/* =====================================================
   ERP SYSTEM v2.0 - GŁÓWNY STYL
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    /* Paleta kolorów */
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d27;
    --bg-card: #1e2130;
    --bg-card-hover: #252840;
    --bg-input: #161824;
    --border-color: #2a2d3e;
    --border-light: #333654;
    
    --text-primary: #e8eaed;
    --text-secondary: #9aa0b8;
    --text-muted: #5f6580;
    --text-white: #ffffff;
    
    --accent-blue: #4f8cff;
    --accent-blue-light: #6fa3ff;
    --accent-blue-dark: #3a6fd8;
    --accent-blue-bg: rgba(79, 140, 255, 0.1);
    
    --accent-green: #34d399;
    --accent-green-bg: rgba(52, 211, 153, 0.1);
    --accent-red: #f87171;
    --accent-red-bg: rgba(248, 113, 113, 0.1);
    --accent-yellow: #fbbf24;
    --accent-yellow-bg: rgba(251, 191, 36, 0.1);
    --accent-purple: #a78bfa;
    --accent-purple-bg: rgba(167, 139, 250, 0.1);
    --accent-orange: #fb923c;
    --accent-orange-bg: rgba(251, 146, 60, 0.1);
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
    
    --sidebar-width: 280px;
    --header-height: 64px;
    
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow: hidden;
    height: 100vh;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent-blue-light);
}

/* ===== LAYOUT ===== */
.app-layout {
    display: flex;
    height: 100vh;
}

/* ===== SIDEBAR ===== */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    z-index: 100;
    transition: var(--transition);
}

.sidebar-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 16px;
    color: white;
    flex-shrink: 0;
}

.sidebar-brand {
    display: flex;
    flex-direction: column;
}

.sidebar-brand-name {
    font-weight: 700;
    font-size: 16px;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.sidebar-brand-version {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.sidebar-nav {
    flex: 1;
    padding: 12px;
    overflow-y: auto;
}

.sidebar-section {
    margin-bottom: 8px;
}

.sidebar-section-label {
    padding: 8px 12px 6px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 13.5px;
    transition: var(--transition);
    position: relative;
}

.sidebar-link:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.sidebar-link.active {
    background: var(--accent-blue-bg);
    color: var(--accent-blue);
}

.sidebar-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--accent-blue);
    border-radius: 0 3px 3px 0;
}

.sidebar-link-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.sidebar-link-badge {
    margin-left: auto;
    background: var(--accent-red);
    color: white;
    font-size: 10px;
    font-weight: 700;
    padding: 2px 7px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
}

.sidebar-user {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    transition: var(--transition);
}

.sidebar-user:hover {
    background: var(--bg-card);
}

.sidebar-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 14px;
    color: white;
    flex-shrink: 0;
}

.sidebar-user-info {
    flex: 1;
    min-width: 0;
}

.sidebar-user-name {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-user-role {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: capitalize;
}

/* ===== MAIN CONTENT ===== */
.main-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    overflow: hidden;
}

/* Top Header */
.top-header {
    height: var(--header-height);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    flex-shrink: 0;
}

.page-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.page-title-sub {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 400;
    margin-left: 12px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 16px;
    transition: var(--transition);
    position: relative;
}

.header-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.header-btn .badge {
    position: absolute;
    top: -4px;
    right: -4px;
    width: 18px;
    height: 18px;
    background: var(--accent-red);
    color: white;
    font-size: 10px;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--bg-secondary);
}

/* Content Area */
.content-area {
    flex: 1;
    padding: 28px;
    overflow-y: auto;
    overflow-x: hidden;
}

.content-area::-webkit-scrollbar {
    width: 6px;
}

.content-area::-webkit-scrollbar-track {
    background: transparent;
}

.content-area::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.content-area::-webkit-scrollbar-thumb:hover {
    background: var(--border-light);
}

/* ===== CARDS ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    border-color: var(--border-light);
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.card-title-icon {
    font-size: 18px;
}

.card-body {
    padding: 24px;
}

.card-body-flush {
    padding: 0;
}

/* ===== STAT CARDS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--border-light);
    transform: translateY(-1px);
}

.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.stat-icon.blue { background: var(--accent-blue-bg); }
.stat-icon.green { background: var(--accent-green-bg); }
.stat-icon.yellow { background: var(--accent-yellow-bg); }
.stat-icon.red { background: var(--accent-red-bg); }
.stat-icon.purple { background: var(--accent-purple-bg); }
.stat-icon.orange { background: var(--accent-orange-bg); }

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
    margin-bottom: 4px;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
    letter-spacing: -1px;
}

.stat-change {
    font-size: 12px;
    margin-top: 4px;
    font-weight: 500;
}

.stat-change.up { color: var(--accent-green); }
.stat-change.down { color: var(--accent-red); }

/* ===== TABLES ===== */
.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table thead th {
    padding: 12px 16px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    background: var(--bg-input);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background: var(--bg-card-hover);
}

.data-table tbody tr:last-child {
    border-bottom: none;
}

.data-table tbody td {
    padding: 14px 16px;
    font-size: 13px;
    color: var(--text-secondary);
    vertical-align: middle;
}

.data-table .user-cell {
    display: flex;
    align-items: center;
    gap: 10px;
}

.data-table .user-avatar-sm {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 12px;
    color: white;
    flex-shrink: 0;
}

.data-table .user-name {
    font-weight: 600;
    color: var(--text-primary);
}

.data-table .user-email {
    font-size: 11px;
    color: var(--text-muted);
}

/* ===== BADGES ===== */
.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    white-space: nowrap;
}

.badge-status::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.badge-status.pending { background: var(--accent-yellow-bg); color: var(--accent-yellow); }
.badge-status.pending::before { background: var(--accent-yellow); }

.badge-status.approved { background: var(--accent-green-bg); color: var(--accent-green); }
.badge-status.approved::before { background: var(--accent-green); }

.badge-status.rejected { background: var(--accent-red-bg); color: var(--accent-red); }
.badge-status.rejected::before { background: var(--accent-red); }

.badge-status.active { background: var(--accent-blue-bg); color: var(--accent-blue); }
.badge-status.active::before { background: var(--accent-blue); }

.badge-status.info { background: var(--accent-purple-bg); color: var(--accent-purple); }
.badge-status.info::before { background: var(--accent-purple); }

.badge-priority {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-priority.low { background: var(--accent-blue-bg); color: var(--accent-blue); }
.badge-priority.medium { background: var(--accent-yellow-bg); color: var(--accent-yellow); }
.badge-priority.high { background: var(--accent-orange-bg); color: var(--accent-orange); }
.badge-priority.critical { background: var(--accent-red-bg); color: var(--accent-red); }

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    transition: var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px var(--accent-blue-bg);
}

.form-control::placeholder {
    color: var(--text-muted);
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
}

select.form-control {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%239aa0b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.form-inline {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    text-decoration: none;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--accent-blue);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-blue-dark);
    color: white;
}

.btn-success {
    background: var(--accent-green);
    color: var(--bg-primary);
}

.btn-success:hover {
    opacity: 0.9;
    color: var(--bg-primary);
}

.btn-danger {
    background: var(--accent-red);
    color: white;
}

.btn-danger:hover {
    opacity: 0.9;
    color: white;
}

.btn-warning {
    background: var(--accent-yellow);
    color: var(--bg-primary);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-ghost:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
}

.btn-xs {
    padding: 4px 10px;
    font-size: 11px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-md);
}

.btn-group {
    display: flex;
    gap: 6px;
}

/* ===== FLASH MESSAGES ===== */
.flash-message {
    padding: 14px 20px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    font-weight: 500;
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideDown 0.3s ease;
}

.flash-message.success {
    background: var(--accent-green-bg);
    color: var(--accent-green);
    border: 1px solid rgba(52, 211, 153, 0.2);
}

.flash-message.error {
    background: var(--accent-red-bg);
    color: var(--accent-red);
    border: 1px solid rgba(248, 113, 113, 0.2);
}

.flash-message.warning {
    background: var(--accent-yellow-bg);
    color: var(--accent-yellow);
    border: 1px solid rgba(251, 191, 36, 0.2);
}

.flash-message.info {
    background: var(--accent-blue-bg);
    color: var(--accent-blue);
    border: 1px solid rgba(79, 140, 255, 0.2);
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== GRID LAYOUTS ===== */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.grid-sidebar {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: 20px;
}

.stack {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* ===== KANBAN BOARD ===== */
.kanban-board {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    padding-bottom: 16px;
    min-height: 500px;
}

.kanban-column {
    min-width: 280px;
    max-width: 320px;
    flex: 1;
    background: var(--bg-input);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
}

.kanban-column-header {
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--border-color);
}

.kanban-column-title {
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.kanban-count {
    background: var(--border-color);
    color: var(--text-muted);
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
}

.kanban-column-body {
    padding: 12px;
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.kanban-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.kanban-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.kanban-card-title {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.kanban-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 11px;
    color: var(--text-muted);
}

/* ===== CHAT STYLES ===== */
.chat-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 0;
    height: calc(100vh - var(--header-height) - 56px);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.chat-contacts {
    background: var(--bg-card);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.chat-contacts-header {
    padding: 18px 20px;
    border-bottom: 1px solid var(--border-color);
}

.chat-contacts-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.chat-contacts-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.chat-contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.chat-contact-item:hover {
    background: var(--bg-card-hover);
    color: inherit;
}

.chat-contact-item.active {
    background: var(--accent-blue-bg);
}

.chat-main {
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
}

.chat-main-header {
    padding: 16px 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-messages {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-bubble {
    max-width: 65%;
    display: flex;
    flex-direction: column;
}

.chat-bubble.me {
    align-self: flex-end;
}

.chat-bubble.other {
    align-self: flex-start;
}

.chat-bubble-content {
    padding: 10px 16px;
    border-radius: 18px;
    font-size: 14px;
    word-wrap: break-word;
    line-height: 1.5;
}

.chat-bubble.me .chat-bubble-content {
    background: var(--accent-blue);
    color: white;
    border-bottom-right-radius: 4px;
}

.chat-bubble.other .chat-bubble-content {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
}

.chat-bubble-time {
    font-size: 10px;
    color: var(--text-muted);
    margin-top: 4px;
    padding: 0 6px;
}

.chat-bubble.me .chat-bubble-time {
    align-self: flex-end;
}

.chat-input-area {
    padding: 16px 24px;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
    align-items: center;
}

.chat-input-area input {
    flex: 1;
    padding: 12px 18px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}

.chat-input-area input:focus {
    border-color: var(--accent-blue);
}

/* ===== ANNOUNCEMENT BOARD ===== */
.announcement {
    padding: 16px 20px;
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent-blue);
    background: var(--bg-input);
    position: relative;
    transition: var(--transition);
}

.announcement:hover {
    background: var(--bg-card-hover);
}

.announcement.important {
    border-left-color: var(--accent-red);
    background: var(--accent-red-bg);
}

.announcement-meta {
    font-size: 11px;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.announcement-text {
    font-size: 14px;
    color: var(--text-primary);
    white-space: pre-wrap;
    line-height: 1.6;
}

.announcement-delete {
    position: absolute;
    top: 12px;
    right: 12px;
    background: transparent;
    border: 1px solid var(--accent-red);
    color: var(--accent-red);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 11px;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.announcement-delete:hover {
    background: var(--accent-red);
    color: white;
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state-text {
    font-size: 15px;
    font-weight: 500;
}

.empty-state-sub {
    font-size: 13px;
    margin-top: 6px;
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    animation: slideUp 0.3s;
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 16px;
    font-weight: 700;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--bg-input);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--accent-red-bg);
    color: var(--accent-red);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== PROGRESS BAR ===== */
.progress-bar {
    height: 6px;
    background: var(--bg-input);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.5s ease;
}

.progress-bar-fill.blue { background: var(--accent-blue); }
.progress-bar-fill.green { background: var(--accent-green); }
.progress-bar-fill.yellow { background: var(--accent-yellow); }
.progress-bar-fill.red { background: var(--accent-red); }

/* ===== TABS ===== */
.tabs {
    display: flex;
    gap: 4px;
    padding: 4px;
    background: var(--bg-input);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
}

.tab {
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
    border: none;
    background: transparent;
    font-family: inherit;
}

.tab:hover {
    color: var(--text-secondary);
}

.tab.active {
    background: var(--bg-card);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

/* ===== UTILITIES ===== */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-primary { color: var(--accent-blue); }
.text-success { color: var(--accent-green); }
.text-danger { color: var(--accent-red); }
.text-warning { color: var(--accent-yellow); }
.text-bold { font-weight: 700; }
.text-sm { font-size: 12px; }
.text-xs { font-size: 11px; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-1 { flex: 1; }
.flex-wrap { flex-wrap: wrap; }

.hidden { display: none !important; }

/* ===== RESPONSIVE ===== */
@media (max-width: 1200px) {
    .grid-2 { grid-template-columns: 1fr; }
    .grid-3 { grid-template-columns: 1fr 1fr; }
    .grid-sidebar { grid-template-columns: 1fr; }
}

@media (max-width: 900px) {
    .sidebar { width: 70px; }
    .sidebar-brand, .sidebar-link span, .sidebar-section-label, 
    .sidebar-user-info, .sidebar-link-badge { display: none; }
    .sidebar-link { justify-content: center; padding: 12px; }
    .sidebar-header { justify-content: center; padding: 16px; }
    .sidebar-user { justify-content: center; }
    .kanban-board { flex-direction: column; }
    .kanban-column { max-width: none; min-width: 0; }
    .chat-layout { grid-template-columns: 1fr; }
    .chat-contacts { display: none; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}

/* ===== LOGIN PAGE ===== */
.login-page {
    min-height: 100vh;
    display: flex;
    overflow: auto;
}

.login-page body {
    overflow: auto;
}

.login-visual {
    flex: 1;
    background: linear-gradient(135deg, #1a1d27 0%, #0f1117 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.login-visual::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(79, 140, 255, 0.08) 0%, transparent 70%);
    top: 20%;
    left: 20%;
}

.login-visual::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(167, 139, 250, 0.06) 0%, transparent 70%);
    bottom: 10%;
    right: 10%;
}

.login-visual-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 40px;
}

.login-visual-logo {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    font-weight: 800;
    color: white;
    margin: 0 auto 24px;
}

.login-visual h1 {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.login-visual p {
    color: var(--text-muted);
    font-size: 15px;
}

.login-form-side {
    width: 480px;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    border-left: 1px solid var(--border-color);
}

.login-form-wrapper {
    width: 100%;
    max-width: 360px;
}

.login-form-wrapper h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.login-form-wrapper .subtitle {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 32px;
}

/* ===== NOTIFICATION DROPDOWN ===== */
.notification-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 360px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    max-height: 400px;
    overflow-y: auto;
}

.notification-item {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
}

.notification-item:hover {
    background: var(--bg-card-hover);
}

.notification-item:last-child {
    border-bottom: none;
}

.notification-item.unread {
    border-left: 3px solid var(--accent-blue);
}

/* Avatar Colors */
.avatar-1 { background: linear-gradient(135deg, #4f8cff, #3a6fd8); }
.avatar-2 { background: linear-gradient(135deg, #34d399, #059669); }
.avatar-3 { background: linear-gradient(135deg, #a78bfa, #7c3aed); }
.avatar-4 { background: linear-gradient(135deg, #fb923c, #ea580c); }
.avatar-5 { background: linear-gradient(135deg, #f87171, #dc2626); }
.avatar-6 { background: linear-gradient(135deg, #fbbf24, #d97706); }