:root {
    --primary-color: #007bff;
    --primary-dark: #0056b3;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --dark-bg: #1a1a1a;
    --dark-card: #2d2d2d;
    --dark-text: #ffffff;
    --light-bg: #f8f9fa;
    --light-card: #ffffff;
    --light-text: #333333;
    --border-color: #dee2e6;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

[data-theme="dark"] {
    --bg-color: var(--dark-bg);
    --text-color: var(--dark-text);
    --card-bg: var(--dark-card);
    --border-color: #444;
}

[data-theme="light"] {
    --bg-color: var(--light-bg);
    --text-color: var(--light-text);
    --card-bg: var(--light-card);
    --border-color: #dee2e6;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
header {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 3rem 0;
    text-align: center;
    margin-bottom: 2rem;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    font-weight: 300;
}

header h1 a {
    color: white;
    text-decoration: none;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Two Column Form Layout */
.form-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .form-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

.form-column {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.form-column h3 {
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--primary-color);
    font-size: 1.3rem;
    font-weight: 600;
}

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
    font-size: 0.95rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    background: var(--bg-color);
    color: var(--text-color);
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.85rem;
    color: #666;
}

[data-theme="dark"] .form-group small {
    color: #999;
}

/* Full-width sections */
.full-width-section {
    grid-column: 1 / -1;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

/* Button Styles */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 123, 255, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--card-bg);
    color: var(--primary-color);
    padding: 1rem 2rem;
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-submit {
    margin-top: 2rem;
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    z-index: 1000;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    transform: scale(1.1);
}

/* Status Styles */
.status-container {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.status-card {
    margin-bottom: 2rem;
}

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

.fax-id {
    font-weight: 600;
    color: var(--primary-color);
}

.status-badge {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-pending { 
    background: #fff3cd; 
    color: #856404; 
}
[data-theme="dark"] .status-pending { 
    background: #665c34; 
    color: #ffd; 
}

.status-confirmed { 
    background: #cce5ff; 
    color: #004085; 
}
[data-theme="dark"] .status-confirmed { 
    background: #2c3e50; 
    color: #b3d7ff; 
}

.status-processing { 
    background: #fff3cd; 
    color: #856404; 
}
[data-theme="dark"] .status-processing { 
    background: #665c34; 
    color: #ffd; 
}

.status-sent { 
    background: #d4edda; 
    color: #155724; 
}
[data-theme="dark"] .status-sent { 
    background: #2d4a2d; 
    color: #b8f2c8; 
}

.status-failed { 
    background: #f8d7da; 
    color: #721c24; 
}
[data-theme="dark"] .status-failed { 
    background: #5a2a2a; 
    color: #ffb8c1; 
}

.status-delivered { 
    background: #d4edda; 
    color: #155724; 
}
[data-theme="dark"] .status-delivered { 
    background: #2d4a2d; 
    color: #b8f2c8; 
}

.status-details p {
    margin-bottom: 0.5rem;
}

.status-updates {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: 5px;
    border-left: 4px solid var(--primary-color);
}

/* Error Messages */
.error-message {
    background: #f8d7da;
    color: #721c24;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    border-left: 4px solid #dc3545;
}

[data-theme="dark"] .error-message {
    background: #5a2a2a;
    color: #ffb8c1;
}

.error-message ul {
    margin-left: 1.5rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
    border-top: 1px solid var(--border-color);
    color: #666;
}

[data-theme="dark"] footer {
    color: #999;
}

/* Animation for status updates */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.status-update {
    animation: fadeIn 0.5s ease;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.status-update:last-child {
    border-bottom: none;
}

/* Fix file upload styling */
.file-upload-wrapper {
    position: relative;
    cursor: pointer;
}

.file-upload-wrapper input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
    z-index: 2;
}

.file-upload-display {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    background: var(--bg-color);
    position: relative;
    z-index: 1;
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.file-upload-display:hover {
    border-color: var(--primary-color);
    background: rgba(0, 123, 255, 0.05);
}

.file-upload-display.has-file {
    border-color: var(--success-color);
    background: rgba(40, 167, 69, 0.05);
}

.file-name {
    margin-top: 0.5rem;
    font-weight: 600;
    color: var(--primary-color);
}