/* ============================================
   PRELOADER - Premium Entry Experience
   CodeBright | Black & Gold Theme
   ============================================ */


/* ============================================
   SCROLL LOCK
   ============================================ */
body.preloader-active {
    overflow: hidden;
}


/* ============================================
   FULLSCREEN OVERLAY
   ============================================ */
#preloader {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #000;
    will-change: transform, opacity;
}

/* ---- Exit animation: slide up + fade out ---- */
@keyframes preloaderExit {
    0%  { opacity: 1; transform: translateY(0); }
    50% { opacity: 0; }
    100%{ opacity: 0; transform: translateY(-100%); }
}

#preloader.hide {
    animation: preloaderExit 0.9s cubic-bezier(0.76, 0, 0.24, 1) forwards;
    pointer-events: none;
}


/* ============================================
   CANVAS PARTICLE BACKGROUND
   ============================================ */
#preloader-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}


/* ============================================
   AMBIENT GLOW
   ============================================ */
.preloader-glow {
    position: absolute;
    width: 700px;
    height: 400px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -58%);
    background: radial-gradient(
        ellipse at center,
        rgba(212, 175, 55, 0.07) 0%,
        rgba(212, 175, 55, 0.03) 40%,
        transparent 70%
    );
    pointer-events: none;
    animation: glowPulse 5s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% {
        opacity: 0.6;
        transform: translate(-50%, -58%) scale(1);
    }
    50% {
        opacity: 1;
        transform: translate(-50%, -58%) scale(1.12);
    }
}


/* ============================================
   CONTENT CONTAINER
   ============================================ */
.preloader-content {
    position: relative;
    z-index: 2;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    padding: 2rem;
    user-select: none;
}


/* ============================================
   BRAND TEXT
   ============================================ */
.preloader-brand {
    font-family: 'Playfair Display', serif;
    font-size: clamp(3.2rem, 11vw, 6.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1;
    opacity: 0;
    animation: brandReveal 1.4s cubic-bezier(0.22, 1, 0.36, 1) 0.2s forwards;
}

.brand-code {
    color: #ffffff;
    display: inline;
}

.brand-bright {
    background: linear-gradient(135deg, #D4AF37 0%, #F4D03F 40%, #D4AF37 100%);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline;
    animation: goldShimmer 3s linear 1.6s infinite;
}

@keyframes brandReveal {
    0% {
        opacity: 0;
        transform: translateY(24px);
        filter: blur(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes goldShimmer {
    0%   { background-position: 0% center; }
    100% { background-position: 200% center; }
}


/* ============================================
   TAGLINE
   ============================================ */
.preloader-tagline {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(0.65rem, 2vw, 0.8rem);
    font-weight: 400;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.35);
    margin: 0;
    opacity: 0;
    animation: fadeSlideUp 0.8s ease-out 1s forwards;
}


/* ============================================
   PROGRESS BAR
   ============================================ */
.progress-track {
    width: clamp(160px, 38vw, 260px);
    height: 1.5px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 9999px;
    overflow: hidden;
    margin-top: 6px;
    opacity: 0;
    animation: fadeSlideUp 0.6s ease-out 1.2s forwards;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, #B8860B, #D4AF37, #F4D03F, #D4AF37);
    background-size: 300% auto;
    border-radius: 9999px;
    box-shadow: 0 0 8px rgba(212, 175, 55, 0.8), 0 0 20px rgba(212, 175, 55, 0.3);
    animation:
        progressFill 2.4s cubic-bezier(0.4, 0, 0.15, 1) 1.4s forwards,
        barShimmer 1.5s linear 1.4s infinite;
}

@keyframes progressFill {
    0%   { width: 0%; }
    30%  { width: 28%; }
    60%  { width: 65%; }
    85%  { width: 88%; }
    100% { width: 100%; }
}

@keyframes barShimmer {
    0%   { background-position: 0% center; }
    100% { background-position: 300% center; }
}


/* ============================================
   ENTER BUTTON
   ============================================ */
.preloader-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 38px;
    background: transparent;
    border: 1px solid rgba(212, 175, 55, 0.45);
    border-radius: 9999px;
    color: rgba(255, 255, 255, 0.9);
    font-family: 'Poppins', sans-serif;
    font-size: clamp(0.8rem, 2vw, 0.9rem);
    font-weight: 500;
    letter-spacing: 0.1em;
    cursor: pointer;
    opacity: 0;
    transform: translateY(14px);
    pointer-events: none;
    transition:
        opacity 0.55s cubic-bezier(0.22, 1, 0.36, 1),
        transform 0.55s cubic-bezier(0.22, 1, 0.36, 1),
        border-color 0.3s ease-in-out,
        color 0.3s ease-in-out,
        box-shadow 0.35s ease-in-out,
        background 0.3s ease-in-out;
    position: relative;
    overflow: hidden;
    margin-top: 10px;
    -webkit-tap-highlight-color: transparent;
}

/* Inner glow layer */
.preloader-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(212, 175, 55, 0.12),
        rgba(244, 208, 63, 0.04)
    );
    opacity: 0;
    transition: opacity 0.3s ease;
    border-radius: inherit;
}

/* Ripple-like sweep on hover */
.preloader-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(212, 175, 55, 0.08);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.5s ease, height 0.5s ease, opacity 0.5s ease;
    opacity: 0;
}

.preloader-btn.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.preloader-btn:hover {
    border-color: rgba(212, 175, 55, 0.85);
    color: #F4D03F;
    background: rgba(212, 175, 55, 0.04);
    box-shadow:
        0 0 24px rgba(212, 175, 55, 0.2),
        0 0 56px rgba(212, 175, 55, 0.08),
        inset 0 0 24px rgba(212, 175, 55, 0.04);
    transform: translateY(-2px) scale(1.03);
}

.preloader-btn:hover::before {
    opacity: 1;
}

.preloader-btn:hover::after {
    width: 300px;
    height: 300px;
    opacity: 1;
}

.preloader-btn:active {
    transform: translateY(0) scale(0.97);
    box-shadow: 0 0 12px rgba(212, 175, 55, 0.15);
}

.btn-arrow {
    display: inline-block;
    font-style: normal;
    transition: transform 0.35s cubic-bezier(0.22, 1, 0.36, 1);
    font-size: 1rem;
    line-height: 1;
}

.preloader-btn:hover .btn-arrow {
    transform: translateX(5px);
}


/* ============================================
   SHARED FADE + SLIDE KEYFRAME
   ============================================ */
@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 480px) {
    .preloader-content {
        gap: 14px;
        padding: 1.5rem;
    }

    .preloader-btn {
        padding: 13px 30px;
    }

    .preloader-glow {
        width: 100vw;
        height: 50vw;
    }
}