/**
 * OptiMine SPA Styles
 * Custom styles for Single Page Application
 */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    --background: 0 0% 100%;
    --foreground: 240 10% 3.9%;
    --primary: 221 83% 53%;
    --primary-foreground: 0 0% 100%;
    --secondary: 240 4.8% 95.9%;
    --secondary-foreground: 240 5.9% 10%;
    --muted: 240 4.8% 95.9%;
    --muted-foreground: 240 3.8% 46.1%;
    --border: 240 5.9% 90%;
    --card: 0 0% 100%;
    --card-foreground: 240 10% 3.9%;
    --accent: 240 4.8% 95.9%;
    --accent-foreground: 240 5.9% 10%;
}

.dark {
    --background: 240 10% 3.9%;
    --foreground: 0 0% 98%;
    --primary: 221 83% 53%;
    --primary-foreground: 0 0% 100%;
    --secondary: 240 3.7% 15.9%;
    --secondary-foreground: 0 0% 98%;
    --muted: 240 3.7% 15.9%;
    --muted-foreground: 240 5% 64.9%;
    --border: 240 3.7% 15.9%;
    --card: 240 10% 5.9%;
    --card-foreground: 0 0% 98%;
    --accent: 240 3.7% 15.9%;
    --accent-foreground: 0 0% 98%;
}

/* ============================================
   BASE STYLES
   ============================================ */
html, body {
    background-color: hsl(var(--background));
    color: hsl(var(--foreground));
}

.glass {
    background: hsl(var(--card) / 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

/* ============================================
   GPU ACCELERATED PAGE TRANSITIONS
   No overlay - smooth CSS animations only
   ============================================ */
#spa-content {
    will-change: opacity, transform;
}

.page-enter {
    opacity: 0;
    transform: translateY(10px);
}

.page-enter-active {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

.page-exit {
    opacity: 1;
    transform: translateY(0);
}

.page-exit-active {
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.2s ease-in, transform 0.2s ease-in;
}

/* ============================================
   LOADER ANIMATION
   ============================================ */
.spa-loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.spa-loader-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid rgba(255, 255, 255, 0.2);
    border-top-color: white;
    border-radius: 50%;
    animation: spa-spin 0.8s linear infinite;
}

.spa-loader-text {
    color: white;
    font-size: 0.875rem;
    font-weight: 500;
    opacity: 0.9;
}

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

/* ============================================
   ANIMATION UTILITIES
   GPU accelerated with transform + opacity
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

.animate-scale-in {
    animation: scaleIn 0.3s ease-out forwards;
}

.animate-slide-up {
    animation: slideUp 0.5s ease-out forwards;
}

.animate-slide-down {
    animation: slideDown 0.3s ease-out forwards;
}

/* Staggered animation delays */
.stagger-1 { animation-delay: 0.1s; opacity: 0; }
.stagger-2 { animation-delay: 0.2s; opacity: 0; }
.stagger-3 { animation-delay: 0.3s; opacity: 0; }
.stagger-4 { animation-delay: 0.4s; opacity: 0; }
.stagger-5 { animation-delay: 0.5s; opacity: 0; }

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
.spa-toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.spa-toast {
    padding: 0.875rem 1.25rem;
    border-radius: 0.75rem;
    background: hsl(var(--card));
    border: 1px solid hsl(var(--border));
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.25);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 280px;
    max-width: 400px;
    pointer-events: auto;
    animation: toastIn 0.3s ease;
}

.spa-toast.exiting {
    animation: toastOut 0.3s ease forwards;
}

.spa-toast-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.spa-toast-message {
    flex: 1;
    font-size: 0.875rem;
    color: hsl(var(--foreground));
}

.spa-toast.success .spa-toast-icon { color: #22c55e; }
.spa-toast.error .spa-toast-icon { color: #ef4444; }
.spa-toast.warning .spa-toast-icon { color: #f59e0b; }
.spa-toast.info .spa-toast-icon { color: hsl(var(--primary)); }

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes toastOut {
    from {
        opacity: 1;
        transform: translateX(0);
    }
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

/* ============================================
   AUTH TAB STYLES
   ============================================ */
.auth-tab {
    color: hsl(var(--muted-foreground));
    background: transparent;
}

.auth-tab.active {
    color: hsl(var(--foreground));
    background: hsl(var(--background));
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* ============================================
   NAVIGATION ACTIVE STATE
   ============================================ */
.spa-nav-link {
    position: relative;
    transition: color 0.2s ease;
}

.spa-nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: hsl(var(--primary));
    transition: width 0.3s ease;
}

.spa-nav-link.active {
    color: hsl(var(--primary));
}

.spa-nav-link.active::after {
    width: 100%;
}

.spa-mobile-nav-link.active {
    color: hsl(var(--primary));
    background: hsl(var(--primary) / 0.1);
}

/* ============================================
   BORDER GLOW EFFECT
   ============================================ */
.border-glow {
    position: relative;
}

.border-glow::before {
    content: '';
    position: absolute;
    inset: -1px;
    background: linear-gradient(135deg, hsl(var(--primary) / 0.5), transparent, hsl(var(--primary) / 0.3));
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.border-glow:hover::before {
    opacity: 1;
}

/* ============================================
   SCROLLBAR STYLES
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: hsl(var(--secondary) / 0.5);
}

::-webkit-scrollbar-thumb {
    background: hsl(var(--muted-foreground) / 0.3);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: hsl(var(--muted-foreground) / 0.5);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 640px) {
    .spa-toast-container {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
    }

    .spa-toast {
        min-width: auto;
        max-width: none;
        width: 100%;
    }
}

/* ============================================
   TYPEWRITER EFFECT
   ============================================ */
.welcome-typewriter {
    min-height: 1.5em;
    display: inline-block;
}

.typewriter-active::after {
    content: '|';
    animation: blink-caret 0.75s step-end infinite;
    color: #f59e0b;
    font-weight: 300;
    margin-left: 2px;
}

.typewriter-complete::after {
    content: '';
    animation: none;
}

.typewriter-welcome {
    color: inherit;
}

.typewriter-username {
    color: #f59e0b;
    font-weight: 700;
}

@keyframes blink-caret {
    from, to { opacity: 1; }
    50% { opacity: 0; }
}

/* Subtle glow effect when typing */
.typewriter-active .typewriter-username {
    text-shadow: 0 0 10px rgba(245, 158, 11, 0.5);
}

/* ============================================
   STAT COUNTER ANIMATION
   ============================================ */
.stat-value {
    display: inline-block;
    min-width: 2ch;
    transition: transform 0.3s ease, text-shadow 0.3s ease;
}

.stat-card {
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    transition: left 0.5s ease;
}

.stat-card:hover::before {
    left: 100%;
}

/* Pulse effect when counter completes */
@keyframes stat-pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.1); }
    100% { transform: scale(1); }
}

.stat-value.complete {
    animation: stat-pulse 0.3s ease;
}

/* Number glow effect on hover */
.stat-card:hover .stat-value {
    text-shadow: 0 0 20px currentColor;
}


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