/* KUBEVOICE - Main Stylesheet */

/* CSS Variables */
:root {
    /* Colors */
    --primary: #2563eb;
    --primary-dark: #1e40af;
    --secondary: #10b981;
    --accent: #f59e0b;

    /* Backgrounds */
    --bg-primary: #ffffff;
    --bg-secondary: #f3f4f6;
    --bg-tertiary: #e5e7eb;
    --bg-dark: #1f2937;

    /* Text */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-light: #9ca3af;

    /* Status Colors */
    --status-pending: #f59e0b;
    --status-progress: #3b82f6;
    --status-done: #10b981;
    --status-error: #ef4444;

    /* Priority Colors */
    --priority-low: #6b7280;
    --priority-medium: #f59e0b;
    --priority-high: #f97316;
    --priority-urgent: #ef4444;

    /* Borders */
    --border-color: #d1d5db;
    --border-radius: 8px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'Courier New', monospace;
}

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

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.5;
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Screen Management */
.screen {
    display: none;
    min-height: 100vh;
}

.screen.active {
    display: block;
}

/* Login Screen */
.login-container {
    max-width: 400px;
    margin: 10vh auto;
    padding: var(--spacing-xl);
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-header h1 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary);
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.login-form {
    margin-bottom: var(--spacing-lg);
}

.login-footer {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Main Header */
.main-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-left, .header-center, .header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.header-left h1 {
    font-size: 1.25rem;
    font-weight: 600;
}

/* Navigation Menu */
.nav-menu {
    position: absolute;
    top: 60px;
    right: var(--spacing-lg);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    z-index: 1000;
}

.nav-menu a {
    display: block;
    padding: var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: background 0.2s;
}

.nav-menu a:hover {
    background: var(--bg-secondary);
}

.nav-menu hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: var(--spacing-sm) 0;
}

/* Main Container */
.main-container {
    display: flex;
    min-height: calc(100vh - 60px);
}

/* Sidebar */
.sidebar {
    width: 250px;
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    overflow-y: auto;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: background 0.2s;
}

.nav-item:hover {
    background: var(--bg-secondary);
}

.nav-item.active {
    background: var(--primary);
    color: white;
}

.nav-icon {
    font-size: 1.2rem;
}

.nav-label {
    flex: 1;
}

.nav-count {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.nav-item.active .nav-count {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.sidebar-section {
    margin-top: var(--spacing-lg);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
}

/* Content Area */
.content-area {
    flex: 1;
    padding: var(--spacing-xl);
    overflow-y: auto;
}

/* Stats Container */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.stat-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-sm);
}

.stat-icon {
    font-size: 2rem;
}

.stat-info {
    flex: 1;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Items Header */
.items-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.items-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.items-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

/* Items List */
.items-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.item-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: box-shadow 0.2s, transform 0.2s;
}

.item-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-sm);
}

.item-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
}

.item-meta {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.item-preview {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: var(--spacing-sm);
}

.item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.item-tags {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
}

.item-date {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

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

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

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-icon {
    background: transparent;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: background 0.2s;
}

.btn-icon:hover {
    background: var(--bg-secondary);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.85rem;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn-icon-small {
    background: transparent;
    border: none;
    font-size: 1rem;
    cursor: pointer;
    padding: 0.25rem;
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.form-control, input[type="text"], input[type="email"], input[type="password"],
input[type="date"], input[type="color"], select, textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-family: var(--font-sans);
    transition: border-color 0.2s;
}

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

textarea {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-hint {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-sm {
    max-width: 400px;
}

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

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

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

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

.modal-body {
    padding: var(--spacing-lg);
}

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

/* Dropdown Menu */
.dropdown-menu {
    position: fixed;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    z-index: 1000;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: background 0.2s;
}

.dropdown-menu a:hover {
    background: var(--bg-secondary);
}

/* Loading Spinner */
.loading {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
}

.spinner {
    border: 3px solid var(--bg-tertiary);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Toast Messages */
.toast {
    position: fixed;
    top: 80px;
    right: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    z-index: 3000;
    animation: slideIn 0.3s ease-out;
}

.toast.success {
    background: var(--status-done);
    color: white;
}

.toast.error {
    background: var(--status-error);
    color: white;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Error Message */
.error-message {
    background: #fee2e2;
    color: #dc2626;
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-top: var(--spacing-md);
}

/* Placeholder */
.placeholder {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-secondary);
    font-style: italic;
}

/* Status Badges */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-pending {
    background: #fef3c7;
    color: #92400e;
}

.status-progress {
    background: #dbeafe;
    color: #1e40af;
}

.status-done {
    background: #d1fae5;
    color: #065f46;
}

/* Priority Badges */
.priority-low {
    color: var(--priority-low);
}

.priority-medium {
    color: var(--priority-medium);
}

.priority-high {
    color: var(--priority-high);
}

.priority-urgent {
    color: var(--priority-urgent);
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: -250px;
        top: 60px;
        height: calc(100vh - 60px);
        z-index: 99;
        transition: left 0.3s;
    }

    .sidebar.active {
        left: 0;
    }

    .content-area {
        padding: var(--spacing-md);
    }

    .stats-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .modal-content {
        width: 95%;
    }

    .items-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .items-actions {
        width: 100%;
    }

    .items-actions select {
        flex: 1;
    }
}

@media (max-width: 480px) {
    .stats-container {
        grid-template-columns: 1fr;
    }

    .stat-card {
        padding: var(--spacing-md);
    }

    .main-header {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .header-left h1 {
        font-size: 1rem;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.hidden {
    display: none !important;
}