/* ==========================================
   XBAB Website - Vanilla CSS
   ========================================== */

/* CSS Variables / Design Tokens */
:root {
    /* Colors */
    --color-black: #0a0a0a;
    --color-dark: #121212;
    --color-gray: #2a2a2a;
    --color-light: #e5e5e5;
    --color-white: #ffffff;

    /* Gray scale */
    --gray-100: #f3f4f6;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;

    /* Accent colors */
    --color-green-400: #4ade80;
    --color-green-500: #22c55e;
    --color-red-500: #ef4444;
    --color-yellow-500: #eab308;
    --color-purple-400: #c084fc;
    --color-blue-400: #60a5fa;

    /* Fonts */
    --font-sans: "Inter", sans-serif;
    --font-mono: "JetBrains Mono", monospace;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;

    /* Container widths */
    --max-width-md: 28rem;
    --max-width-3xl: 48rem;
    --max-width-4xl: 56rem;
    --max-width-7xl: 80rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

/* ==========================================
   Animations
   ========================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes bounce6 {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-0.1em);
    }
}

@keyframes bounce7 {
    0%,
    100% {
        transform: translateY(-0.1em);
    }
    50% {
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes glow {
    0%,
    100% {
        box-shadow: 0 0 5px rgba(255, 255, 255, 0.1);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
    }
}

@keyframes borderGlow {
    0%,
    100% {
        border-color: rgba(255, 255, 255, 0.1);
    }
    50% {
        border-color: rgba(255, 255, 255, 0.3);
    }
}

/* Scroll-triggered animation classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition:
        opacity 0.6s ease,
        transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-delay-1 {
    transition-delay: 0.1s;
}
.animate-delay-2 {
    transition-delay: 0.2s;
}
.animate-delay-3 {
    transition-delay: 0.3s;
}
.animate-delay-4 {
    transition-delay: 0.4s;
}

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

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-black);
    color: var(--color-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.5;
}

::selection {
    background-color: var(--color-white);
    color: var(--color-black);
}

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

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-white);
    outline-offset: 2px;
}

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
    transition: all var(--transition-fast);
}

/* Enhanced cursor for interactive elements */
.btn,
.btn-buy,
.nav-link,
.nav-link-cta,
.spec-card,
.about-card {
    cursor: pointer;
}

table {
    border-collapse: collapse;
    width: 100%;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-black);
}

::-webkit-scrollbar-thumb {
    background: #333;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* ==========================================
   Layout Utilities
   ========================================== */

.container {
    max-width: var(--max-width-7xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-4);
    padding-right: var(--spacing-4);
}

@media (min-width: 640px) {
    .container {
        padding-left: var(--spacing-6);
        padding-right: var(--spacing-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding-left: var(--spacing-8);
        padding-right: var(--spacing-8);
    }
}

.container-sm {
    max-width: var(--max-width-3xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-4);
    padding-right: var(--spacing-4);
}

.container-md {
    max-width: var(--max-width-4xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-4);
    padding-right: var(--spacing-4);
}

@media (min-width: 640px) {
    .container-md {
        padding-left: var(--spacing-6);
        padding-right: var(--spacing-6);
    }
}

@media (min-width: 1024px) {
    .container-md {
        padding-left: var(--spacing-8);
        padding-right: var(--spacing-8);
    }
}

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

.nav {
    position: fixed;
    width: 100%;
    z-index: 50;
    background-color: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    animation: fadeIn 0.5s ease;
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 5rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    flex-shrink: 0;
}

.nav-logo {
    width: 3rem;
    height: 3rem;
}

.nav-logo svg {
    width: 100%;
    height: 100%;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.nav-brand-text {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.05em;
}

.nav-links {
    display: none;
    margin-left: var(--spacing-10);
    align-items: baseline;
    gap: var(--spacing-8);
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-link {
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-white);
    transition: width var(--transition-normal);
}

.nav-link:hover {
    color: var(--color-white);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link-cta {
    padding: var(--spacing-2) var(--spacing-4);
    border: 1px solid var(--color-white);
    color: var(--color-white);
    transition: all var(--transition-fast);
    background-color: transparent;
}

.nav-link-cta:hover {
    background-color: var(--color-white);
    color: var(--color-black);
}

.nav-mobile-toggle {
    display: flex;
    margin-right: -0.5rem;
    padding: var(--spacing-2);
    border-radius: 0.375rem;
    color: var(--gray-400);
    transition: all var(--transition-fast);
}

.nav-mobile-toggle:hover {
    color: var(--color-white);
    background-color: var(--gray-700);
}

@media (min-width: 768px) {
    .nav-mobile-toggle {
        display: none;
    }
}

.nav-mobile-toggle svg {
    width: 1.5rem;
    height: 1.5rem;
}

/* Mobile Menu */
.mobile-menu {
    display: none;
    background-color: var(--color-black);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu.active {
    display: block;
}

@media (min-width: 768px) {
    .mobile-menu {
        display: none !important;
    }
}

.mobile-menu-inner {
    padding: var(--spacing-2) var(--spacing-3);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
    font-family: var(--font-mono);
}

.mobile-menu-link {
    display: block;
    padding: var(--spacing-2) var(--spacing-3);
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-300);
    transition: color var(--transition-fast);
}

.mobile-menu-link:hover {
    color: var(--color-white);
}

.mobile-menu-link-cta {
    color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.1);
}

/* ==========================================
   Hero Section
   ========================================== */

.hero {
    position: relative;
    padding-top: 8rem;
    padding-bottom: 5rem;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

@media (min-width: 1024px) {
    .hero {
        padding-top: 12rem;
        padding-bottom: 8rem;
    }
}

/* Technical Grid Overlay */
.tech-grid {
    background-size: 40px 40px;
    background-image:
        linear-gradient(
            to right,
            rgba(255, 255, 255, 0.03) 1px,
            transparent 1px
        ),
        linear-gradient(
            to bottom,
            rgba(255, 255, 255, 0.03) 1px,
            transparent 1px
        );
}

.hero-inner {
    position: relative;
    z-index: 10;
    width: 100%;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-12);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.hero-status {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--gray-400);
    margin-bottom: var(--spacing-4);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.status-dot {
    width: 0.5rem;
    height: 0.5rem;
    background-color: var(--color-green-500);
    border-radius: 50%;
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
    box-shadow: 0 0 10px var(--color-green-500);
}

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

.hero-title {
    font-size: 3.75rem;
    font-weight: 700;
    letter-spacing: -0.05em;
    margin-bottom: var(--spacing-2);
    color: var(--color-white);
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 6rem;
    }
}

.hero-title-char {
    display: inline-block;
    color: var(--color-white);
}

.hero-title-6,
.hero-title-7 {
    transition: transform 0.3s ease;
}

.hero-title:hover .hero-title-6 {
    animation: bounce6 0.6s ease-in-out infinite;
}

.hero-title:hover .hero-title-7 {
    animation: bounce7 0.6s ease-in-out infinite;
}

.hero-tagline {
    font-size: 1.25rem;
    color: var(--gray-400);
    margin-bottom: var(--spacing-8);
    font-weight: 300;
    border-left: 2px solid var(--color-white);
    padding-left: var(--spacing-6);
}

@media (min-width: 768px) {
    .hero-tagline {
        font-size: 1.5rem;
    }
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-10);
    font-family: var(--font-mono);
}

.stat-value {
    display: block;
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-white);
    transition:
        transform var(--transition-fast),
        color var(--transition-fast);
}

.hero-stats > div:hover .stat-value {
    color: var(--color-green-400);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

@media (min-width: 640px) {
    .hero-actions {
        flex-direction: row;
    }
}

.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-4) var(--spacing-8);
    font-size: 1rem;
    font-weight: 700;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: var(--color-white);
    color: var(--color-black);
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn-primary::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition:
        width 0.4s ease,
        height 0.4s ease;
}

.btn-primary:hover {
    background-color: var(--gray-300);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.1);
}

.btn-primary:active::after {
    width: 200px;
    height: 200px;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-white);
    border: 1px solid var(--color-white);
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

/* Hero Illustration */
.hero-illustration {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: transform 0.3s ease;
}

.hero-svg {
    animation: float 6s ease-in-out infinite;
}

.hero-svg:hover {
    animation-play-state: paused;
}

.hero-illustration-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top right,
        var(--color-black),
        transparent,
        transparent
    );
    z-index: 10;
    pointer-events: none;
}

.hero-svg {
    width: 100%;
    max-width: 300px;
    height: auto;
    filter: drop-shadow(0 25px 25px rgba(0, 0, 0, 0.2));
    transition: filter var(--transition-normal);
}

.hero-svg:hover {
    filter: drop-shadow(0 30px 30px rgba(0, 0, 0, 0.3))
        drop-shadow(0 0 20px rgba(255, 255, 255, 0.1));
}

.mouse-outline {
    stroke-dasharray: 1000;
    stroke-dashoffset: 1000;
    animation: draw 2s ease-out forwards;
    transition: all var(--transition-normal);
}

.hero-svg:hover .mouse-outline {
    stroke: var(--color-white);
    filter: drop-shadow(0 0 8px rgba(255, 255, 255, 0.5));
}

.hero-svg:hover line,
.hero-svg:hover rect {
    stroke: rgba(255, 255, 255, 0.8);
    transition: stroke var(--transition-normal);
}

@keyframes draw {
    to {
        stroke-dashoffset: 0;
    }
}

.opacity-80 {
    opacity: 0.8;
}

.opacity-50 {
    opacity: 0.5;
}

.opacity-20 {
    opacity: 0.2;
}

/* ==========================================
   Specs Section
   ========================================== */

.specs-section {
    padding: var(--spacing-24) 0;
    background-color: var(--color-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.section-header {
    margin-bottom: var(--spacing-12);
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    position: relative;
    display: inline-block;
}

.section-title-underline {
    width: 4rem;
    height: 2px;
    background-color: var(--color-white);
    margin-top: var(--spacing-4);
}

.specs-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

@media (min-width: 768px) {
    .specs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .specs-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.spec-card {
    background-color: var(--color-dark);
    padding: var(--spacing-8);
}

.spec-card:hover {
    background-color: var(--color-gray);
}

.spec-card:hover .spec-description {
    color: var(--color-white);
}

.spec-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--gray-500);
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-2);
    transition: color var(--transition-fast);
}

.spec-card:hover .spec-label {
    color: var(--gray-400);
}

.spec-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-2);
    letter-spacing: -0.02em;
}

.spec-description {
    font-size: 0.875rem;
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

/* Specs Table */
.specs-table-wrapper {
    margin-top: var(--spacing-12);
    overflow-x: auto;
}

.specs-table {
    width: 100%;
    text-align: left;
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.specs-table tr {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.specs-table td {
    padding: var(--spacing-4) 0;
}

.specs-table td:first-child {
    color: var(--gray-500);
    width: 33%;
}

.specs-table td:last-child {
    color: var(--color-white);
}

/* ==========================================
   Engineering Section
   ========================================== */

.engineering-section {
    padding: var(--spacing-24) 0;
    background-image: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSI0IiBoZWlnaHQ9IjQiPgo8cmVjdCB3aWR0aD0iNCIgaGVpZ2h0PSI0IiBmaWxsPSIjMTIxMjEyIi8+CjxyZWN0IHdpZHRoPSIxIiBoZWlnaHQ9IjEiIGZpbGw9IiMxYTFhMWEiLz4KPC9zdmc+");
    background-repeat: repeat;
    position: relative;
}

.engineering-overlay {
    position: absolute;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.8);
}

.engineering-inner {
    position: relative;
    z-index: 10;
}

.engineering-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-16);
}

@media (min-width: 1024px) {
    .engineering-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.engineering-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.engineering-title {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-6);
}

.engineering-text {
    color: var(--gray-300);
    margin-bottom: var(--spacing-6);
    font-size: 1.125rem;
    line-height: 1.75;
}

.engineering-subtitle {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: var(--spacing-8);
    margin-bottom: var(--spacing-4);
    color: var(--color-white);
}

/* Code Block */
.code-block {
    background-color: var(--color-black);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--spacing-6);
    font-family: var(--font-mono);
    font-size: 0.75rem;
    overflow: hidden;
    border-radius: 2px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

@media (min-width: 768px) {
    .code-block {
        font-size: 0.875rem;
    }
}

.code-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding-bottom: var(--spacing-2);
}

.code-dot {
    width: 0.75rem;
    height: 0.75rem;
    border-radius: 50%;
}

.code-dot-red {
    background-color: var(--color-red-500);
}

.code-dot-yellow {
    background-color: var(--color-yellow-500);
}

.code-dot-green {
    background-color: var(--color-green-500);
}

.code-filename {
    color: var(--gray-500);
    margin-left: var(--spacing-2);
}

.code-block pre {
    color: var(--color-green-400);
    white-space: pre-wrap;
    margin: 0;
}

.code-purple {
    color: var(--color-purple-400);
}

.code-blue {
    color: var(--color-blue-400);
}

.code-gray {
    color: var(--gray-500);
}

.code-footer {
    margin-top: var(--spacing-4);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-4);
}

.code-footer p {
    margin-bottom: var(--spacing-2);
}

.code-footer p:first-child {
    color: var(--color-white);
}

.code-footer p:first-child::after {
    content: "▋";
    animation: blink 1s step-end infinite;
    margin-left: 2px;
    color: var(--color-green-400);
}

@keyframes blink {
    0%,
    50% {
        opacity: 1;
    }
    51%,
    100% {
        opacity: 0;
    }
}

.code-footer p:not(:first-child) {
    color: var(--gray-400);
}

/* ==========================================
   About Section
   ========================================== */

.about-section {
    padding: var(--spacing-20) 0;
    background-color: var(--color-black);
}

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

.about-title {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: var(--spacing-8);
}

.about-description {
    font-size: 1.25rem;
    color: var(--gray-300);
    margin-bottom: var(--spacing-12);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    text-align: left;
}

@media (min-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.about-card {
    padding: var(--spacing-6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.02);
    transition: all var(--transition-normal);
}

.about-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.2);
}

.about-card-title {
    font-weight: 700;
    font-size: 1.125rem;
    margin-bottom: var(--spacing-2);
    color: var(--color-white);
}

.about-card-text {
    color: var(--gray-400);
    font-size: 0.875rem;
}

/* ==========================================
   Buy Section
   ========================================== */

.buy-section {
    padding: var(--spacing-24) 0;
    background-color: var(--color-white);
    color: var(--color-black);
    text-align: center;
}

.buy-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-4);
    letter-spacing: -0.05em;
}

.buy-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-8);
    font-family: var(--font-mono);
}

.buy-card {
    background-color: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-8);
    border-radius: 0.5rem;
    margin-bottom: var(--spacing-8);
    max-width: var(--max-width-md);
    margin-left: auto;
    margin-right: auto;
    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal);
    border: 1px solid transparent;
}

.buy-card:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.buy-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--spacing-4);
    margin-bottom: var(--spacing-4);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.buy-card-header span:first-child {
    font-weight: 600;
    color: var(--gray-300);
}

.buy-card-header span:last-child {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-white);
}

.buy-features {
    font-weight: 700;
}

.buy-card-header span:last-child {
    font-family: var(--font-mono);
}

.buy-features {
    list-style: none;
    text-align: left;
    font-size: 0.875rem;
    color: var(--gray-400);
    margin-bottom: var(--spacing-6);
    font-family: var(--font-mono);
}

.buy-features li {
    margin-bottom: var(--spacing-2);
}

.btn-buy {
    display: block;
    width: 100%;
    padding: var(--spacing-4);
    background-color: var(--color-white);
    color: var(--color-black);
    font-weight: 700;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-buy::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(0, 0, 0, 0.1),
        transparent
    );
    transition: left 0.5s ease;
}

.btn-buy:hover {
    background-color: var(--gray-300);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.15);
}

.btn-buy:hover::before {
    left: 100%;
}

.btn-buy:active {
    transform: scale(0.98) translateY(0);
}

.buy-note {
    font-size: 0.75rem;
    color: var(--gray-500);
    margin-top: var(--spacing-4);
}

/* ==========================================
   Footer
   ========================================== */

.footer {
    background-color: var(--color-black);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--spacing-12) 0;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-4);
}

@media (min-width: 768px) {
    .footer-inner {
        flex-direction: row;
    }
}

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

@media (min-width: 768px) {
    .footer-brand {
        text-align: left;
    }
}

.footer-company {
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-2);
}

.footer-copyright {
    color: var(--gray-500);
    font-size: 0.875rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-6);
    font-size: 0.875rem;
    font-family: var(--font-mono);
    color: var(--gray-400);
}

.footer-link {
    transition: color var(--transition-fast);
    display: inline-block;
}

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

/* ==========================================
   Utility Classes
   ========================================== */

.text-white {
    color: var(--color-white);
}

.text-gray-300 {
    color: var(--gray-300);
}

.text-gray-400 {
    color: var(--gray-400);
}

.font-mono {
    font-family: var(--font-mono);
}

.font-bold {
    font-weight: 700;
}

strong {
    font-weight: 700;
}

/* Glitch effect on hover for logo text */
.glitch-hover:hover {
    text-shadow:
        2px 0 #fff,
        -2px 0 #666;
}

/* Hidden utility */
.hidden {
    display: none !important;
}

@media (min-width: 768px) {
    .md-hidden {
        display: none !important;
    }
}