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

:root {
    --primary-color: #dc3545;
    --primary-dark: #c82333;
    --primary-light: #e4606d;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --background: #1a1a1a;
    --background-secondary: #2d2d2d;
    --surface: #252525;
    --surface-hover: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --border-color: #404040;
    --border-color-light: #333333;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.5);
    --red-accent: #dc3545;
    --red-dark: #c82333;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Modal Styles */
.modal {
    display: none; /* Hidden by default */
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex; /* Show when .show class is added */
}

.modal-content {
    background-color: var(--surface);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    width: 90%;
    max-width: 500px;
    min-height: 300px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideIn 0.3s ease-out;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.modal-content form {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.modal-large {
    max-width: 700px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    margin: 0;
}

.modal-content h2 {
    margin: 0 0 1.5rem 0;
}

.close-btn {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-secondary);
    line-height: 1;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

.close-btn:hover {
    color: var(--red-accent);
}

.modal-body {
    margin-bottom: 1.5rem;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

@keyframes slideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* App Container */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-header {
    background: var(--surface);
    box-shadow: var(--shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-content h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.header-content h1::before {
    content: "🔴 ";
    color: var(--red-accent);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.username-display {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.menu-button {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    color: var(--red-accent);
    border-radius: 4px;
    transition: all 0.2s;
}

.menu-button:hover {
    background-color: var(--surface-hover);
    color: var(--red-dark);
}

.menu-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    border-radius: 4px;
    min-width: 200px;
    margin-top: 0.5rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.menu-dropdown.show {
    display: block;
}

.menu-dropdown a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.2s;
}

.menu-dropdown a:hover {
    background-color: var(--surface-hover);
    color: var(--red-accent);
}

.app-main {
    flex: 1;
    padding: 2rem 0;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Logo Section */
.logo-section {
    text-align: center;
    margin-bottom: 2rem;
}

.logo-placeholder {
    margin-bottom: 1rem;
    display: flex;
    justify-content: center;
}

.description {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Form Styles */
.activation-form {
    background: var(--surface);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-primary);
}

.required {
    color: var(--red-accent);
}

input[type="text"],
input[type="email"],
select,
textarea {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
    background-color: var(--background-secondary);
    color: var(--text-primary);
}

input[type="text"]:focus,
input[type="email"]:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--red-accent);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.2);
    background-color: var(--surface);
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
textarea::placeholder {
    color: var(--text-muted);
}

textarea {
    resize: vertical;
    min-height: 100px;
    font-family: 'Courier New', monospace;
}

.radio-group {
    display: flex;
    gap: 2rem;
    margin-top: 0.5rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.radio-label input[type="radio"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--red-accent);
}

.checkbox-group {
    flex-direction: row;
    gap: 2rem;
    flex-wrap: wrap;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--red-accent);
}

.separator {
    height: 1px;
    background: var(--border-color);
    margin: 2rem 0;
    border: none;
}

.instructions {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
}

.btn-primary {
    background-color: var(--red-accent);
    color: white;
    border: 1px solid var(--red-accent);
}

.btn-primary:hover {
    background-color: var(--red-dark);
    border-color: var(--red-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(220, 53, 69, 0.3);
}

.btn-secondary {
    background-color: var(--background-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-icon {
    padding: 0.5rem;
    background: var(--background-secondary);
    color: var(--red-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
}

.btn-icon:hover {
    background: var(--surface-hover);
    color: var(--red-dark);
    border-color: var(--red-accent);
}

.form-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    margin-bottom: 0;
}

.activation-code-group {
    display: flex;
    gap: 0.5rem;
    align-items: flex-start;
}

.activation-code-group textarea {
    flex: 1;
}

/* Properties Display */
.properties-display {
    background: var(--background-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 1rem;
    min-height: 200px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    white-space: pre-wrap;
    word-wrap: break-word;
    color: var(--text-primary);
}

.placeholder-text {
    color: var(--text-muted);
    font-style: italic;
}

.error-message {
    color: var(--red-accent);
    margin-top: 1rem;
    padding: 0.75rem;
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid rgba(220, 53, 69, 0.3);
    border-radius: 4px;
    display: none;
}

.error-message.show {
    display: block;
}

.success-message {
    color: var(--success-color);
    margin-top: 1rem;
    padding: 0.75rem;
    background: rgba(40, 167, 69, 0.1);
    border: 1px solid rgba(40, 167, 69, 0.3);
    border-radius: 4px;
    display: none;
}

.success-message.show {
    display: block;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }

    .header-content h1 {
        font-size: 1.2rem;
    }

    .container {
        padding: 0 1rem;
    }

    .activation-form {
        padding: 1.5rem;
    }

    .radio-group {
        flex-direction: column;
        gap: 1rem;
    }

    .checkbox-group {
        flex-direction: column;
        gap: 1rem;
    }

    .modal-content {
        padding: 1.5rem;
        margin: 1rem;
    }
}