:root {
    /* Base Primitives - Dark (Default) */
    --p-dark-bg: #0f172a;
    --p-dark-bg-alt: #1e293b;
    --p-dark-glass: rgba(30, 41, 59, 0.7);
    --p-primary: #3b82f6;
    --p-primary-hover: #2563eb;
    --p-secondary: #64748b;
    --p-text-light: #f1f5f9;
    --p-text-muted: #94a3b8;
    --p-success: #2ecc71;
    --p-danger: #ef5350;
    --p-border: rgba(255, 255, 255, 0.1);

    /* Semantic Variables Mapping (Dark Default) */
    --bg-main: var(--p-dark-bg);
    --bg-gradient-start: #1e293b;
    --bg-gradient-end: #0f172a;
    --bg-sidebar: rgba(15, 17, 42, 0.95);
    --bg-glass: var(--p-dark-glass);
    --bg-card: rgba(30, 41, 59, 0.9);
    /* Derived from glass/hover styles */
    --bg-card-hover: rgba(30, 41, 59, 0.9);
    --bg-input: rgba(0, 0, 0, 0.2);
    --bg-item-hover: rgba(255, 255, 255, 0.05);
    --bg-item-active: rgba(59, 130, 246, 0.1);

    --text-main: var(--p-text-light);
    --text-secondary: var(--p-secondary);
    --text-muted: var(--p-text-muted);
    --text-inverse: #ffffff;
    /* For buttons etc */

    --border-color: var(--p-border);
    --border-card: rgba(255, 255, 255, 0.05);
    --border-card-hover: rgba(59, 130, 246, 0.3);

    --primary: var(--p-primary);
    --primary-hover: var(--p-primary-hover);
    --secondary: var(--p-secondary);
    --success: var(--p-success);
    --danger: var(--p-danger);

    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-modal: 0 20px 50px rgba(0, 0, 0, 0.5);
    --bg-main-overlay: radial-gradient(circle at bottom left, rgba(59, 130, 246, 0.05), transparent 40%);
}

[data-theme="light"] {
    /* Base Primitives - Light */
    --p-light-bg: #f8fafc;
    --p-light-bg-alt: #ffffff;
    --p-light-text-main: #0f172a;
    --p-light-text-muted: #64748b;
    --p-light-border: #e2e8f0;

    /* Semantic Variables Mapping (Light) */
    --bg-main: #f1f5f9;
    /* Slate 100 */
    --bg-gradient-start: #f8fafc;
    --bg-gradient-end: #e2e8f0;
    --bg-sidebar: #ffffff;
    --bg-glass: rgba(255, 255, 255, 0.8);
    --bg-card: #ffffff;
    --bg-card-hover: #ffffff;
    --bg-input: #f8fafc;
    --bg-item-hover: #f1f5f9;
    --bg-item-active: rgba(59, 130, 246, 0.1);

    --text-main: var(--p-light-text-main);
    --text-secondary: var(--p-light-text-muted);
    --text-muted: var(--p-light-text-muted);

    --border-color: var(--p-light-border);
    --border-card: var(--p-light-border);
    --border-card-hover: var(--primary);

    --shadow-card: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-modal: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --bg-main-overlay: radial-gradient(circle at bottom left, rgba(59, 130, 246, 0.03), transparent 40%);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', system-ui, sans-serif;
}

body {
    background-color: var(--bg-main);
    /* For dark theme we keep the subtle gradient, for light it might need adjustment but using semantic vars */
    background-image: linear-gradient(to bottom right, var(--bg-gradient-start), var(--bg-gradient-end));
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
    transition: background-color 0.3s, color 0.3s;
}

.app-container {
    display: flex;
    height: 100%;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 1rem;
    z-index: 10;
    transition: background-color 0.3s, border-color 0.3s;
}

.logo-area {
    padding: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.logo-icon {
    width: 50px;
    height: 50px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    /* Logo icon background usually handles its own contrast or is image */
}

.logo-area h1 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
}

.nav-menu {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-item {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 1rem;
    text-align: left;
    font-size: 1rem;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

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

.nav-item.active {
    background: var(--bg-item-active);
    color: var(--primary);
    font-weight: 600;
}

.user-profile {
    padding: 1rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.avatar {
    width: 36px;
    height: 36px;
    background: var(--secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    /* Avatar text always white on secondary bg */
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-info .name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-main);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-main-overlay);
    position: relative;
    transition: background 0.3s;
}

.top-bar {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.top-bar h2 {
    color: var(--text-main);
}

.view-container {
    flex: 1;
    padding: 0 2rem 2rem 2rem;
    overflow-y: auto;
}

/* Glass Panels */
.glass-panel {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-card);
}

/* Dashboard Grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.task-card {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s, background-color 0.3s, border-color 0.3s;
    border: 1px solid var(--border-card);
    background-color: var(--bg-card);
    border-radius: 8px;
    /* Added implicit radius */
    box-shadow: var(--shadow-card);
}

.task-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
    border-color: var(--border-card-hover);
}

.task-card.status-done {
    border-left: 4px solid var(--success);
}

.task-card.status-pending {
    border-left: 4px solid var(--primary);
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.8rem;
}

.client-name {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-main);
}

.task-details {
    display: flex;
    gap: 0.8rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 1rem;
    align-items: center;
}

.task-badge {
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-pending {
    background: rgba(59, 130, 246, 0.2);
    color: var(--primary);
}

.badge-done {
    background: rgba(46, 204, 113, 0.2);
    color: var(--success);
}

/* Buttons */
.btn {
    border: none;
    border-radius: 6px;
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: filter 0.2s;
}

.btn:hover {
    filter: brightness(110%);
}

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

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

.btn-text {
    background: transparent;
    color: var(--text-muted);
    padding: 0.4rem;
}

.btn-text:hover {
    color: var(--text-main);
}

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

.btn-sm {
    padding: 0.3rem 0.8rem;
    font-size: 0.8rem;
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    backdrop-filter: blur(4px);
    z-index: 100;
}

.modal.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    width: 500px;
    max-width: 90%;
    padding: 2rem;
    box-shadow: var(--shadow-modal);
    /* Glass panel styling applied via class, ensuring bg fits theme */
    background: var(--bg-glass);
    color: var(--text-main);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
}

.modal-header h3 {
    color: var(--text-main);
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.2rem;
    cursor: pointer;
}

.close-btn:hover {
    color: var(--text-main);
}


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

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

input,
select,
textarea {
    width: 100%;
    padding: 0.8rem;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-main);
    font-size: 1rem;
    transition: border-color 0.2s;
}

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

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.configs-section {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.configs-section h4 {
    margin-bottom: 1rem;
    color: var(--text-muted);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
}

/* Utils */
.text-danger {
    color: var(--danger) !important;
}

/* Sidebar Stats */
.sidebar-divider {
    height: 1px;
    background-color: var(--border-color);
    margin: 1.5rem 0;
}

.sidebar-stats {
    padding: 0 0.5rem;
}

.sidebar-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.stats-row {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.stat-item {
    flex: 1;
    background: var(--bg-item-hover);
    border-radius: 8px;
    padding: 0.5rem;
    text-align: center;
    border: 1px solid var(--border-color);
}

.stat-label {
    display: block;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-bottom: 0.2rem;
}

.stat-value {
    display: block;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary);
}

.btn-sidebar-toggle {
    width: 100%;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.6rem;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.btn-sidebar-toggle:hover {
    background: var(--bg-item-hover);
    color: var(--text-main);
}

.btn-sidebar-toggle.active {
    background: var(--bg-item-active);
    border-color: var(--primary);
    color: var(--primary);
}

.btn-theme-toggle {
    background: var(--bg-item-hover);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.4rem;
    border-radius: 50%;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 1.1rem;
    width: 36px;
    height: 36px;
    margin-right: 0.8rem;
}

.btn-theme-toggle:hover {
    background: var(--bg-item-active);
    color: var(--primary);
    border-color: var(--primary);
    transform: rotate(15deg);
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

.btn-logout {
    background: transparent;
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 0.4rem;
    border-radius: 6px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    font-size: 1rem;
    width: 32px;
    height: 32px;
}

.btn-logout:hover {
    background: var(--danger);
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 6px rgba(239, 83, 80, 0.2);
}