:root {
    --bg-dark: #07090e;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #38bdf8;
    --glass-bg: rgba(15, 23, 42, 0.65);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --transition-speed: 1.0s;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body, html {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--bg-dark);
    font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-main);
    user-select: none;
    -webkit-user-select: none;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Portfolio Container */
.portfolio-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

/* Background Slideshow */
.slideshow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background-color: var(--bg-dark);
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    opacity: 0;
    visibility: hidden;
    transform: scale(1.04);
    transition: opacity var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1),
                transform 4.5s cubic-bezier(0.25, 1, 0.5, 1),
                visibility var(--transition-speed);
    will-change: opacity, transform;
}

.slide.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1);
    z-index: 2;
}

/* Vignette & Atmospheric Overlay */
.vignette-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 3;
    pointer-events: none;
    background: radial-gradient(circle at center, transparent 45%, rgba(7, 9, 14, 0.35) 85%, rgba(7, 9, 14, 0.75) 100%),
                linear-gradient(180deg, rgba(7, 9, 14, 0.55) 0%, transparent 20%, transparent 80%, rgba(7, 9, 14, 0.55) 100%);
}

/* Empty State */
.no-images-state {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 10;
    text-align: center;
}

.no-images-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 2.5rem 3rem;
    border-radius: 16px;
    max-width: 500px;
    box-shadow: var(--glass-shadow);
}

.no-images-card h2 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--accent);
}

.no-images-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.no-images-card code {
    background: rgba(255, 255, 255, 0.1);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    color: var(--text-main);
}

/* Header & Brand Card */
.portfolio-header {
    position: relative;
    z-index: 10;
    padding: 2.5rem 3.5rem;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    pointer-events: none;
}

.brand-card {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    background: rgba(10, 15, 26, 0.42);
    border: 1px solid rgba(255, 255, 255, 0.09);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    padding: 1rem 1.4rem;
    border-radius: 12px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    pointer-events: auto;
}

.logo {
    font-size: 1.85rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.6);
    margin: 0;
    line-height: 1.1;
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    flex-wrap: wrap;
    font-size: 0.88rem;
    color: rgba(241, 245, 249, 0.85);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-weight: 400;
    letter-spacing: 0.01em;
}

.contact-separator {
    color: rgba(255, 255, 255, 0.35);
    font-size: 0.75rem;
}

.contact-item {
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.7);
}

/* Responsive */
@media (max-width: 768px) {
    .portfolio-header {
        padding: 1.25rem 1.25rem;
    }

    .brand-card {
        padding: 0.8rem 1rem;
        gap: 0.3rem;
    }

    .logo {
        font-size: 1.4rem;
    }

    .contact-info {
        font-size: 0.78rem;
        gap: 0.35rem;
    }
}