/* ===== MAIN CSS - Base Styles, Layout, Typography ===== */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #000000;
    background-color: #ffffff;
    transition: all 0.3s ease;
}

.dark body {
    color: #ffffff;
    background-color: #000000;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3rem;
    line-height: 1.1;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

/* Layout Utilities */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.section {
    padding: 5rem 0;
}

/* Grid System */
.grid {
    display: grid;
}

.grid-cols-1 {
    grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

@media (min-width: 768px) {
    .md\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .md\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (min-width: 1024px) {
    .lg\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .lg\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

/* Flexbox Utilities */
.flex {
    display: flex;
}

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

.items-center {
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

/* Spacing */
.gap-2 {
    gap: 0.5rem;
}

.gap-4 {
    gap: 1rem;
}

.gap-6 {
    gap: 1.5rem;
}

.gap-8 {
    gap: 2rem;
}

.gap-12 {
    gap: 3rem;
}

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

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

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

/* Font Weights */
.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 Sizes */
.text-sm {
    font-size: 0.875rem;
}

.text-base {
    font-size: 1rem;
}

.text-lg {
    font-size: 1.125rem;
}

.text-xl {
    font-size: 1.25rem;
}

.text-2xl {
    font-size: 1.5rem;
}

.text-3xl {
    font-size: 1.875rem;
}

.text-4xl {
    font-size: 2.25rem;
}

.text-5xl {
    font-size: 3rem;
}

/* Margins */
.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.mb-6 {
    margin-bottom: 1.5rem;
}

.mb-8 {
    margin-bottom: 2rem;
}

.mb-12 {
    margin-bottom: 3rem;
}

.mb-16 {
    margin-bottom: 4rem;
}

/* Padding */
.p-2 {
    padding: 0.5rem;
}

.p-4 {
    padding: 1rem;
}

.p-6 {
    padding: 1.5rem;
}

.p-8 {
    padding: 2rem;
}

.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-4 {
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.py-6 {
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
}

.py-8 {
    padding-top: 2rem;
    padding-bottom: 2rem;
}

.py-20 {
    padding-top: 5rem;
    padding-bottom: 5rem;
}

/* 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\:text-2xl {
        font-size: 1.5rem;
    }
    
    .md\:text-4xl {
        font-size: 2.25rem;
    }
    
    .md\:text-5xl {
        font-size: 3rem;
    }
    
    .md\:text-7xl {
        font-size: 4.5rem;
    }
    
    .md\:grid-cols-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .md\:grid-cols-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@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));
    }
}

/* Max Width Utilities */
.max-w-4xl {
    max-width: 56rem;
}

.max-w-7xl {
    max-width: 80rem;
}

/* Auto Margins */
.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

/* Position Utilities */
.relative {
    position: relative;
}

.absolute {
    position: absolute;
}

.fixed {
    position: fixed;
}

/* Z-index */
.z-10 {
    z-index: 10;
}

.z-40 {
    z-index: 40;
}

.z-50 {
    z-index: 50;
}

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

/* Min Height */
.min-h-screen {
    min-height: 100vh;
}

/* Width and Height */
.w-full {
    width: 100%;
}

.h-full {
    height: 100%;
}

/* Display */
.hidden {
    display: none;
}

.block {
    display: block;
}

.inline-block {
    display: inline-block;
}

.inline-flex {
    display: inline-flex;
}

/* Visibility */
.invisible {
    visibility: hidden;
}

.visible {
    visibility: visible;
}

/* Opacity */
.opacity-0 {
    opacity: 0;
}

.opacity-50 {
    opacity: 0.5;
}

.opacity-100 {
    opacity: 1;
}

/* Transform */
.scale-105 {
    transform: scale(1.05);
}

/* Transition */
.transition-all {
    transition-property: all;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

.transition-colors {
    transition-property: color, background-color, border-color, text-decoration-color, fill, stroke;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

.transition-transform {
    transition-property: transform;
    transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
    transition-duration: 150ms;
}

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

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

/* Hover States */
.hover\:bg-blue-700:hover {
    background-color: #1d4ed8;
}

.hover\:bg-gray-300:hover {
    background-color: #d1d5db;
}

.hover\:bg-gray-600:hover {
    background-color: #4b5563;
}

.hover\:text-blue-600:hover {
    color: #2563eb;
}

.hover\:text-blue-400:hover {
    color: #60a5fa;
}

.hover\:text-gray-900:hover {
    color: #111827;
}

.hover\:text-white:hover {
    color: #ffffff;
}

.hover\:shadow-xl:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.hover\:shadow-2xl:hover {
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.hover\:scale-105:hover {
    transform: scale(1.05);
}

/* Focus States */
.focus\:outline-none:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
}

.focus\:ring-2:focus {
    --tw-ring-offset-shadow: var(--tw-ring-inset) 0 0 0 var(--tw-ring-offset-width) var(--tw-ring-offset-color);
    --tw-ring-shadow: var(--tw-ring-inset) 0 0 0 calc(2px + var(--tw-ring-offset-width)) var(--tw-ring-color);
    box-shadow: var(--tw-ring-offset-shadow), var(--tw-ring-shadow), var(--tw-shadow, 0 0 #0000);
}

.focus\:ring-blue-500:focus {
    --tw-ring-color: #3b82f6;
}

.focus\:border-transparent:focus {
    border-color: transparent;
}

/* Dark Mode Support */
.dark .dark\:bg-gray-900 {
    background-color: #111827;
}

.dark .dark\:bg-gray-800 {
    background-color: #1f2937;
}

.dark .dark\:bg-gray-700 {
    background-color: #374151;
}

.dark .dark\:bg-gray-600 {
    background-color: #4b5563;
}

.dark .dark\:text-white {
    color: #ffffff;
}

.dark .dark\:text-gray-300 {
    color: #d1d5db;
}

.dark .dark\:text-gray-400 {
    color: #9ca3af;
}

.dark .dark\:text-blue-400 {
    color: #60a5fa;
}

.dark .dark\:border-gray-600 {
    border-color: #4b5563;
}

.dark .dark\:border-gray-700 {
    border-color: #374151;
}

/* Backdrop Blur */
.backdrop-blur-sm {
    backdrop-filter: blur(4px);
}

/* Background Opacity */
.bg-white\/90 {
    background-color: rgba(255, 255, 255, 0.9);
}

.dark .dark\:bg-gray-900\/90 {
    background-color: rgba(17, 24, 39, 0.9);
}