:root {
    --bg-dark: #0f1115;
    /* Slava Kornilov deep gray/black */
    --bg-card: #181b21;
    --bg-sidebar: #131519;
    --primary-color: #6366f1;
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;

    --skeleton-base: #1e2229;
    --skeleton-highlight: #282c34;

    --easing-smooth: cubic-bezier(0.25, 0.1, 0.25, 1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

.app-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    background-color: var(--bg-sidebar);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    border-right: 1px solid #ffffff0d;
}

.nav-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    flex-grow: 1;
}

/* Main Content */
.main-content {
    padding: 2rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* Header */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

/* Stats Row */
.stats-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.card {
    background-color: var(--bg-card);
    border-radius: 16px;
    padding: 1.5rem;
    min-height: 150px;
    border: 1px solid #ffffff05;
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* Kanban */
.kanban-board {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    flex-grow: 1;
}

.column {
    background-color: #13151980;
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* --- Skeleton Logic (The "Ghost" Dashboard) --- */
.skeleton {
    background-color: var(--skeleton-base);
    border-radius: 6px;
    position: relative;
    overflow: hidden;
    /* Optional: Maintain block shape if duplicate of text */
    min-height: 1em;
}

.skeleton.circle {
    border-radius: 50%;
}

.skeleton.circle.large {
    width: 80px;
    height: 80px;
}

.skeleton.circle.small {
    width: 32px;
    height: 32px;
}



/* 
 * GPU Accelerated Shimmer 
 * Using translate3d/translateX on pseudo-element
 */
.skeleton::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    transform: translateX(-100%);
    background: linear-gradient(90deg,
            transparent 0%,
            var(--skeleton-highlight) 50%,
            transparent 100%);
    animation: shimmer 1.5s infinite;
    /* Force GPU */
    will-change: transform;
}

@keyframes shimmer {
    0% {
        transform: translateX(-100%);
    }

    100% {
        transform: translateX(100%);
    }
}

/* Adaptive Connection: Low Bandwidth Aura */
.low-bandwidth .skeleton::after {
    animation: none;
    background: none;
}

.low-bandwidth .skeleton {
    /* Solid pulse instead of shimmer for performance/bandwidth saving */
    animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
    0% {
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }

    100% {
        opacity: 0.6;
    }
}

/* --- Content Reveal & Staggering --- */

/* Initial hidden state for real content logic (if we were swapping) */
.hidden {
    opacity: 0;
    visibility: hidden;
}

/* Classes to remove skeleton styles when loaded */
.content-ready .skeleton {
    background-color: transparent;
    /* Or remove class entirely via JS */
    min-height: auto;
}

.content-ready .skeleton::after {
    display: none;
}

/* Staggered Entry Animation */
.staggered-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s var(--easing-smooth), transform 0.6s var(--easing-smooth);
}

.is-loaded .staggered-item {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.2s;
}

/* Micro-loader Button Morph */
.btn-primary {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 100px;
    height: 44px;
    /* Fixed height for morph */
}

.btn-primary.loading {
    width: 44px;
    /* Shrink to circle */
    min-width: 44px;
    border-radius: 50%;
    padding: 0;
    color: transparent;
    /* Hide text */
}

.btn-text {
    transition: opacity 0.2s;
}

.btn-primary.loading .btn-text {
    opacity: 0;
    display: none;
}

.loader-ring {
    width: 20px;
    height: 20px;
    border: 2px solid #ffffff4d;
    border-top: 2px solid #ffffff;
    border-radius: 50%;
    display: none;
    animation: spin 0.8s linear infinite;
}

.btn-primary.loading .loader-ring {
    display: block;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}