/**
 * 2in3T Theme - Main Stylesheet
 * 
 * Prefix: 2in3t-
 * All theme-specific classes use this prefix.
 */

/* ========================================
   CSS Variables / Design Tokens
   ======================================== */
:root {
    /* Colors */
    --2in3t-primary: #6366f1;
    --2in3t-primary-dark: #4f46e5;
    --2in3t-secondary: #ec4899;
    --2in3t-bg-dark: #0a0a0a;
    --2in3t-bg-dark-alt: #1a1a2e;
    --2in3t-text: #ffffff;
    --2in3t-text-muted: rgba(255, 255, 255, 0.7);
    --2in3t-border: rgba(255, 255, 255, 0.1);

    /* Typography */
    --2in3t-font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --2in3t-font-size-base: 1rem;
    --2in3t-line-height: 1.6;

    /* Spacing */
    --2in3t-spacing-xs: 0.25rem;
    --2in3t-spacing-sm: 0.5rem;
    --2in3t-spacing-md: 1rem;
    --2in3t-spacing-lg: 2rem;
    --2in3t-spacing-xl: 4rem;

    /* Transitions */
    --2in3t-transition: 0.3s ease;
    --2in3t-transition-fast: 0.15s ease;

    /* Border Radius */
    --2in3t-radius-sm: 4px;
    --2in3t-radius-md: 8px;
    --2in3t-radius-lg: 16px;
    --2in3t-radius-full: 100px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

.2in3t-body {
    font-family: var(--2in3t-font-family);
    font-size: var(--2in3t-font-size-base);
    line-height: var(--2in3t-line-height);
    color: var(--2in3t-text);
    background: var(--2in3t-bg-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.2in3t-app {
    min-height: 100vh;
}

/* ========================================
   Typography
   ======================================== */
.2in3t-heading-1 {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.2in3t-heading-2 {
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.2in3t-heading-3 {
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.4;
}

.2in3t-text-muted {
    color: var(--2in3t-text-muted);
}

/* ========================================
   Buttons
   ======================================== */
.2in3t-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--2in3t-spacing-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--2in3t-font-family);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    border: none;
    border-radius: var(--2in3t-radius-md);
    cursor: pointer;
    transition: all var(--2in3t-transition);
}

.2in3t-btn-primary {
    background: linear-gradient(135deg, var(--2in3t-primary), var(--2in3t-secondary));
    color: var(--2in3t-text);
}

.2in3t-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.3);
}

.2in3t-btn-outline {
    background: transparent;
    border: 1px solid var(--2in3t-border);
    color: var(--2in3t-text);
}

.2in3t-btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--2in3t-primary);
}

/* ========================================
   Form Elements
   ======================================== */
.2in3t-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--2in3t-font-family);
    font-size: 1rem;
    color: var(--2in3t-text);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--2in3t-border);
    border-radius: var(--2in3t-radius-md);
    transition: all var(--2in3t-transition);
}

.2in3t-input:focus {
    outline: none;
    border-color: var(--2in3t-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.2in3t-input::placeholder {
    color: var(--2in3t-text-muted);
}

/* ========================================
   Utilities
   ======================================== */
.2in3t-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--2in3t-spacing-lg);
}

.2in3t-glass {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid var(--2in3t-border);
}