@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;600;700;800&family=Inter:wght@400;500;600&display=swap');

:root {
    --primary: #0f172a;
    --primary-container: #334155;
    --surface-tint: #2563eb;
    --on-primary: #ffffff;
    
    --surface: #f8fafc; /* Very light slate */
    --surface-container-low: #ffffff; /* Pure white */
    --surface-container: #f1f5f9;
    --surface-container-high: #e2e8f0;
    --surface-container-highest: #cbd5e1;
    --surface-container-lowest: #ffffff;
    
    --on-surface: #0f172a;
    --on-surface-variant: #64748b;
    --outline-variant: #e2e8f0;
    
    --secondary-container: #dbeafe;
    --on-secondary-container: #1e40af;
    
    --error: #ef4444;
}

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

body {
    background-color: var(--surface);
    color: var(--on-surface);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
}

.font-manrope { font-family: 'Manrope', sans-serif; }

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--surface-tint) 0%, var(--primary-container) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.nav-item {
    padding: 0.75rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--on-surface-variant);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s;
    border-radius: 0.75rem;
    margin: 0.25rem 1rem;
}

.nav-item:hover {
    background-color: var(--surface-container);
    color: var(--primary);
}

.nav-item.active {
    background-color: var(--secondary-container);
    color: var(--on-secondary-container);
}

.card {
    background-color: var(--surface-container-lowest);
    border-radius: 1.5rem;
    padding: 2rem;
    border: 1px solid var(--outline-variant);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
}

.btn-primary {
    background: var(--surface-tint);
    color: white;
    border: none;
    border-radius: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.btn-primary:active {
    transform: scale(0.98);
}

.input-field {
    background-color: var(--surface-container);
    border: 1px solid var(--outline-variant);
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    width: 100%;
    color: var(--on-surface);
    font-size: 14px;
    transition: all 0.2s;
}

.input-field:focus {
    outline: none;
    border-color: var(--surface-tint);
    background-color: var(--surface-container-lowest);
}

.label {
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--on-surface-variant);
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    display: block;
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    background-color: var(--secondary-container);
    color: var(--on-secondary-container);
}

.glass-panel {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    border: 1px solid var(--outline-variant);
    border-radius: 1.5rem;
}

.visitor-row {
    display: flex;
    align-items: center;
    padding: 1.25rem 1rem;
    transition: background-color 0.2s;
    border-bottom: 1px solid var(--outline-variant);
}

.visitor-row:hover {
    background-color: var(--surface-container);
    border-radius: 1rem;
}

.timer-display {
    font-family: 'Inter', sans-serif;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--surface-tint);
}

.chat-bubble {
    padding: 0.75rem 1.25rem;
    border-radius: 1.25rem;
    max-width: 80%;
    margin-bottom: 1rem;
    font-size: 14px;
}

.msg-sent {
    background: var(--surface-tint);
    color: white;
    align-self: flex-end;
    margin-left: auto;
    border-bottom-right-radius: 4px;
}

.msg-received {
    background-color: var(--surface-container);
    color: var(--on-surface);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

/* Animations */
@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes zoomIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.animate-in {
    animation-duration: 0.2s;
    animation-fill-mode: forwards;
}

.zoom-in { animation-name: zoomIn; }

/* Components */
.toast {
    background: white;
    padding: 1rem 1.5rem;
    border-radius: 1rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    animation: slideInRight 0.3s ease-out forwards;
    pointer-events: auto;
    border-left: 4px solid var(--surface-tint);
    min-width: 280px;
}

.toast.success { border-left-color: #22c55e; }
.toast.error { border-left-color: var(--error); }

.scrollbar-hide::-webkit-scrollbar { display: none; }
.scrollbar-hide { -ms-overflow-style: none; scrollbar-width: none; }

/* Mobile Enhancements */
/* Kanban Layout */
.kanban-scroll {
    display: flex;
    overflow-x: auto;
    gap: 1rem;
    padding-bottom: 1rem;
}

.kanban-scroll > div {
    flex: 0 0 280px; /* Mobile width */
}

@media (min-width: 1024px) {
    .kanban-scroll > div {
        flex: 1 1 0; /* Flexible desktop width */
        min-width: 0;
    }
}

/* Mobile Enhancements */
@media (max-width: 1024px) {
    .sidebar { display: none; }
    
    .mobile-nav {
        display: flex !important;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 64px;
        background: var(--surface-container-low);
        border-top: 1px solid var(--outline-variant);
        z-index: 100;
        justify-content: space-around;
        align-items: center;
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    .mobile-nav .nav-item {
        margin: 0;
        padding: 0;
        flex-direction: column;
        gap: 2px;
        font-size: 10px;
        color: var(--on-surface-variant);
        background: transparent;
        box-shadow: none;
    }
    
    .mobile-nav .nav-item.active {
        color: var(--surface-tint);
    }

    main {
        padding: 1rem !important;
        padding-bottom: 80px !important;
    }
    
    .glass-panel {
        max-height: 400px;
    }
}

.mobile-nav { display: none; }