/* Reset and base styles */

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

html {
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.5;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Background layer with darkening overlay */
#background-layer {
    position: fixed;
    inset: 0;
    z-index: -1;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: background-image var(--transition-slow);
}

#background-layer.has-background::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(10, 10, 20, 0.82) 0%,
        rgba(10, 10, 20, 0.92) 50%,
        rgba(10, 10, 20, 0.97) 100%
    );
}

/* App container */
#app {
    position: relative;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
}

#page-content {
    flex: 1;
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--space-lg);
    padding-bottom: calc(var(--nav-height) + var(--space-xl) + env(safe-area-inset-bottom));
}

/* Page enter animation */
.page-enter {
    animation: pageEnter var(--transition-normal) ease-out;
}

@keyframes pageEnter {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
}

h1 { font-size: var(--font-size-xl); }
h2 { font-size: var(--font-size-lg); }
h3 { font-size: var(--font-size-md); }

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

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

img {
    max-width: 100%;
    display: block;
}

/* Utility classes */
.text-secondary { color: var(--color-text-secondary); }
.text-muted { color: var(--color-text-muted); }
.text-center { text-align: center; }
.text-sm { font-size: var(--font-size-sm); }
.text-xs { font-size: var(--font-size-xs); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-center { align-items: center; justify-content: center; }
.flex-between { justify-content: space-between; }
.flex-gap-sm { gap: var(--space-sm); }
.flex-gap-md { gap: var(--space-md); }
.flex-1 { flex: 1; }

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 4px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

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

/* Loading spinner */
.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: var(--space-2xl) auto;
}

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

/* Empty state */
.empty-state {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
    color: var(--color-text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--space-lg);
    opacity: 0.5;
}

.empty-state-text {
    font-size: var(--font-size-md);
    margin-bottom: var(--space-xl);
}

/* Offline banner */
.offline-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--color-warning);
    color: #000;
    text-align: center;
    padding: var(--space-xs) var(--space-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    z-index: 1000;
}