/**
 * RESPIRO Design System - Base Styles
 */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: var(--leading-normal);
    color: var(--color-text);
    background-color: var(--color-bg);
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6, .serif {
    font-family: var(--font-serif);
    font-weight: 700;
    line-height: var(--leading-tight);
    color: var(--stone-100);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

@media (min-width: 768px) {
    h1 { font-size: var(--text-7xl); }
    h2 { font-size: var(--text-6xl); }
    h3 { font-size: var(--text-4xl); }
}

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

a {
    color: var(--color-primary-light);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--color-primary-hover);
}

strong, b {
    font-weight: 600;
}

em, i {
    font-style: italic;
}

small {
    font-size: var(--text-sm);
}

/* Lists */
ul, ol {
    list-style: none;
}

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

/* Form Elements */
input, button, textarea, select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: transparent;
}

input:focus, button:focus, textarea:focus, select:focus {
    outline: none;
}

/* Selection */
::selection {
    background-color: var(--color-primary-muted);
    color: var(--amber-100);
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--stone-900);
}

::-webkit-scrollbar-thumb {
    background: var(--stone-700);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--stone-600);
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--space-6);
    padding-right: var(--space-6);
}

.container-sm { max-width: var(--container-sm); }
.container-md { max-width: var(--container-md); }
.container-lg { max-width: var(--container-lg); }
.container-xl { max-width: var(--container-xl); }
.container-2xl { max-width: var(--container-2xl); }

/* 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: 0;
}

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

/* Page Wrapper */
.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.main-content {
    flex: 1;
    padding-top: var(--navbar-height);
}

/* Artisan Mask Effect */
.artisan-mask {
    mask-image: linear-gradient(to bottom, transparent, black 8%, black 92%, transparent),
                linear-gradient(to right, transparent, black 8%, black 92%, transparent);
    mask-composite: intersect;
    -webkit-mask-image: linear-gradient(to bottom, transparent, black 8%, black 92%, transparent),
                        linear-gradient(to right, transparent, black 8%, black 92%, transparent);
    -webkit-mask-composite: source-in;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.animate-fade-in {
    animation: fadeIn var(--transition-slow) ease-out;
}

.animate-slide-up {
    animation: slideInUp var(--transition-slow) ease-out;
}

.animate-slide-down {
    animation: slideInDown var(--transition-slow) ease-out;
}

.animate-scale-in {
    animation: scaleIn var(--transition-slow) ease-out;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-spin {
    animation: spin 1s linear infinite;
}