/* ===== FONTS ===== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ZenvitalAI Landing Page - Complete Self-Contained Styles
 * All Tailwind classes implemented as native CSS
 * Zero external dependencies or build processes
 */

/* ===== CSS VARIABLES ===== */
:root {
    /* Zen Color Palette */
    --zen-50: #f0f9ff;
    --zen-100: #e0f2fe;
    --zen-200: #bae6fd;
    --zen-300: #7dd3fc;
    --zen-400: #38bdf8;
    --zen-500: #0ea5e9;
    --zen-600: #0284c7;
    --zen-700: #0369a1;
    --zen-800: #075985;
    --zen-900: #0c4a6e;
    
    /* Sage Color Palette */
    --sage-50: #f0fdfa;
    --sage-100: #ccfbf1;
    --sage-200: #99f6e4;
    --sage-300: #5eead4;
    --sage-400: #2dd4bf;
    --sage-500: #14b8a6;
    --sage-600: #0d9488;
    --sage-700: #0f766e;
    --sage-800: #115e59;
    --sage-900: #134e4a;
    
    /* Warm Accent */
    --warm-50: #fef7ed;
    --warm-100: #fed7aa;
    --warm-200: #fed7aa;
    --warm-300: #fdba74;
    --warm-400: #fb923c;
    --warm-500: #f97316;
    --warm-600: #ea580c;
    --warm-700: #c2410c;
    --warm-800: #9a3412;
    --warm-900: #7c2d12;
    
    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Typography */
    --font-mono: 'JetBrains Mono', 'Monaco', 'Menlo', monospace;
    --font-display: 'Space Grotesk', system-ui, sans-serif;
    --font-sans: 'Inter', system-ui, sans-serif;
}

/* ===== BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ===== UTILITY CLASSES (Tailwind Implementation) ===== */

/* Layout */
.relative { position: relative; }
.absolute { position: absolute; }
.sticky { position: sticky; }
.fixed { position: fixed; }
.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.top-0 { top: 0; }
.bottom-0 { bottom: 0; }
.left-0 { left: 0; }
.right-0 { right: 0; }
.z-10 { z-index: 10; }
.z-50 { z-index: 50; }

/* Display */
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.hidden { display: none; }

/* Flexbox */
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.flex-col { flex-direction: column; }

/* Grid */
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.col-span-2 { grid-column: span 2 / span 2; }

/* Spacing */
.m-0 { margin: 0; }
.mx-auto { margin-left: auto; margin-right: auto; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 0.75rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mb-12 { margin-bottom: 3rem; }
.mb-16 { margin-bottom: 4rem; }
.mb-20 { margin-bottom: 5rem; }
.mr-1 { margin-right: 0.25rem; }
.mr-2 { margin-right: 0.5rem; }
.mr-3 { margin-right: 0.75rem; }
.mt-1 { margin-top: 0.25rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.mt-12 { margin-top: 3rem; }
.mt-20 { margin-top: 5rem; }

.p-4 { padding: 1rem; }
.p-6 { padding: 1.5rem; }
.p-8 { padding: 2rem; }
.px-3 { padding-left: 0.75rem; padding-right: 0.75rem; }
.px-4 { padding-left: 1rem; padding-right: 1rem; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }
.py-1 { padding-top: 0.25rem; padding-bottom: 0.25rem; }
.py-2 { padding-top: 0.5rem; padding-bottom: 0.5rem; }
.py-3 { padding-top: 0.75rem; padding-bottom: 0.75rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-20 { padding-top: 5rem; padding-bottom: 5rem; }
.pt-2 { padding-top: 0.5rem; }
.pt-8 { padding-top: 2rem; }
.pb-3 { padding-bottom: 0.75rem; }

/* Sizing */
.w-1 { width: 0.25rem; }
.w-2 { width: 0.5rem; }
.w-3 { width: 0.75rem; }
.w-6 { width: 1.5rem; }
.w-8 { width: 2rem; }
.w-16 { width: 4rem; }
.w-20 { width: 5rem; }
.w-32 { width: 8rem; }
.w-60 { width: 15rem; }
.w-80 { width: 20rem; }
.h-1 { height: 0.25rem; }
.h-2 { height: 0.5rem; }
.h-3 { height: 0.75rem; }
.h-6 { height: 1.5rem; }
.h-8 { height: 2rem; }
.h-16 { height: 4rem; }
.h-20 { height: 5rem; }
.h-32 { height: 8rem; }
.h-60 { height: 15rem; }
.h-80 { height: 20rem; }

.max-w-lg { max-width: 32rem; }
.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }
.max-w-7xl { max-width: 80rem; }

.min-h-screen { min-height: 100vh; }

/* Typography */
.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

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

.text-xs { font-size: 0.75rem; line-height: 1rem; }
.text-sm { font-size: 0.875rem; line-height: 1.25rem; }
.text-base { font-size: 1rem; line-height: 1.5rem; }
.text-lg { font-size: 1.125rem; line-height: 1.75rem; }
.text-xl { font-size: 1.25rem; line-height: 1.75rem; }
.text-2xl { font-size: 1.5rem; line-height: 2rem; }
.text-4xl { font-size: 2.25rem; line-height: 2.5rem; }
.text-5xl { font-size: 3rem; line-height: 1; }
.text-6xl { font-size: 3.75rem; line-height: 1; }
.text-7xl { font-size: 4.5rem; line-height: 1; }

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

.leading-tight { line-height: 1.25; }
.leading-relaxed { line-height: 1.625; }

.tracking-tight { letter-spacing: -0.025em; }

/* Colors - Text */
.text-white { color: var(--white); }
.text-gray-400 { color: var(--gray-400); }
.text-gray-500 { color: var(--gray-500); }
.text-gray-600 { color: var(--gray-600); }
.text-gray-700 { color: var(--gray-700); }
.text-gray-800 { color: var(--gray-800); }
.text-zen-100 { color: var(--zen-100); }
.text-zen-200 { color: var(--zen-200); }
.text-zen-300 { color: var(--zen-300); }
.text-zen-600 { color: var(--zen-600); }
.text-zen-700 { color: var(--zen-700); }
.text-sage-500 { color: var(--sage-500); }
.text-sage-600 { color: var(--sage-600); }
.text-sage-700 { color: var(--sage-700); }
.text-warm-600 { color: var(--warm-600); }
.text-warm-700 { color: var(--warm-700); }

/* Colors - Background */
.bg-white { background-color: var(--white); }
.bg-zen-50 { background-color: var(--zen-50); }
.bg-zen-100 { background-color: var(--zen-100); }
.bg-zen-500 { background-color: var(--zen-500); }
.bg-zen-600 { background-color: var(--zen-600); }
.bg-zen-900 { background-color: var(--zen-900); }
.bg-sage-50 { background-color: var(--sage-50); }
.bg-sage-100 { background-color: var(--sage-100); }
.bg-sage-400 { background-color: var(--sage-400); }
.bg-warm-50 { background-color: var(--warm-50); }
.bg-warm-100 { background-color: var(--warm-100); }
.bg-warm-400 { background-color: var(--warm-400); }

/* Opacity */
.opacity-30 { opacity: 0.3; }
.opacity-35 { opacity: 0.35; }
.opacity-40 { opacity: 0.4; }
.opacity-50 { opacity: 0.5; }

/* Borders */
.border { border-width: 1px; }
.border-2 { border-width: 2px; }
.border-b { border-bottom-width: 1px; }
.border-t { border-top-width: 1px; }
.border-y { border-top-width: 1px; border-bottom-width: 1px; }

.border-gray-200 { border-color: var(--gray-200); }
.border-zen-200 { border-color: var(--zen-200); }
.border-zen-300 { border-color: var(--zen-300); }
.border-zen-500 { border-color: var(--zen-500); }
.border-zen-800 { border-color: var(--zen-800); }
.border-sage-200 { border-color: var(--sage-200); }
.border-warm-200 { border-color: var(--warm-200); }
.border-white { border-color: var(--white); }

.rounded-lg { border-radius: 0.5rem; }
.rounded-xl { border-radius: 0.75rem; }
.rounded-2xl { border-radius: 1rem; }
.rounded-3xl { border-radius: 1.5rem; }
.rounded-full { border-radius: 9999px; }

/* Shadows */
.shadow-sm { box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1); }
.shadow-xl { box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1); }
.shadow-2xl { box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25); }

/* Gaps */
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }
.gap-12 { gap: 3rem; }
.gap-16 { gap: 4rem; }

.space-x-4 > * + * { margin-left: 1rem; }
.space-x-6 > * + * { margin-left: 1.5rem; }
.space-x-8 > * + * { margin-left: 2rem; }
.space-y-1 > * + * { margin-top: 0.25rem; }
.space-y-2 > * + * { margin-top: 0.5rem; }
.space-y-3 > * + * { margin-top: 0.75rem; }
.space-y-4 > * + * { margin-top: 1rem; }

/* Overflow */
.overflow-hidden { overflow: hidden; }
.overflow-x-hidden { overflow-x: hidden; }

/* Pointer Events */
.pointer-events-none { pointer-events: none; }

/* ===== BACKGROUND GRADIENTS ===== */
.bg-gradient-to-br {
    background-image: linear-gradient(to bottom right, var(--zen-50), var(--warm-50), var(--sage-50));
}

.bg-gradient-to-r {
    background-image: linear-gradient(to right, var(--zen-500), var(--sage-500));
}

.bg-gradient-to-b {
    background-image: linear-gradient(to bottom, var(--sage-50), var(--zen-50));
}

/* Background transparency */
.bg-white\/60 { background-color: rgba(255, 255, 255, 0.6); }
.bg-white\/70 { background-color: rgba(255, 255, 255, 0.7); }
.bg-white\/80 { background-color: rgba(255, 255, 255, 0.8); }
.bg-white\/90 { background-color: rgba(255, 255, 255, 0.9); }
.bg-white\/50 { background-color: rgba(255, 255, 255, 0.5); }

/* Backdrop filters */
.backdrop-blur-xl { backdrop-filter: blur(24px); }
.backdrop-blur-lg { backdrop-filter: blur(16px); }

/* ===== TEXT GRADIENTS ===== */
.bg-clip-text { 
    background-clip: text;
    -webkit-background-clip: text;
}

.text-transparent { color: transparent; }

/* ===== HOVER STATES ===== */
.hover\:text-zen-600:hover { color: var(--zen-600); }
.hover\:text-zen-800:hover { color: var(--zen-800); }
.hover\:text-white:hover { color: var(--white); }
.hover\:bg-zen-50:hover { background-color: var(--zen-50); }
.hover\:bg-zen-600:hover { background-color: var(--zen-600); }
.hover\:bg-white:hover { background-color: var(--white); }
.hover\:border-zen-500:hover { border-color: var(--zen-500); }

/* Hover shadows */
.hover\:shadow-lg:hover { box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1); }
.hover\:shadow-2xl:hover { box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25); }

/* Hover transforms */
.hover\:-translate-y-0\.5:hover { transform: translateY(-0.125rem); }
.hover\:-translate-y-1:hover { transform: translateY(-0.25rem); }

/* ===== TRANSITIONS ===== */
.transition-all { transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1); }
.transition-colors { transition-property: color, background-color, border-color, text-decoration-color, fill, stroke; }
.transition-transform { transition-property: transform; }

.duration-200 { transition-duration: 200ms; }
.duration-300 { transition-duration: 300ms; }
.duration-500 { transition-duration: 500ms; }

/* ===== TRANSFORMS ===== */
.transform { transform: translateX(0) translateY(0) rotate(0) skewX(0) skewY(0) scaleX(1) scaleY(1); }
.translate-x-full { transform: translateX(100%); }

/* ===== GROUP STYLES ===== */
.group:hover .group-hover\:translate-x-0 { transform: translateX(0); }

/* ===== ANIMATIONS ===== */
@keyframes breathe {
    0%, 100% { 
        transform: scale(1);
        opacity: 1;
    }
    50% { 
        transform: scale(1.05);
        opacity: 0.9;
    }
}

@keyframes pulse-soft {
    0%, 100% { 
        opacity: 1;
    }
    50% { 
        opacity: 0.8;
    }
}

@keyframes fade-in-zen {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.animate-breathe { animation: breathe 3s ease-in-out infinite; }
.animate-pulse-soft { animation: pulse-soft 2s ease-in-out infinite; }
.animate-fade-in-zen { animation: fade-in-zen 1s ease-out; }
.animate-float-gentle { animation: float-gentle 6s ease-in-out infinite; }

/* ===== RESPONSIVE DESIGN ===== */
@media (min-width: 640px) {
    .sm\:px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
    .sm\:flex-row { flex-direction: row; }
}

@media (min-width: 768px) {
    .md\:hidden { display: none; }
    .md\:flex { display: flex; }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .md\:flex-row { flex-direction: row; }
    .md\:mb-0 { margin-bottom: 0; }
}

@media (min-width: 1024px) {
    .lg\:px-8 { padding-left: 2rem; padding-right: 2rem; }
    .lg\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
    .lg\:text-left { text-align: left; }
    .lg\:text-7xl { font-size: 4.5rem; line-height: 1; }
    .lg\:justify-start { justify-content: flex-start; }
}

/* ===== SPECIAL COMPONENTS ===== */

/* Zen Dashboard specific styles */
.zen-dashboard {
    transition: all 0.3s ease;
}

.zen-dashboard:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 60px rgba(14, 165, 233, 0.15);
}

/* Step containers with hover effects */
.step-container {
    transition: all 0.3s ease;
}

.step-number {
    transition: transform 0.3s ease;
}

/* Floating wellness particles */
.zen-particles .particle {
    animation: float-gentle 8s ease-in-out infinite;
}

/* Custom background patterns */
.bg-gradient-to-r.from-zen-500.to-sage-500 {
    background-image: linear-gradient(to right, var(--zen-500), var(--sage-500));
}

.bg-gradient-to-r.from-sage-500.to-zen-500 {
    background-image: linear-gradient(to right, var(--sage-500), var(--zen-500));
}

.bg-gradient-to-r.from-zen-500.via-sage-500.to-zen-600 {
    background-image: linear-gradient(to right, var(--zen-500), var(--sage-500), var(--zen-600));
}

.bg-gradient-to-r.from-zen-500.to-warm-500 {
    background-image: linear-gradient(to right, var(--zen-500), var(--warm-500));
}

.bg-gradient-to-r.from-sage-50.to-zen-50 {
    background-image: linear-gradient(to right, var(--sage-50), var(--zen-50));
}

.bg-gradient-to-br.from-zen-400.to-sage-400 {
    background-image: linear-gradient(to bottom right, var(--zen-400), var(--sage-400));
}

.bg-gradient-to-br.from-zen-500.to-sage-500 {
    background-image: linear-gradient(to bottom right, var(--zen-500), var(--sage-500));
}

.bg-gradient-to-br.from-sage-500.to-zen-500 {
    background-image: linear-gradient(to bottom right, var(--sage-500), var(--zen-500));
}

.bg-gradient-to-br.from-zen-500.to-warm-500 {
    background-image: linear-gradient(to bottom right, var(--zen-500), var(--warm-500));
}

.bg-gradient-to-br.from-warm-500.to-zen-500 {
    background-image: linear-gradient(to bottom right, var(--warm-500), var(--zen-500));
}

.bg-gradient-to-br.from-warm-500.to-sage-500 {
    background-image: linear-gradient(to bottom right, var(--warm-500), var(--sage-500));
}

/* Shadow with colors */
.shadow-zen-500\/10 {
    box-shadow: 0 25px 50px -12px rgba(14, 165, 233, 0.1);
}

.shadow-zen-500\/30 {
    box-shadow: 0 20px 25px -5px rgba(14, 165, 233, 0.3), 0 8px 10px -6px rgba(14, 165, 233, 0.3);
}

.hover\:shadow-zen-500\/30:hover {
    box-shadow: 0 20px 25px -5px rgba(14, 165, 233, 0.3), 0 8px 10px -6px rgba(14, 165, 233, 0.3);
}

/* Advanced positioning */
.-top-6 { top: -1.5rem; }
.-right-6 { right: -1.5rem; }
.-bottom-6 { bottom: -1.5rem; }
.-left-6 { left: -1.5rem; }
.-top-40 { top: -10rem; }
.-right-40 { right: -10rem; }
.-bottom-40 { bottom: -10rem; }
.-left-40 { left: -10rem; }

/* White with opacity backgrounds */
.bg-white\/10 { background-color: rgba(255, 255, 255, 0.1); }
.bg-white\/5 { background-color: rgba(255, 255, 255, 0.05); }

/* Zen-specific colors */
.bg-zen-300 { background-color: var(--zen-300); }
.bg-sage-300 { background-color: var(--sage-300); }
.bg-sage-400 { background-color: var(--sage-400); }

/* ===== MOBILE RESPONSIVE TWEAKS ===== */
@media (max-width: 768px) {
    .text-6xl { font-size: 3rem; line-height: 1; }
    .text-7xl { font-size: 3.5rem; line-height: 1; }
    .text-5xl { font-size: 2.5rem; line-height: 1; }
    
    .py-20 { padding-top: 3rem; padding-bottom: 3rem; }
    .mb-16 { margin-bottom: 2rem; }
    .mb-12 { margin-bottom: 2rem; }
    
    .gap-12 { gap: 2rem; }
    .gap-16 { gap: 2rem; }
}

@media (max-width: 480px) {
    .px-4 { padding-left: 1rem; padding-right: 1rem; }
    .px-8 { padding-left: 1.5rem; padding-right: 1.5rem; }
    
    .text-6xl { font-size: 2.5rem; line-height: 1; }
    .text-5xl { font-size: 2rem; line-height: 1; }
    .text-xl { font-size: 1.125rem; line-height: 1.5; }
    
    .zen-dashboard { padding: 1rem; }
    .p-8 { padding: 1rem; }
}