:root {
    /* Modern Tech Color Palette */
    --primary: #0ea5e9;
    --primary-dark: #0c4a6e;
    --primary-light: #38bdf8;
    --secondary: #8b5cf6;
    --secondary-dark: #6d28d9;
    --accent: #f59e0b;
    --accent-bright: #fbbf24;
    --success: #10b981;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0ea5e9 0%, #8b5cf6 100%);
    --gradient-hero: linear-gradient(135deg, #0c4a6e 0%, #3730a3 50%, #1e1b4b 100%);
    --gradient-secondary: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
    --gradient-accent: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --gradient-success: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);

    /* Neutral Colors */
    --bg-dark: #0f172a;
    --bg-light: #f8fafc;
    --text-dark: #1e293b;
    --text-light: #ffffff;
    --text-muted: #64748b;
    --border-color: #e2e8f0;

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);

    /* Spacing (8px rhythm) */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-2xl: 64px;
    --space-3xl: 96px;

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

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-fast: 200ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-light);
    overflow-x: hidden;
}

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

h1 {
    font-size: clamp(2rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

h5 {
    font-size: 1.125rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: var(--space-sm);
    line-height: 1.8;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--accent);
}

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

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.container-wide {
    max-width: 1400px;
}

.container-narrow {
    max-width: 900px;
}

/* Section Spacing */
section {
    padding: var(--space-3xl) 0;
    position: relative;
}

section.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

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

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

.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);
}

.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);
}

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

.p-lg {
    padding: var(--space-lg);
}

.p-xl {
    padding: var(--space-xl);
}

/* 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-column {
    flex-direction: column;
}

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

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

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

/* Responsive */
@media (max-width: 768px) {
    :root {
        --space-3xl: 64px;
    }

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

    section {
        padding: var(--space-2xl) 0;
    }
}

@media (max-width: 480px) {
    :root {
        --space-3xl: 48px;
        --space-2xl: 32px;
    }
}

/* Extra small devices (320px and below) */
@media (max-width: 375px) {
    :root {
        --space-3xl: 40px;
        --space-2xl: 28px;
        --space-lg: 24px;
    }

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

    h1 {
        font-size: clamp(1.75rem, 8vw, 2.5rem);
    }

    h2 {
        font-size: clamp(1.5rem, 7vw, 2rem);
    }
}

/* Ensure no horizontal overflow on any device */
html,
body {
    max-width: 100%;
    overflow-x: hidden;
}

/* Improve touch targets for mobile */
@media (max-width: 768px) {

    a,
    button {
        min-height: 44px;
        min-width: 44px;
    }

    input,
    select,
    textarea {
        font-size: 16px;
        /* Prevents zoom on iOS */
    }
}