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

.glass {
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid var(--color-border-default);
}

.glass-card {
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid var(--color-border-default);
    box-shadow: var(--shadow-subtle);
}

/* Auth full-width button */
.auth-btn-full {
    width: 100%;
    height: 40px;
    font-size: 14px;
}

/* Flexbox & Layout */
.flex {
    display: flex;
}

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

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

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

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

.relative {
    position: relative !important;
}

.absolute {
    position: absolute !important;
}

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

.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);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

/* Gap */
.gap-1 {
    gap: var(--space-1);
}

.gap-2 {
    gap: var(--space-2);
}

.gap-3 {
    gap: var(--space-3);
}

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

.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-9); }

/* Spacing — margin */
.mt-1 { margin-top: var(--space-2); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-5); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-10); }

.mb-1 { margin-bottom: var(--space-2); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-5); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-10); }

.mr-1 { margin-right: var(--space-2); }
.mr-2 { margin-right: var(--space-3); }
.ml-1 { margin-left: var(--space-2); }
.ml-2 { margin-left: var(--space-3); }

/* Spacing — padding */
.p-0  { padding: 0; }
.p-4  { padding: var(--space-4); }
.p-6  { padding: var(--space-6); }
.p-8  { padding: var(--space-9); }

.pt-4 { padding-top: var(--space-4); }
.pt-6 { padding-top: var(--space-6); }
.pb-4 { padding-bottom: var(--space-4); }

/* Child spacing (vertical rhythm in forms/lists) */
.space-y-4 > * + * { margin-top: var(--space-7); }
.space-y-6 > * + * { margin-top: var(--space-10); }

/* Borders */
.border-t     { border-top:    1px solid var(--color-border-default); }
.border-b     { border-bottom: 1px solid var(--color-border-default); }
.border-light { border-color:  var(--color-border-light); }

/* Typography */
.text-center {
    text-align: center;
}

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

.font-normal   { font-weight: var(--font-normal); }
.font-medium   { font-weight: var(--font-medium); }
.font-semibold { font-weight: var(--font-semibold); }
.font-bold     { font-weight: var(--font-bold); }

.leading-tight   { line-height: 1.25; }
.leading-snug    { line-height: 1.375; }
.leading-normal  { line-height: 1.5; }
.leading-relaxed { line-height: 1.625; }
.leading-loose   { line-height: 2; }

.text-xs {
    font-size: var(--text-xs);
}

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

.text-base {
    font-size: var(--text-base);
}

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

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

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

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

.text-primary {
    color: var(--color-text-primary);
}

.text-secondary {
    color: var(--color-text-secondary);
}

.text-muted {
    color: var(--color-text-muted);
}

.text-faint {
    color: var(--color-text-faint);
}

.text-tertiary { color: var(--color-text-muted); }

.uppercase       { text-transform: uppercase; }
.tracking-wide   { letter-spacing: 0.05em; }
.tracking-wider  { letter-spacing: 0.08em; }
.tracking-normal { letter-spacing: 0; }

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

.text-accent {
    color: var(--color-accent);
}

.text-success {
    color: var(--color-status-success-text);
}

.text-warning {
    color: var(--color-status-warning-text);
}

.text-danger {
    color: var(--color-status-danger-text);
}

.bg-accent {
    background: var(--color-accent);
}

.bg-subtle {
    background: var(--color-bg-subtle);
}

.bg-success-subtle {
    background: var(--color-status-success-bg);
}

.bg-danger-subtle {
    background: var(--color-status-danger-bg);
}

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

.max-w-md {
    max-width: 28rem;
}

.max-w-lg {
    max-width: 32rem;
}

.max-w-xl {
    max-width: 36rem;
}

.max-w-2xl { max-width: 42rem; }
.max-w-3xl { max-width: 48rem; }
.max-w-4xl { max-width: 56rem; }

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

.flex-wrap {
    flex-wrap: wrap;
}

.flex-1 {
    flex: 1;
}

.nowrap {
    white-space: nowrap;
}

.opacity-disabled {
    opacity: 0.4;
    pointer-events: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

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



@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }

    100% {
        background-position: 200% 0;
    }
}

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

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

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

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

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--color-bg-subtle) 25%, var(--color-bg-hover) 50%, var(--color-bg-subtle) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: var(--radius-md);
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Responsive Grids */
@media (max-width: 768px) {
    .main-content {
        padding: var(--space-4);
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 480px) {
    .btn {
        width: 100%;
    }
}
/* Additional utilities */
.overflow-visible { overflow: visible; }
.resize-y         { resize: vertical; }
.pre-wrap         { white-space: pre-wrap; }
.align-middle     { vertical-align: middle; }
.mt-10            { margin-top: var(--space-10); }
.mb-5             { margin-bottom: var(--space-5); }
.mb-3             { margin-bottom: var(--space-3); }