer {
    border-top: 1px solid var(--c-border);
    padding-top: 4rem;
    background: var(--c-surface);
}

.footer-cta h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.footer-bottom {
    border-top: 1px solid var(--c-border);
    padding: 1.5rem 0;
    color: var(--c-text-tertiary);
    font-size: 0.875rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    color: var(--c-text-tertiary);
}

.social-links a:hover {
    color: var(--c-text-primary);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.fade-in-up {
    opacity: 0;
    animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.fade-in {
    opacity: 0;
    animation: fadeIn 1s ease forwards;
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }

    .hero-content {
        margin: 0 auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .charter-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

@media (max-width: 768px) {

    .nav-links,
    .nav-actions {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .mobile-nav-actions .theme-toggle-btn {
        display: none;
    }

    .section {
        padding: 4rem 0;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-cta {
        flex-direction: column;
        width: 100%;
    }

    .hero-cta .btn {
        width: 100%;
    }

    .footer-bottom .flex-between {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .turnstile-wrap {
        --turnstile-scale: 0.9;
        min-height: 60px;
    }
}

@media (max-width: 360px) {
    .turnstile-wrap {
        --turnstile-scale: 0.82;
        min-height: 56px;
    }
}

/* ==========================================================================
   Parametric Wire Background
   ========================================================================== */
:root {
    --wire: rgba(110, 200, 210, .16);
    --pulse: rgba(212, 169, 56, .62);
    --node: rgba(212, 169, 56, .26);
    --bgOpacity: .95;
}

#wire-bg {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: var(--bgOpacity);
    transform: translate3d(0, 0, 0);
}

.page-content {
    position: relative;
    z-index: 1;
}

#wire-bg .wire {
    fill: none;
    stroke: var(--wire);
    stroke-width: 1;
    vector-effect: non-scaling-stroke;
}

#wire-bg .pulse {
    fill: none;
    stroke: var(--pulse);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-dasharray: 6 22;
    opacity: 0;
    vector-effect: non-scaling-stroke;
}

#wire-bg .node {
    fill: var(--node);
}

#wire-bg.pulsing .pulse {
    opacity: 1;
    animation: flow var(--pulseDur, 2.2s) linear infinite;
}

@keyframes flow {
    to {
        stroke-dashoffset: -260;
    }
}

@media (prefers-reduced-motion: reduce) {
    #wire-bg.pulsing .pulse {
        animation: none;
        opacity: .5;
    }
}