/* ========================================
   BASE STYLES - Global Typography & Elements
   ======================================== */

body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    font-weight: var(--weight-regular);
    line-height: var(--leading-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

/* ===== TYPOGRAPHY ===== */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: var(--weight-bold);
    line-height: var(--leading-tight);
    letter-spacing: var(--tracking-tight);
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

h1 {
    font-size: var(--text-5xl);
    font-weight: var(--weight-black);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: var(--text-4xl);
    font-weight: var(--weight-bold);
}

h3 {
    font-size: var(--text-3xl);
}

h4 {
    font-size: var(--text-2xl);
}

h5 {
    font-size: var(--text-xl);
}

h6 {
    font-size: var(--text-lg);
}

p {
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
}

strong {
    font-weight: var(--weight-bold);
    color: var(--color-text-primary);
}

em {
    font-style: italic;
}

/* ===== LINKS ===== */

a {
    color: var(--color-accent-primary);
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-brand-cyan);
}

a:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* ===== SELECTION ===== */

::selection {
    background-color: var(--color-accent-primary);
    color: var(--color-text-inverse);
}

::-moz-selection {
    background-color: var(--color-accent-primary);
    color: var(--color-text-inverse);
}

/* ===== SCROLLBAR ===== */

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-accent-primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-brand-cyan);
}

/* ===== FOCUS STATES ===== */

*:focus {
    outline: none;
}

*:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}

/* ===== CONTAINER ===== */

.container {
    width: 100%;
    max-width: var(--container-2xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
}

@media (min-width: 768px) {
    .container {
        padding-left: var(--space-2xl);
        padding-right: var(--space-2xl);
    }
}

/* ===== SECTIONS ===== */

section {
    padding-top: var(--section-padding-mobile);
    padding-bottom: var(--section-padding-mobile);
    position: relative;
}

@media (min-width: 768px) {
    section {
        padding-top: var(--section-padding-desktop);
        padding-bottom: var(--section-padding-desktop);
    }
}

/* ===== UTILITIES ===== */

/* Screen reader only */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Skip to main content link */
.skip-to-main {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent-primary);
    color: var(--color-text-inverse);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: var(--weight-bold);
    z-index: var(--z-tooltip);
    transition: top var(--transition-fast);
}

.skip-to-main:focus {
    top: var(--space-md);
}

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

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

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

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

.block {
    display: block;
}

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

.flex {
    display: flex;
}

.grid {
    display: grid;
}

/* Fade in animation */
@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: 0.6;
    }
}

@keyframes glow {

    0%,
    100% {
        filter: drop-shadow(0 0 5px currentColor);
    }

    50% {
        filter: drop-shadow(0 0 20px currentColor);
    }
}

/* Animation classes */
.fade-in {
    animation: fadeIn 0.6s var(--ease-out) forwards;
    opacity: 0;
}

.fade-in-up {
    animation: fadeInUp 0.6s var(--ease-out) forwards;
    opacity: 0;
}

.slide-in-left {
    animation: slideInLeft 0.6s var(--ease-out) forwards;
    opacity: 0;
}

.slide-in-right {
    animation: slideInRight 0.6s var(--ease-out) forwards;
    opacity: 0;
}

/* Stagger delays */
.delay-100 {
    animation-delay: 0.1s;
}

.delay-200 {
    animation-delay: 0.2s;
}

.delay-300 {
    animation-delay: 0.3s;
}

.delay-400 {
    animation-delay: 0.4s;
}

.delay-500 {
    animation-delay: 0.5s;
}

.delay-600 {
    animation-delay: 0.6s;
}