@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
    --bg-main: #F4F5F7;
    --bg-card: #FFFFFF;
    --bg-column: #F9FAFB;
    --text-main: #111827;
    --text-muted: #6B7280;
    --accent: #5f2dfe;
    --accent-hover: #4c24cc;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --border: #E5E7EB;
    --glass-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --glass-backdrop: blur(10px);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Layout */
.app-container {
    display: flex;
    flex: 1;
    height: 100vh;
    overflow: hidden;
}

.sidebar {
    width: 260px;
    background: var(--bg-card);
    backdrop-filter: var(--glass-backdrop);
    border-right: 1px solid var(--border);
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
}

.sidebar h2 {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    font-weight: 700;
    color: var(--text-main);
    text-align: center;
    letter-spacing: 1px;
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    padding: 0.8rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links a:hover, .nav-links a.active {
    background: rgba(95, 45, 254, 0.1);
    color: var(--accent);
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.header {
    height: 70px;
    background: var(--bg-card);
    backdrop-filter: var(--glass-backdrop);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2rem;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.role-badge {
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent);
    padding: 0.2rem 0.6rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

/* Kanban Board */
.board-container {
    flex: 1;
    padding: 1.5rem;
    overflow-x: auto;
    display: flex;
    gap: 1.5rem;
}

.board-column {
    min-width: 300px;
    width: 300px;
    background: var(--bg-column);
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
    max-height: 100%;
}

.column-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.column-count {
    background: var(--bg-card);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
}

.column-body {
    padding: 1rem;
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.task-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1rem;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    backdrop-filter: var(--glass-backdrop);
}

.task-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.05);
    border-color: var(--accent);
}

.task-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
    line-height: 1.4;
}

.task-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.8rem;
}

.tag {
    background: var(--bg-main);
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid var(--border);
}

.tag.warning {
    color: var(--warning);
    border-color: rgba(245, 158, 11, 0.3);
}

.tag.danger {
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.3);
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 1.2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.form-control {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 0.8rem 1rem;
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(95, 45, 254, 0.2);
}

.btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

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

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

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

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

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

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
}

.modal-body {
    padding: 1.5rem;
}

/* Admin Tables */
.table-container {
    padding: 2rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

th {
    background: var(--bg-column);
    font-weight: 600;
    color: var(--text-muted);
}

.auth-container {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-main);
}

.auth-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: 3rem;
    border-radius: 20px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
}

.auth-card h1 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.8rem;
    color: var(--text-main);
}

/* Nav Pills for Dashboard */
.nav-pill {
    padding: 0.6rem 1.2rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-pill:hover {
    background: var(--bg-main);
    color: var(--text-main);
}

.nav-pill.active {
    background: rgba(95, 45, 254, 0.1);
    border-color: var(--accent);
    color: var(--accent);
}