/* ========================================
   ADDU Studio - Main Stylesheet
   ======================================== */

/* CSS Custom Properties */
:root {
    --color-black: #000000;
    --color-dark: #0a0a0a;
    --color-overlay: rgba(0, 0, 0, 0.55);
    --color-white: #ffffff;
    --color-red: #c0392b;
    --color-red-glow: rgba(192, 57, 43, 0.4);
    --color-accent: #e74c3c;
    --color-subtle: rgba(255, 255, 255, 0.15);
    --color-text-muted: rgba(255, 255, 255, 0.6);

    --transition-smooth: 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-fast: 0.3s ease;

    --logo-size: 320px;
    --logo-size-mobile: 220px;
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
}

body {
    background-color: var(--color-black);
    color: var(--color-white);
    position: relative;
}

/* ========================================
   Background Layer
   ======================================== */
.bg-layer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: 0;
    /* Subtle zoom animation */
    animation: slowZoom 25s ease-in-out infinite alternate;
}

@keyframes slowZoom {
    0% {
        transform: scale(1);
    }
    100% {
        transform: scale(1.08);
    }
}

/* ========================================
   Dark Overlay
   ======================================== */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(
        ellipse at center,
        rgba(0, 0, 0, 0.35) 0%,
        rgba(0, 0, 0, 0.65) 50%,
        rgba(0, 0, 0, 0.85) 100%
    );
    z-index: 2;
    pointer-events: none;
}

/* ========================================
   Particles Canvas
   ======================================== */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    pointer-events: none;
}

/* ========================================
   Main Content
   ======================================== */
.content {
    position: relative;
    z-index: 4;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100vh;
    gap: 30px;
    /* Initial state for entrance animation */
    opacity: 0;
    animation: fadeInContent 1.5s ease-out 0.5s forwards;
}

@keyframes fadeInContent {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Logo
   ======================================== */
.logo-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--logo-size);
    height: var(--logo-size);
}

.logo {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 0 30px rgba(0, 0, 0, 0.5));
    transition: transform var(--transition-smooth), filter var(--transition-smooth);
    animation: logoFloat 6s ease-in-out infinite;
    cursor: pointer;
}

.logo:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 40px var(--color-red-glow))
            drop-shadow(0 0 80px rgba(192, 57, 43, 0.2));
}

.logo-glow {
    position: absolute;
    width: 60%;
    height: 60%;
    background: radial-gradient(
        circle,
        var(--color-red-glow) 0%,
        transparent 70%
    );
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0;
    transition: opacity var(--transition-smooth);
    pointer-events: none;
    z-index: -1;
}

.logo-container:hover .logo-glow {
    opacity: 1;
}

@keyframes logoFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-12px);
    }
}

/* ========================================
   Tagline
   ======================================== */
.tagline {
    display: flex;
    align-items: center;
    gap: 20px;
    opacity: 0;
    animation: fadeInTagline 1s ease-out 1.2s forwards;
}

.tagline p {
    font-size: 14px;
    font-weight: 300;
    letter-spacing: 8px;
    text-transform: uppercase;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.tagline-line {
    display: block;
    width: 60px;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--color-subtle),
        transparent
    );
}

@keyframes fadeInTagline {
    0% {
        opacity: 0;
        transform: translateY(10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Social Links
   ======================================== */
.social-links {
    position: fixed;
    bottom: 32px;
    left: 0;
    right: 0;
    z-index: 5;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    opacity: 0;
    animation: fadeInTagline 1s ease-out 1.6s forwards;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.07);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: rgba(255, 255, 255, 0.55);
    text-decoration: none;
    transition: all var(--transition-fast);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--color-white);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

#youtubeLink:hover {
    color: #ff0000;
    border-color: rgba(255, 0, 0, 0.4);
    box-shadow: 0 6px 20px rgba(255, 0, 0, 0.15);
}

#xLink:hover {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.5);
}

.social-link svg {
    transition: transform var(--transition-fast);
}

.social-link:hover svg {
    transform: scale(1.15);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
    .logo-container {
        width: var(--logo-size-mobile);
        height: var(--logo-size-mobile);
    }

    .tagline p {
        font-size: 11px;
        letter-spacing: 5px;
    }

    .tagline-line {
        width: 35px;
    }

    .content {
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .logo-container {
        width: 180px;
        height: 180px;
    }

    .tagline p {
        font-size: 10px;
        letter-spacing: 4px;
    }

    .tagline-line {
        width: 25px;
    }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
    .logo {
        animation: none;
    }

    .bg-layer {
        animation: none;
    }

    .content {
        animation-duration: 0.3s;
    }

    .tagline {
        animation-duration: 0.3s;
    }
}