/**
 * VoxNexus AI - Global Styles
 * CSS Reset, Typography, Grid System, Utilities
 */

/* ========================================
   CSS Reset
   ======================================== */

*,
*::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);
    font-size: var(--text-base);
    font-weight: var(--font-regular);
    line-height: var(--leading-normal);
    color: var(--color-gray-900);
    background-color: var(--color-white);
    overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
    height: auto;
}

input,
button,
textarea,
select {
    font: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
    overflow-wrap: break-word;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

/* ========================================
   Typography
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: var(--font-bold);
    line-height: var(--leading-tight);
    color: var(--color-gray-900);
}

h1 {
    font-size: var(--text-5xl);
    font-weight: var(--font-extrabold);
    margin-bottom: var(--space-6);
}

h2 {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-5);
}

h3 {
    font-size: var(--text-3xl);
    margin-bottom: var(--space-4);
}

h4 {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-3);
}

h5 {
    font-size: var(--text-xl);
    margin-bottom: var(--space-3);
}

h6 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
}

p {
    margin-bottom: var(--space-4);
    color: var(--color-gray-700);
    line-height: var(--leading-relaxed);
}

.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   Container & Grid System
   ======================================== */

.container {
    width: 100%;
    max-width: var(--container-xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
}

.container-fluid {
    width: 100%;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin-left: calc(var(--space-4) * -1);
    margin-right: calc(var(--space-4) * -1);
}

.col {
    flex: 1;
    padding-left: var(--space-4);
    padding-right: var(--space-4);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-6);
}

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

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

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

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-cols-5 {
    grid-template-columns: repeat(5, 1fr);
}

.grid-cols-6 {
    grid-template-columns: repeat(6, 1fr);
}

/* ========================================
   Utility Classes
   ======================================== */

/* Spacing */
.mt-0 {
    margin-top: 0;
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-8 {
    margin-top: var(--space-8);
}

.mt-12 {
    margin-top: var(--space-12);
}

.mt-16 {
    margin-top: var(--space-16);
}

.mt-20 {
    margin-top: var(--space-20);
}

.mt-24 {
    margin-top: var(--space-24);
}

.mb-0 {
    margin-bottom: 0;
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-8 {
    margin-bottom: var(--space-8);
}

.mb-12 {
    margin-bottom: var(--space-12);
}

.mb-16 {
    margin-bottom: var(--space-16);
}

.mb-20 {
    margin-bottom: var(--space-20);
}

.mb-24 {
    margin-bottom: var(--space-24);
}

.py-8 {
    padding-top: var(--space-8);
    padding-bottom: var(--space-8);
}

.py-12 {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
}

.py-16 {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
}

.py-20 {
    padding-top: var(--space-20);
    padding-bottom: var(--space-20);
}

.py-24 {
    padding-top: var(--space-24);
    padding-bottom: var(--space-24);
}

/* Text Alignment */
.text-left {
    text-align: left;
}

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

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

/* Display */
.block {
    display: block;
}

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

.flex {
    display: flex;
}

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

.grid {
    display: grid;
}

.hidden {
    display: none;
}

/* Flexbox */
.flex-row {
    flex-direction: row;
}

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

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

.justify-start {
    justify-content: flex-start;
}

.justify-end {
    justify-content: flex-end;
}

.gap-4 {
    gap: var(--space-4);
}

.gap-6 {
    gap: var(--space-6);
}

.gap-8 {
    gap: var(--space-8);
}

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

.w-auto {
    width: auto;
}

/* Max Width */
.max-w-sm {
    max-width: var(--container-sm);
}

.max-w-md {
    max-width: var(--container-md);
}

.max-w-lg {
    max-width: var(--container-lg);
}

.max-w-xl {
    max-width: var(--container-xl);
}

.max-w-2xl {
    max-width: var(--container-2xl);
}

/* ========================================
   Sections
   ======================================== */

section {
    padding: var(--space-20) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-title h2 {
    font-size: var(--text-4xl);
    font-weight: var(--font-extrabold);
    margin-bottom: var(--space-4);
}

.section-title p {
    font-size: var(--text-lg);
    color: var(--color-gray-600);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   Animations
   ======================================== */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

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

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.animate-fade-in {
    animation: fadeIn 0.6s var(--animation-ease) forwards;
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s var(--animation-ease) forwards;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1024px) {
    h1 {
        font-size: var(--text-4xl);
    }

    h2 {
        font-size: var(--text-3xl);
    }

    h3 {
        font-size: var(--text-2xl);
    }

    section {
        padding: var(--space-16) 0;
    }

    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: var(--text-3xl);
    }

    h2 {
        font-size: var(--text-2xl);
    }

    section {
        padding: var(--space-12) 0;
    }

    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4,
    .grid-cols-5,
    .grid-cols-6 {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Lazy Loading
   ======================================== */

img[loading="lazy"] {
    opacity: 0;
    transition: opacity var(--transition-base);
}

img[loading="lazy"].loaded {
    opacity: 1;
}