/* ============================================
   VORTEX DIGITAL - CRITICAL CSS
   1. Design System (Variables, Base, Typography)
   2. Critical UI (Navbar, Hero Support)
   ============================================ */

/* ============================================
   DESIGN SYSTEM
   ============================================ */

/* === CSS VARIABLES === */
:root {
    /* Brand Colors */
    --neon-green: #B4FF39;
    --black: #000000;
    --white: #FFFFFF;

    /* Grayscale */
    --gray-900: #0a0a0a;
    --gray-800: #1a1a1a;
    --gray-700: #2a2a2a;
    --gray-600: #3a3a3a;
    --gray-500: #5a5a5a;
    --gray-400: #b0b0b0;
    --gray-300: #d4d4d4;
    --gray-200: #e4e4e4;
    --gray-100: #f4f4f4;

    /* Effects */
    --green-glow: rgba(180, 255, 57, 0.15);
    --green-glow-strong: rgba(180, 255, 57, 0.3);

    /* Spacing Scale (8px base) */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    --space-3xl: 6rem;
    --space-4xl: 8rem;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    /* Transitions */
    --transition-micro: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-standard: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
    --shadow-green: 0 0 20px var(--green-glow-strong);

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
}

/* === RESET & BASE === */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    background-color: var(--black);
    color: var(--white);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    padding-top: 80px;
    /* Account for fixed navbar */
}

/* === TYPOGRAPHY === */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--space-md);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
    letter-spacing: -0.01em;
}

h4 {
    font-size: 1.25rem;
    font-weight: 600;
}

p {
    margin-bottom: var(--space-md);
    font-size: 1rem;
    letter-spacing: 0.01em;
}

.text-large {
    font-size: 1.125rem;
    letter-spacing: 0.01em;
}

.text-small {
    font-size: 0.875rem;
}

.text-tiny {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

/* === UTILITY CLASSES === */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-wide {
    max-width: 1440px;
}

.container-narrow {
    max-width: 960px;
}

/* Spacing Utilities */
.mt-xs {
    margin-top: var(--space-xs);
}

.mt-sm {
    margin-top: var(--space-sm);
}

.mt-md {
    margin-top: var(--space-md);
}

.mt-lg {
    margin-top: var(--space-lg);
}

.mt-xl {
    margin-top: var(--space-xl);
}

.mt-2xl {
    margin-top: var(--space-2xl);
}

.mt-3xl {
    margin-top: var(--space-3xl);
}

.mb-xs {
    margin-bottom: var(--space-xs);
}

.mb-sm {
    margin-bottom: var(--space-sm);
}

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

.mb-lg {
    margin-bottom: var(--space-lg);
}

.mb-xl {
    margin-bottom: var(--space-xl);
}

.mb-2xl {
    margin-bottom: var(--space-2xl);
}

.mb-3xl {
    margin-bottom: var(--space-3xl);
}

.py-xs {
    padding-top: var(--space-xs);
    padding-bottom: var(--space-xs);
}

.py-sm {
    padding-top: var(--space-sm);
    padding-bottom: var(--space-sm);
}

.py-md {
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
}

.py-lg {
    padding-top: var(--space-lg);
    padding-bottom: var(--space-lg);
}

.py-xl {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

.py-2xl {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
}

.py-3xl {
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
}

/* Text Utilities */
.text-center {
    text-align: center;
}

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

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

.text-neon {
    color: var(--neon-green);
}

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

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

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

.font-semibold {
    font-weight: 600;
}

.font-medium {
    font-weight: 500;
}

/* === GRID SYSTEM === */
.grid {
    display: grid;
    gap: var(--space-lg);
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* === FLEX UTILITIES === */
.flex {
    display: flex;
}

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

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

.flex-col {
    flex-direction: column;
}

.gap-xs {
    gap: var(--space-xs);
}

.gap-sm {
    gap: var(--space-sm);
}

.gap-md {
    gap: var(--space-md);
}

.gap-lg {
    gap: var(--space-lg);
}

.gap-xl {
    gap: var(--space-xl);
}

/* === SECTION SPACING === */
section {
    padding: var(--space-3xl) 0;
}

@media (max-width: 768px) {
    section {
        padding: var(--space-2xl) 0;
    }
}

/* === ANIMATIONS (Optimized) === */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes glow {

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

    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
}

.fade-up {
    animation: fadeUp 0.6s ease-out forwards;
}

.fade-in {
    animation: fadeIn 0.4s ease-out forwards;
}

/* Scroll-triggered animations */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* === ACCESSIBILITY === */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--neon-green);
    color: var(--black);
    padding: var(--space-sm) var(--space-md);
    text-decoration: none;
    font-weight: 600;
    z-index: 9999;
}

.skip-link:focus {
    top: 0;
}

*:focus-visible {
    outline: 2px solid var(--neon-green);
    outline-offset: 4px;
}

/* === RESPONSIVE UTILITIES === */
@media (max-width: 1024px) {
    :root {
        --space-3xl: 4rem;
        --space-4xl: 6rem;
    }
}

@media (max-width: 768px) {
    :root {
        --space-2xl: 3rem;
        --space-3xl: 3rem;
        --space-4xl: 4rem;
    }

    .container {
        padding: 0 var(--space-md);
    }
}

@media (max-width: 480px) {
    :root {
        --space-xl: 2rem;
        --space-2xl: 2.5rem;
    }
}


/* ============================================
   CRITICAL NAVBAR & COMPONENTS
   ============================================ */

/* Navbar - Critical for first paint */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #1a1a1a;
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    max-width: 1440px;
    margin: 0 auto;
}

.navbar-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #FFFFFF;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.navbar-logo span {
    color: #B4FF39;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: 3rem;
    list-style: none;
}

.navbar-link {
    color: #FFFFFF;
    text-decoration: none;
    font-weight: 500;
}

.navbar-toggle {
    display: none;
}

@media (max-width: 768px) {
    .navbar-menu {
        display: none;
    }

    .navbar-toggle {
        display: flex;
    }
}

/* Loading state */
.loading {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid #2a2a2a;
    border-top-color: #B4FF39;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* WhatsApp float */
.whatsapp-float {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 999;
}

.whatsapp-float svg {
    width: 32px;
    height: 32px;
    fill: white;
}

/* ============================================
   HERO SUPPORT (Buttons & Badges)
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-family: inherit;
    transition: all var(--transition-micro);
}

.btn-primary {
    background-color: var(--neon-green);
    color: var(--black);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-lg), var(--shadow-green);
}

.btn-secondary {
    background-color: transparent;
    color: var(--neon-green);
    border-color: var(--neon-green);
}

.btn-secondary:hover {
    background-color: var(--green-glow);
    box-shadow: var(--shadow-green);
}

.btn-large {
    padding: var(--space-md) var(--space-xl);
    font-size: 1.125rem;
}

.btn-small {
    padding: var(--space-xs) var(--space-md);
    font-size: 0.875rem;
}

.badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    background-color: var(--green-glow);
    color: var(--neon-green);
    border: 1px solid var(--neon-green);
}