/* style.css - Responsive styles for Worker Hours Tracker */

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

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --background: #f8fafc;
    --card-background: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
}

.screen {
    display: none;
}

.screen.active {
    display: block;
}

/* Login Screen */
#loginScreen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.logo {
    text-align: center;
    margin-bottom: 30px;
}

.logo h1 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 10px;
}

.logo p {
    color: var(--text-secondary);
}

/* Container */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

/* Cards */
.form-card {
    background: var(--card-background);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 20px;
}

.form-card h3 {
    margin-bottom: 20px;
    color: var(--primary-color);
}

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s;
}

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

input[readonly] {
    background-color: #f1f5f9;
}

textarea {
    resize: vertical;
}

.help-text {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 6px;
}

/* Buttons */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}

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

.btn-primary:hover {
    background: #1d4ed8;
}

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

.btn-secondary:hover {
    background: #475569;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

.form-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

/* Header */
.header {
    background: var(--card-background);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 20px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h2 {
    color: var(--primary-color);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.sync-status {
    font-size: 20px;
    color: var(--success-color);
}

.sync-status.offline {
    color: var(--danger-color);
}

.sync-status.syncing {
    color: var(--warning-color);
}

/* Navigation Tabs */
.nav-tabs {
    background: var(--card-background);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    overflow-x: auto;
    position: sticky;
    top: 65px;
    z-index: 99;
}

.tab-btn {
    flex: 1;
    padding: 16px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    color: var(--text-secondary);
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    padding-top: 20px;
}

.tab-content.active {
    display: block;
}

/* Signature Pad */
.signature-pad {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    background: white;
}

.signature-pad canvas {
    display: block;
    border: 1px dashed var(--border-color);
    cursor: crosshair;
    touch-action: none;
}

/* Summary Card */
.summary-card {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

.summary-card h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
}

.summary-item:last-child {
    border-bottom: none;
}

/* Manage Section */
.manage-section {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
}

.manage-section:last-child {
    border-bottom: none;
}

.manage-section h4 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-primary);
    color: white;
    padding: 16px 24px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s;
    max-width: 90%;
}

.toast.show {
    opacity: 1;
}

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

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

/* Error Message */
.error-message {
    background: #fee2e2;
    color: #991b1b;
    padding: 12px;
    border-radius: 8px;
    margin-top: 15px;
}

/* Table Styles */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    background: white;
    border-radius: 8px;
    overflow: hidden;
}

th {
    background: var(--primary-color);
    color: white;
    padding: 12px;
    text-align: left;
}

td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

tr:last-child td {
    border-bottom: none;
}

/* Responsive Design */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .header-content {
        flex-direction: column;
        gap: 10px;
    }
    
    .nav-tabs {
        top: 95px;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .signature-pad canvas {
        width: 100%;
        height: 120px;
    }
}

/* Print Styles */
@media print {
    .header,
    .nav-tabs,
    .btn,
    .form-actions {
        display: none !important;
    }
    
    .form-card {
        box-shadow: none;
        border: 1px solid #000;
    }
}

/* Loading Spinner */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}