:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f4f5f7;
    --bg-accent: #ebecf0;
    --text-primary: #172b4d;
    --text-secondary: #6b778c;
    --accent-color: #0052cc;
    --accent-hover: #0747a6;
    --success: #36b37e;
    --warning: #ffab00;
    --danger: #ff5630;
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-border: #dfe1e6;
    --font-main: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --card-shadow: 0 1px 1px rgba(9, 30, 66, 0.25), 0 0 1px rgba(9, 30, 66, 0.31);
}

/* Login System Styles - Professional Light */
.login-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #f4f5f7;
    background-image: linear-gradient(135deg, #0052cc 0%, #2684ff 100%);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.login-overlay.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translateY(-20px);
}

.login-card {
    background: #ffffff;
    border-radius: 8px;
    padding: 48px;
    width: 400px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.login-input {
    width: 100%;
    background: #fafbfc;
    border: 2px solid #dfe1e6;
    color: var(--text-primary);
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 16px;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.login-input:focus {
    border-color: var(--accent-color);
    background: #ffffff;
    outline: none;
}

.login-btn {
    width: 100%;
    padding: 12px;
    border-radius: 4px;
    border: none;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.1s;
    margin-top: 8px;
}

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

.btn-primary:hover {
    background: var(--accent-hover);
}

.role-select-group {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
}

.role-option {
    flex: 1;
    padding: 10px;
    border: 2px solid #dfe1e6;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: all 0.1s;
    background: #fafbfc;
}

.role-option.active {
    background: #deebff;
    border-color: var(--accent-color);
    color: var(--accent-color);
    font-weight: 600;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
}

/* Layout */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

/* Sidebar - Jira Style */
.sidebar {
    width: 240px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--glass-border);
    display: flex;
    flex-direction: column;
    padding: 24px 12px;
    transition: all 0.3s ease;
}

.logo {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 32px;
    padding: 0 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--accent-color);
}

.nav-links {
    list-style: none;
    flex-grow: 1;
}

.nav-item {
    margin-bottom: 4px;
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    color: var(--text-primary);
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.1s ease;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
}

.nav-link:hover {
    background-color: #ebecf0;
    color: var(--accent-color);
}

.nav-link.active {
    background-color: #deebff;
    color: var(--accent-color);
}

.nav-link i {
    margin-right: 12px;
    font-size: 1.1rem;
    width: 20px;
}

/* Main Content */
.main-content {
    flex-grow: 1;
    overflow-y: auto;
    background-color: var(--bg-primary);
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 24px;
    background: #ffffff;
    border-bottom: 1px solid var(--glass-border);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.1s;
}

.user-profile:hover {
    background: #ebecf0;
}

/* Dashboard Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 24px;
    padding: 24px;
}

.card {
    background: #ffffff;
    border: 1px solid var(--glass-border);
    border-radius: 3px;
    padding: 24px;
    box-shadow: var(--card-shadow);
    transition: box-shadow 0.2s;
}

.card:hover {
    box-shadow: 0 4px 8px -2px rgba(9, 30, 66, 0.25), 0 0 1px rgba(9, 30, 66, 0.31);
}

.card-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Task Management */
.task-column {
    background: #f4f5f7;
    border-radius: 4px;
    padding: 12px;
    min-height: 500px;
}

.task-column h2 {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
    padding: 0 8px;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.4s ease-out forwards;
}

/* Role Badges */
.role-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.role-admin {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.role-member {
    background: rgba(16, 185, 129, 0.2);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* Progress Mini Bar */
.mini-bar-container {
    height: 6px;
    width: 100%;
    background: var(--bg-accent);
    border-radius: 3px;
    margin: 8px 0;
}

.mini-bar-fill {
    height: 100%;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent-color), #06b6d4);
}

/* Management Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.data-table th {
    text-align: left;
    padding: 12px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--glass-border);
}

.data-table td {
    padding: 16px 12px;
    border-bottom: 1px solid var(--glass-border);
}

/* Stats Widget */
.stat-item {
    text-align: center;
    padding: 1rem;
    border-right: 1px solid var(--glass-border);
}

.stat-item:last-child {
    border-right: none;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Contextual Sidebar */
.nav-section-title {
    font-size: 0.7rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin: 25px 0 10px 10px;
    font-weight: 700;
    opacity: 0.6;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 0.9rem;
}

.breadcrumb span {
    cursor: pointer;
    color: var(--text-secondary);
}

.breadcrumb span:hover {
    color: var(--text-primary);
}

.breadcrumb i {
    font-size: 0.7rem;
    color: var(--glass-border);
}

/* Folder View */
.folder-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 10px;
}

.folder-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 30px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.folder-card:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--accent-color);
    transform: translateY(-5px);
}

.folder-icon {
    font-size: 3rem;
    color: #f59e0b;
    margin-bottom: 15px;
    display: block;
}

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

.folder-info {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 5px;
}

/* Document List */
.doc-card {
    background: var(--glass-bg);
    border-radius: 16px;
    padding: 15px 20px;
    margin-bottom: 12px;
    border: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.2s;
}

.doc-card:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--accent-color);
}

/* Editor Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    justify-content: flex-end;
    visibility: hidden;
    opacity: 0;
    transition: all 0.3s;
}

.overlay.active {
    visibility: visible;
    opacity: 1;
}

.editor-panel {
    width: 600px;
    background: #ffffff;
    height: 100%;
    padding: 40px;
    transform: translateX(100%);
    transition: transform 0.4s ease;
    border-left: 1px solid var(--glass-border);
    box-shadow: -4px 0 12px rgba(9, 30, 66, 0.15);
}

.overlay.active .editor-panel {
    transform: translateX(0);
}