/**
 * Intro Animation Styles for CodeRoyal Homepage
 * Professional entry animation with typewriter effect and logo transition
 */

/* ============================================
   CONFIGURATION VARIABLES
   ============================================ */
:root {
    --intro-text-size: clamp(3rem, 8vw, 6rem);
    --intro-text-size-mobile: clamp(2rem, 6vw, 4rem);
    --intro-typing-speed: 120ms;
    --intro-scroll-delay: 2000ms;
    --intro-transition-duration: 800ms;
    --intro-cursor-blink: 1s;
}

/* ============================================
   INTRO ANIMATION CONTAINER
   ============================================ */
#intro-animation {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    background: var(--bg-body);
    pointer-events: none;
    opacity: 1;
    transition: opacity var(--intro-transition-duration) ease-out;
}

#intro-animation.hidden {
    opacity: 0;
    pointer-events: none;
}

#intro-animation.removed {
    display: none;
}

/* ============================================
   TITLE CONTAINER (CodeRoyal Text)
   ============================================ */
.intro-title-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
}

.intro-title-text {
    font-family: 'Courier New', 'Monaco', 'Menlo', 'Consolas', monospace;
    font-size: var(--intro-text-size);
    font-weight: 700;
    letter-spacing: 0.15em;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-align: center;
    line-height: 1.2;
    white-space: nowrap;
    position: relative;
}

/* Mobile responsive */
@media (max-width: 768px) {
    .intro-title-text {
        font-size: var(--intro-text-size-mobile);
        letter-spacing: 0.1em;
    }
}

/* ============================================
   TYPING CURSOR
   ============================================ */
.intro-cursor {
    display: inline-block;
    width: 4px;
    height: 1.2em;
    background: var(--color-primary);
    margin-right: 8px;
    margin-left: 4px;
    vertical-align: middle;
    border-radius: 2px;
    animation: intro-cursor-blink var(--intro-cursor-blink) infinite;
    opacity: 1;
}

.intro-cursor.hidden {
    display: none;
}

@keyframes intro-cursor-blink {
    0%, 50% {
        opacity: 1;
    }
    51%, 100% {
        opacity: 0;
    }
}

/* ============================================
   SCROLL MESSAGE
   ============================================ */
.intro-scroll-message {
    position: absolute;
    bottom: 10%;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    opacity: 0;
    transition: opacity 0.6s ease-in-out;
    pointer-events: auto;
}

.intro-scroll-message.visible {
    opacity: 1;
}

.intro-scroll-text {
    font-size: clamp(0.875rem, 2vw, 1.125rem);
    color: var(--text-muted);
    font-weight: 500;
    text-align: center;
    letter-spacing: 0.05em;
}

.intro-scroll-arrow {
    width: 24px;
    height: 24px;
    animation: intro-scroll-bounce 2s infinite;
    color: var(--color-primary);
    font-size: 1.5rem;
}

@keyframes intro-scroll-bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

/* ============================================
   LOGO TRANSITION STATE
   ============================================ */
#intro-animation.transitioning {
    pointer-events: none;
}

.intro-title-container.transitioning {
    position: fixed;
    will-change: transform, width, height, font-size;
    transition: all var(--intro-transition-duration) cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   THEME SUPPORT
   ============================================ */
#intro-animation {
    background: var(--bg-body);
}

/* ============================================
   ACCESSIBILITY & PERFORMANCE
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    #intro-animation,
    .intro-title-container,
    .intro-cursor,
    .intro-scroll-message,
    .intro-scroll-arrow {
        animation: none !important;
        transition: none !important;
    }
    
    .intro-cursor {
        opacity: 1;
    }
}

/* ============================================
   RTL SUPPORT
   ============================================ */
[dir="rtl"] .intro-cursor {
    margin-right: 4px;
    margin-left: 8px;
}