/**
 * ============================================
 * CHIFFTOWN LOADING SCREEN STYLES
 * ============================================
 * Beautiful animated transitions between rooms
 * Deep blues, teal, gold - no pink/purple
 * Crisp & cool design language
 * ============================================
 */

/* ==========================================
   LOADING SCREEN CONTAINER
   ========================================== */

.loading-screen {
    position: fixed;
    inset: 0;
    z-index: 99999;
    background: linear-gradient(
        135deg,
        rgba(10, 15, 30, 0.98) 0%,
        rgba(15, 25, 45, 0.98) 50%,
        rgba(10, 20, 35, 0.98) 100%
    );
    backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
    
    /* Accent color (set dynamically) */
    --loading-accent: #4fc3f7;
}

.loading-screen.active {
    opacity: 1;
    visibility: visible;
}

.loading-screen.hiding {
    opacity: 0;
    visibility: hidden;
}

/* Background gradient animation */
.loading-screen::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        ellipse 80% 50% at 50% 50%,
        rgba(79, 195, 247, 0.08) 0%,
        transparent 60%
    );
    animation: pulseGlow 3s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

/* Grid pattern overlay */
.loading-screen::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(79, 195, 247, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(79, 195, 247, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
}

/* ==========================================
   LOADING CONTENT
   ========================================== */

.loading-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    padding: 2rem;
    max-width: 400px;
    width: 90%;
}

/* ==========================================
   ANIMATED LOGO
   ========================================== */

.loading-logo {
    position: relative;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-ring {
    position: absolute;
    border-radius: 50%;
    border: 2px solid transparent;
}

.logo-ring.outer {
    width: 100%;
    height: 100%;
    border-color: rgba(79, 195, 247, 0.3);
    border-top-color: var(--loading-accent);
    animation: spinRing 2s linear infinite;
}

.logo-ring.middle {
    width: 80%;
    height: 80%;
    border-color: rgba(79, 195, 247, 0.2);
    border-right-color: var(--loading-accent);
    animation: spinRing 1.5s linear infinite reverse;
}

.logo-ring.inner {
    width: 60%;
    height: 60%;
    border-color: rgba(79, 195, 247, 0.15);
    border-bottom-color: var(--loading-accent);
    animation: spinRing 1s linear infinite;
}

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

.logo-icon {
    position: relative;
    z-index: 3;
    font-size: 2.5rem;
    animation: bounceIcon 1.5s ease-in-out infinite;
    filter: drop-shadow(0 0 10px var(--loading-accent));
}

@keyframes bounceIcon {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-8px) scale(1.1); }
}

/* ==========================================
   ROOM INFO
   ========================================== */

.loading-info {
    text-align: center;
}

.loading-room-name {
    font-family: 'Playfair Display', serif;
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 30px var(--loading-accent);
    animation: fadeSlideUp 0.6s ease-out forwards;
    animation-delay: 0.2s;
    opacity: 0;
}

.loading-tagline {
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-style: italic;
    animation: fadeSlideUp 0.6s ease-out forwards;
    animation-delay: 0.4s;
    opacity: 0;
}

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

/* ==========================================
   PROGRESS BAR
   ========================================== */

.loading-progress-container {
    width: 100%;
    max-width: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    animation: fadeSlideUp 0.6s ease-out forwards;
    animation-delay: 0.5s;
    opacity: 0;
}

.loading-progress-track {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid rgba(79, 195, 247, 0.2);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.3);
}

.loading-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(
        90deg,
        var(--loading-accent) 0%,
        #29b6f6 50%,
        var(--loading-accent) 100%
    );
    background-size: 200% 100%;
    border-radius: 10px;
    transition: width 0.1s ease-out;
    animation: shimmerProgress 2s linear infinite;
    box-shadow: 0 0 10px var(--loading-accent);
}

@keyframes shimmerProgress {
    from { background-position: 200% 0; }
    to { background-position: -200% 0; }
}

.loading-percentage {
    font-family: 'Inter', sans-serif;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--loading-accent);
    text-shadow: 0 0 10px var(--loading-accent);
}

/* ==========================================
   LOADING TIP
   ========================================== */

.loading-tip {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.5rem;
    background: rgba(255, 193, 7, 0.1);
    border: 1px solid rgba(255, 193, 7, 0.25);
    border-radius: 12px;
    animation: fadeSlideUp 0.6s ease-out forwards;
    animation-delay: 0.7s;
    opacity: 0;
}

.loading-tip i {
    font-size: 1.25rem;
    color: #ffc107;
    animation: pulseTip 2s ease-in-out infinite;
}

@keyframes pulseTip {
    0%, 100% { opacity: 0.7; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

.loading-tip span {
    font-family: 'Inter', sans-serif;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.85);
    font-style: italic;
}

/* ==========================================
   PARTICLE EFFECTS
   ========================================== */

.loading-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.loading-particles .particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--loading-accent);
    border-radius: 50%;
    opacity: 0;
    animation: floatParticle 4s ease-in-out infinite;
}

.loading-particles .particle:nth-child(1) { left: 10%; animation-delay: 0s; }
.loading-particles .particle:nth-child(2) { left: 20%; animation-delay: 0.5s; }
.loading-particles .particle:nth-child(3) { left: 35%; animation-delay: 1s; }
.loading-particles .particle:nth-child(4) { left: 50%; animation-delay: 1.5s; }
.loading-particles .particle:nth-child(5) { left: 65%; animation-delay: 2s; }
.loading-particles .particle:nth-child(6) { left: 75%; animation-delay: 2.5s; }
.loading-particles .particle:nth-child(7) { left: 85%; animation-delay: 3s; }
.loading-particles .particle:nth-child(8) { left: 95%; animation-delay: 3.5s; }

@keyframes floatParticle {
    0% {
        bottom: -10%;
        opacity: 0;
        transform: translateX(0) scale(0.5);
    }
    10% {
        opacity: 0.8;
    }
    90% {
        opacity: 0.8;
    }
    100% {
        bottom: 110%;
        opacity: 0;
        transform: translateX(50px) scale(1.5);
    }
}

/* Alternate particle sizes and colors */
.loading-particles .particle:nth-child(2n) {
    width: 6px;
    height: 6px;
    background: rgba(255, 193, 7, 0.8);
}

.loading-particles .particle:nth-child(3n) {
    width: 3px;
    height: 3px;
    background: rgba(255, 255, 255, 0.6);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 768px) {
    .loading-content {
        gap: 1.5rem;
        padding: 1.5rem;
    }
    
    .loading-logo {
        width: 100px;
        height: 100px;
    }
    
    .logo-icon {
        font-size: 2rem;
    }
    
    .loading-room-name {
        font-size: 1.5rem;
    }
    
    .loading-tagline {
        font-size: 0.875rem;
    }
    
    .loading-progress-container {
        max-width: 250px;
    }
    
    .loading-tip {
        padding: 0.875rem 1.25rem;
    }
    
    .loading-tip span {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .loading-content {
        gap: 1.25rem;
        padding: 1rem;
    }
    
    .loading-logo {
        width: 80px;
        height: 80px;
    }
    
    .logo-icon {
        font-size: 1.75rem;
    }
    
    .loading-room-name {
        font-size: 1.25rem;
    }
    
    .loading-tagline {
        font-size: 0.8rem;
    }
    
    .loading-tip {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
}

/* ==========================================
   PREFERS REDUCED MOTION
   ========================================== */

@media (prefers-reduced-motion: reduce) {
    .logo-ring,
    .logo-icon,
    .loading-room-name,
    .loading-tagline,
    .loading-progress-container,
    .loading-tip,
    .loading-progress-bar,
    .loading-tip i,
    .loading-particles .particle {
        animation: none;
    }
    
    .loading-room-name,
    .loading-tagline,
    .loading-progress-container,
    .loading-tip {
        opacity: 1;
    }
    
    .loading-progress-bar {
        background: var(--loading-accent);
    }
}