/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
    --bg: #0f172a;
    --bg-card: #1e293b;
    --bg-hover: #334155;
    --text: #e2e8f0;
    --text-muted: #94a3b8;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --accent: #10b981;
    --danger: #ef4444;
    --border: #334155;
    --sidebar-w: 260px;
    --sidebar-collapsed: 64px;
    --topbar-h: 56px;
    --radius: 8px;
    --transition: 0.2s ease;
}
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}
a { color: inherit; text-decoration: none; }

/* Alpine.js: hide elements until Alpine initialises */
[x-cloak] { display: none !important; }

/* === Layout === */
.layout { display: flex; min-height: 100vh; }

/* === Sidebar === */
.sidebar {
    width: var(--sidebar-w);
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    transition: width var(--transition);
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 100;
    overflow: hidden;
}
.sidebar.collapsed { width: var(--sidebar-collapsed); }
.main-content {
    margin-left: var(--sidebar-w);
    flex: 1;
    min-height: 100vh;
    transition: margin-left var(--transition);
}
.sidebar.collapsed + .main-content { margin-left: var(--sidebar-collapsed); }

.sidebar-header { padding: 16px; border-bottom: 1px solid var(--border); flex-shrink: 0; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.1rem; white-space: nowrap; }
.logo-icon { font-size: 1.5rem; flex-shrink: 0; }
.sidebar-nav { flex: 1; padding: 8px; display: flex; flex-direction: column; gap: 2px; overflow-y: auto; overflow-x: hidden; }
.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius);
    transition: background var(--transition), color var(--transition);
    white-space: nowrap;
    overflow: hidden;
}
.nav-item:hover { background: var(--bg-hover); }
.nav-item.active { background: var(--bg-hover); color: var(--primary); font-weight: 600; }
.nav-icon { font-size: 1.2rem; flex-shrink: 0; width: 24px; text-align: center; }
.nav-text { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-footer { padding: 8px; border-top: 1px solid var(--border); flex-shrink: 0; }
.user-info { padding: 8px 12px; font-size: 0.85rem; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Mobile sidebar overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
}
@media (max-width: 768px) {
    .sidebar-overlay { display: block; }
}

/* === Topbar === */
.topbar {
    height: var(--topbar-h);
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 0 24px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-card);
    position: sticky;
    top: 0;
    z-index: 50;
}
.btn-toggle-sidebar {
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    flex-shrink: 0;
}
.btn-toggle-sidebar:hover { background: var(--bg-hover); }
.page-title { font-size: 1.1rem; font-weight: 600; }
.content { padding: 24px; }

/* === Dashboard Cards === */
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.tool-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 20px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color var(--transition), transform 0.1s;
    position: relative;
}
.tool-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.tool-icon { font-size: 2rem; flex-shrink: 0; }
.tool-info h3 { font-size: 1rem; margin-bottom: 4px; }
.tool-info p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.4; }
.badge {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.badge-beta { background: #f59e0b20; color: #f59e0b; border: 1px solid #f59e0b40; }
.badge-nowe { background: #10b98120; color: #10b981; border: 1px solid #10b98140; }
.badge-wip  { background: #8b5cf620; color: #a78bfa; border: 1px solid #8b5cf640; }

/* === Login === */
.login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-container { width: 100%; max-width: 400px; padding: 16px; }
.login-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px; padding: 40px 32px; }
.login-header { text-align: center; margin-bottom: 32px; }
.logo-icon-large { font-size: 3rem; display: block; margin-bottom: 12px; }
.login-header h1 { font-size: 1.3rem; }
.login-header p { color: var(--text-muted); font-size: 0.9rem; }

/* === Forms === */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; font-size: 0.85rem; color: var(--text-muted); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 10px 12px; background: var(--bg); border: 1px solid var(--border);
    border-radius: var(--radius); color: var(--text); font-size: 0.95rem;
    transition: border-color var(--transition);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none; border-color: var(--primary);
}
.btn {
    display: inline-flex; align-items: center; gap: 8px; padding: 10px 20px;
    border: none; border-radius: var(--radius); font-size: 0.9rem; font-weight: 500;
    cursor: pointer; transition: background var(--transition), opacity var(--transition);
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-full { width: 100%; justify-content: center; }
.btn-secondary { background: var(--bg-hover); color: var(--text); }
.btn-secondary:hover { background: var(--border); }

/* === Alerts === */
.alert { padding: 12px 16px; border-radius: var(--radius); margin-bottom: 16px; font-size: 0.9rem; }
.alert-error  { background: #ef444420; color: #fca5a5; border: 1px solid #ef444440; }
.alert-success { background: #10b98120; color: #6ee7b7; border: 1px solid #10b98140; }
.alert-info   { background: #3b82f620; color: #93c5fd; border: 1px solid #3b82f640; }

/* === Tool page layout === */
.tool-header { margin-bottom: 24px; }
.tool-header h2 { font-size: 1.3rem; margin-bottom: 4px; }
.tool-header p { color: var(--text-muted); }

/* === File upload === */
.file-drop {
    border: 2px dashed var(--border); border-radius: var(--radius); padding: 40px;
    text-align: center; cursor: pointer; transition: border-color var(--transition), background var(--transition);
}
.file-drop:hover, .file-drop.dragover { border-color: var(--primary); background: #3b82f610; }

/* === Results === */
.result-card { background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 16px; }
.result-card h4 { margin-bottom: 8px; }

/* === Loading === */
.htmx-indicator { display: none; }
.htmx-request .htmx-indicator { display: inline-block; }
.spinner {
    width: 18px; height: 18px; border: 2px solid var(--border);
    border-top-color: var(--primary); border-radius: 50%;
    animation: spin 0.6s linear infinite; display: inline-block; vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* === Tables === */
table { width: 100%; border-collapse: collapse; }
th, td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 500; font-size: 0.85rem; }
tr:last-child td { border-bottom: none; }

/* === Responsive === */
@media (max-width: 768px) {
    /* On mobile sidebar acts as a drawer: starts collapsed (icon only) by default.
       When toggled open it floats over content. */
    .sidebar {
        width: var(--sidebar-w);
        transform: translateX(calc(-1 * var(--sidebar-w) + var(--sidebar-collapsed)));
        transition: transform var(--transition), width var(--transition);
    }
    .sidebar.collapsed {
        width: var(--sidebar-w);
        transform: translateX(calc(-1 * var(--sidebar-w) + var(--sidebar-collapsed)));
    }
    /* When sidebar is open on mobile — snap to full width and slide in */
    .sidebar:not(.collapsed) {
        transform: translateX(0);
    }
    .main-content {
        margin-left: var(--sidebar-collapsed);
        transition: margin-left var(--transition);
    }
    .tools-grid { grid-template-columns: 1fr; }
    .content { padding: 16px; }
}