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

:root {
    --font-family: 'Inter', sans-serif;
    --primary-color: #3b82f6; --primary-color-dark: #2563eb;
    --secondary-color: #f1f5f9; --secondary-color-dark: #e2e8f0;
    --background-color: #ffffff;
    --content-background: #f8fafc;
    --text-color: #0f172a; --text-color-light: #64748b;
    --border-color: #e2e8f0; --shadow-color: rgba(149, 157, 165, 0.1);
    --sidebar-bg: #1e293b; --sidebar-text: #cbd5e1; --sidebar-text-hover: #ffffff;
    --success-color: #22c55e; --danger-color: #ef4444; --warning-color: #f59e0b;
    --info-color: #3b82f6; --duplicate-color: #6366f1;
    --white: #fff; --black: #000;
}
body.dark-mode {
    --primary-color: #60a5fa; --primary-color-dark: #3b82f6;
    --secondary-color: #1e293b; --secondary-color-dark: #334155;
    --background-color: #0f172a;
    --content-background: #020617;
    --text-color: #e2e8f0; --text-color-light: #94a3b8;
    --border-color: #334155; --shadow-color: rgba(0, 0, 0, 0.2);
    --sidebar-bg: #1e293b;
}

/* === PODSTAWOWE STYLE I RESET === */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: var(--font-family);
    background-color: var(--secondary-color); color: var(--text-color); line-height: 1.6;
    padding: 0; transition: background-color 0.3s, color 0.3s;
    -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
}

/* === LOADER === */
#loader {
    position: fixed; inset: 0; background-color: var(--background-color);
    display: flex; align-items: center; justify-content: center; z-index: 9999;
    transition: opacity 0.5s, visibility 0.5s;
}
#loader.hidden { opacity: 0; visibility: hidden; }
.spinner {
    width: 50px; height: 50px; border: 5px solid var(--secondary-color-dark);
    border-top-color: var(--primary-color); border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }


/* === GŁÓWNY UKŁAD (SIDEBAR + CONTENT) === */
.main-container { display: flex; min-height: 100vh; }
.sidebar {
    width: 260px; background-color: var(--sidebar-bg); color: var(--sidebar-text);
    padding: 24px; display: flex; flex-direction: column; transition: background-color 0.3s; flex-shrink: 0;
}
.content {
    flex-grow: 1; padding: 32px; background-color: var(--content-background);
    transition: background-color 0.3s; overflow-y: auto; height: 100vh;
}

/* === SIDEBAR === */
.logo { font-size: 2rem; font-weight: 700; color: var(--white); margin-bottom: 32px; text-align: center; }
.main-nav { display: flex; flex-direction: column; gap: 8px; }
.sidebar-divider { height: 1px; background-color: var(--border-color); margin: 24px 0; opacity: 0.5; }
.sidebar-footer { margin-top: auto; }
.nav-button {
    display: flex; align-items: center; gap: 16px; padding: 12px 16px; border: none;
    background-color: transparent; color: var(--sidebar-text); font-size: 1rem; font-weight: 500;
    font-family: var(--font-family); text-align: left; border-radius: 8px; cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
}
.nav-button:hover { background-color: #334155; color: var(--sidebar-text-hover); }
.nav-button.active { background-color: var(--primary-color); color: var(--white); }
.nav-button svg { width: 24px; height: 24px; flex-shrink: 0; }

/* === GŁÓWNA TREŚĆ === */
.tab-content { display: none; animation: fadeIn 0.4s; }
.tab-content.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

.page-header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap; gap: 16px;
}
.page-header h2 { margin: 0; font-size: 1.8rem; }
.toolbar {
    display: flex; justify-content: space-between; align-items: center;
}
.filter-controls {
    display: flex;
    gap: 16px;
    align-items: center;
    flex-wrap: wrap;
}
.filter-controls label {
    font-weight: 500;
    color: var(--text-color-light);
}
.filter-controls select, .filter-controls input {
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--background-color);
    color: var(--text-color);
    font-family: var(--font-family);
    font-size: 0.9rem;
}

/* === KARTY I SEKCJE === */
.card {
    background-color: var(--background-color); padding: 24px; border-radius: 12px;
    border: 1px solid var(--border-color); box-shadow: 0 4px 6px -1px var(--shadow-color); margin-bottom: 24px;
}
.grid-container { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; }
.dashboard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; }
.dashboard-card h3 { color: var(--text-color-light); font-weight: 500; margin-bottom: 8px; }
.dashboard-card p { color: var(--text-color); font-size: 2rem; font-weight: 700; margin: 0; }
.dashboard-card .subtext { font-size: 0.9rem; color: var(--text-color-light); }
.low-stock-list { list-style: none; padding: 0; margin-top: 16px; }
.low-stock-list li { display: flex; justify-content: space-between; padding: 4px 0; }
.low-stock-list li span:last-child { font-weight: 600; color: var(--danger-color); }

/* === FORMULARZE I PRZYCISKI === */
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 500; margin-bottom: 8px; font-size: 0.9rem; color: var(--text-color-light); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 12px 16px; border: 1px solid var(--border-color); border-radius: 8px;
    font-size: 1rem; background-color: var(--background-color); color: var(--text-color); font-family: var(--font-family);
}
.form-group small { color: var(--text-color-light); font-size: 0.8rem; margin-top: 4px; display: block;}
.checkbox-group { display: flex; align-items: center; gap: 10px; }
.checkbox-group input { width: auto; }
.checkbox-group label { margin-bottom: 0; }

button, .button-secondary {
    padding: 12px 20px; border: none; border-radius: 8px; cursor: pointer;
    font-size: 1rem; font-weight: 600; font-family: var(--font-family);
    transition: all 0.2s; background-color: var(--primary-color); color: var(--white);
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
}
button:hover { background-color: var(--primary-color-dark); transform: translateY(-1px); box-shadow: 0 4px 8px rgba(0,0,0,0.1); }
button:disabled { background-color: var(--border-color); cursor: not-allowed; color: var(--text-color-light); transform: none; box-shadow: none; }
button:disabled:hover { background-color: var(--border-color); }
.button-secondary { background-color: var(--secondary-color-dark); color: var(--text-color); }
.button-secondary:hover { background-color: var(--border-color); }
.action-buttons { display: flex; gap: 8px; }
.action-buttons button { padding: 8px; font-size: 0; line-height: 0; }
.action-buttons svg { width: 18px; height: 18px; fill: var(--white); }
.edit-btn { background-color: var(--warning-color); }
.delete-btn { background-color: var(--danger-color); }
.report-btn, .pdf-btn { background-color: var(--info-color); }
.duplicate-btn { background-color: var(--duplicate-color); }
.convert-btn { background-color: var(--success-color); }
.purchase-btn { background-color: #16a34a; }

/* === TABELE === */
table { width: 100%; border-collapse: collapse; }
th, td { padding: 16px; border-bottom: 1px solid var(--border-color); text-align: left; vertical-align: middle; }
thead { background-color: var(--secondary-color); }
th { color: var(--text-color-light); font-weight: 500; font-size: 0.85rem; text-transform: uppercase; }
td small { color: var(--text-color-light); }
tbody tr:hover { background-color: var(--secondary-color); }
.low-stock-warning { background-color: color-mix(in srgb, var(--danger-color) 15%, transparent); }
body.dark-mode .low-stock-warning { background-color: color-mix(in srgb, var(--danger-color) 25%, transparent); }

.component-tag {
    background-color: var(--secondary-color-dark);
    color: var(--text-color-light);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 12px;
    margin-left: 8px;
    display: inline-block;
}

/* === TRYB CIEMNY i UTILITIES === */
.theme-switch-wrapper { display: flex; align-items: center; margin-top: 16px; }
.theme-switch { display: inline-block; height: 28px; position: relative; width: 50px; }
.theme-switch input { display: none; }
.slider { background-color: #475569; position: absolute; inset: 0; cursor: pointer; transition: .4s; border-radius: 28px; }
.slider:before { background-color: var(--white); position: absolute; content: ""; height: 20px; width: 20px; left: 4px; bottom: 4px; transition: .4s; border-radius: 50%; }
input:checked + .slider { background-color: var(--primary-color); }
input:checked + .slider:before { transform: translateX(22px); }

/* === MODAL & POWIADOMIENIA === */
.modal { display: none; position: fixed; z-index: 1000; inset: 0; width: 100%; height: 100%; overflow: auto; background-color: rgba(0,0,0,0.6); align-items: center; justify-content: center; }
.modal-content { background-color: var(--background-color); padding: 32px; width: 90%; max-width: 850px; border-radius: 12px; position: relative; animation: slideInModal 0.4s; }
@keyframes slideInModal { from { transform: translateY(-30px) scale(0.95); opacity: 0; } to { transform: translateY(0) scale(1); opacity: 1; } }
.close-button { color: var(--text-color-light); position: absolute; top: 16px; right: 24px; font-size: 28px; font-weight: bold; cursor: pointer; }
.modal-body { max-height: 70vh; overflow-y: auto; padding-right: 16px; margin-top: 16px; }
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.result-item { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--border-color); }
.result-item:last-child { border-bottom: none; }

/* === STYLE DLA KOMPONENTÓW & FILAMENTÓW W FORMULARZU === */
.segmented-control {
    display: inline-flex;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 4px;
    background-color: var(--secondary-color);
}
.segmented-control button {
    flex: 1;
    padding: 6px 16px;
    background-color: transparent;
    color: var(--text-color-light);
    font-weight: 600;
    font-size: 0.9rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s;
}
.segmented-control button.active {
    background-color: var(--background-color);
    color: var(--text-color);
    box-shadow: 0 1px 3px var(--shadow-color);
}
.component-item, .filament-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--secondary-color);
    padding: 10px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    margin-bottom: 10px;
}
.component-item > *, .filament-item > * { flex: 1; }
.component-item .cost, .component-item .quantity, .filament-item .usage { flex: 0 0 100px; }
.component-item .delete-btn, .filament-item .delete-btn { flex: 0 0 auto; }
body.dark-mode .component-item, body.dark-mode .filament-item { background-color: #020617; }
.component-item input, .component-item select, .filament-item input, .filament-item select { padding: 8px 10px !important; font-size: 0.9rem !important; }

#toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 2000; display: flex; flex-direction: column; gap: 10px; }
.toast { padding: 16px 24px; border-radius: 8px; color: #fff; font-weight: 600; box-shadow: 0 4px 12px rgba(0,0,0,0.2); animation: slideInToast 0.5s forwards, fadeOutToast 0.5s 4s forwards; }
.toast.success { background-color: var(--success-color); } .toast.error { background-color: var(--danger-color); }
@keyframes slideInToast { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeOutToast { from { opacity: 1; } to { opacity: 0; transform: translateY(20px); } }

/* === IMPORT/EXPORT === */
.data-io { position: fixed; bottom: 24px; right: 32px; display: flex; gap: 12px; z-index: 100; }
.data-io button, .data-io label { padding: 12px; border-radius: 50%; width: 52px; height: 52px; display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
.data-io svg { width: 24px; height: 24px; fill: var(--white); }

.logout-button {
    background-color: transparent !important;
    border: 1px solid var(--danger-color) !important;
    color: var(--danger-color) !important;
    margin-top: 10px;
}
.logout-button:hover {
    background-color: var(--danger-color) !important;
    color: var(--white) !important;
}
.logout-button svg {
    fill: var(--danger-color);
    transition: fill 0.2s;
}
.logout-button:hover svg {
    fill: var(--white);
}

.invoice-btn { background-color: #8b5cf6; }
.action-buttons .invoice-btn svg { fill: var(--white); }