/* DNK Business Tools - Styles */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

/* Navbar */
.navbar {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand a {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
}

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

.navbar-user span {
    color: #ecf0f1;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s, opacity 0.2s;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background-color: #3498db;
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background-color: #2980b9;
}

.btn-secondary {
    background-color: #95a5a6;
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background-color: #7f8c8d;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn.loading {
    position: relative;
    color: transparent;
}

/* Login Page */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 1rem;
}

.login-form {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    font-size: 1.75rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: #7f8c8d;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #2c3e50;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: #3498db;
}

.login-form .btn {
    width: 100%;
    margin-top: 1rem;
}

.error-message {
    background-color: #fee2e2;
    color: #dc2626;
    padding: 0.75rem;
    border-radius: 4px;
    margin-top: 1rem;
    text-align: center;
}

/* Dashboard */
.dashboard-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.dashboard-header {
    text-align: center;
    margin-bottom: 2rem;
}

.dashboard-header h1 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.dashboard-header p {
    color: #7f8c8d;
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    text-decoration: none;
    color: inherit;
    transition: transform 0.2s, box-shadow 0.2s;
    display: flex;
    flex-direction: column;
    position: relative;
}

.tool-card:hover:not(.disabled) {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.tool-card.disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.tool-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.tool-info h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.tool-info p {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.tool-status {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
}

.tool-status.active {
    background-color: #d4edda;
    color: #155724;
}

.tool-status.coming-soon {
    background-color: #fff3cd;
    color: #856404;
}

/* Tool Page Layout */
.tool-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.tool-header {
    margin-bottom: 2rem;
}

.tool-header h1 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.tool-header p {
    color: #7f8c8d;
}

/* File Upload Zone */
.upload-zone {
    border: 2px dashed #bdc3c7;
    border-radius: 8px;
    padding: 3rem 2rem;
    text-align: center;
    background: #fafafa;
    transition: border-color 0.2s, background-color 0.2s;
    cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: #3498db;
    background-color: #ebf5fb;
}

.upload-zone-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.upload-zone h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.upload-zone p {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.file-input {
    display: none;
}

/* File List */
.file-list {
    margin-top: 1rem;
}

.file-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 1rem;
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    margin-bottom: 0.5rem;
}

.file-item-name {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.file-remove {
    color: #e74c3c;
    cursor: pointer;
    padding: 0.25rem;
}

.file-remove:hover {
    color: #c0392b;
}

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: 2rem;
    padding: 1rem;
    background: #ecf0f1;
    border-radius: 4px;
    margin: 1rem 0;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.stat-label {
    color: #7f8c8d;
}

.stat-value {
    font-weight: bold;
    color: #2c3e50;
}

/* Heatmap Container */
.heatmap-section {
    margin-top: 2rem;
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    width: 100%;
    min-width: 100%;
}

#heatmap {
    width: 100%;
    min-height: 900px;
}

/* Toast Notifications */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: 4px;
    color: white;
    opacity: 0;
    transform: translateY(1rem);
    transition: opacity 0.3s, transform 0.3s;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast-success {
    background-color: #27ae60;
}

.toast-error {
    background-color: #e74c3c;
}

.toast-info {
    background-color: #3498db;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-bar {
        flex-direction: column;
        gap: 0.5rem;
    }
}