:root {
    --bg-color: #f4f7f6;
    --card-bg: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --border-color: #d1d8e0;
    --accent-color: #2980b9;
    --accent-hover: #3498db;
    --danger-color: #c0392b;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --input-focus: #3498db;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.05), 0 1px 3px rgba(0, 0, 0, 0.1);
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
}

.app-window {
    width: 600px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    position: relative;
}

.app-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.app-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    letter-spacing: -0.5px;
}

.app-content {
    padding: 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    font-size: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: #fafafa;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.15);
}

.button-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.btn {
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 500;
    text-align: center;
    border: 1px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

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

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

.btn-secondary {
    background-color: #f8f9fa;
    border-color: var(--border-color);
    color: var(--text-primary);
    width: 100%;
}

.btn-secondary:hover {
    background-color: #edf2f7;
    border-color: #cbd5e0;
}

.btn-danger {
    background-color: transparent;
    color: var(--text-secondary);
    font-size: 0.85rem;
    padding: 8px 16px;
}

.btn-danger:hover {
    color: var(--danger-color);
    background-color: rgba(192, 57, 43, 0.05);
}

.app-footer {
    padding: 16px 24px;
    background: #fdfdfd;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 60px;
}

.status-message {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-message.success {
    color: var(--success-color);
}

.status-message.error {
    color: var(--danger-color);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--border-color);
}

.status-message.success .status-indicator {
    background-color: var(--success-color);
}

.status-message.ready .status-indicator {
    background-color: var(--accent-color);
}

.icon-placeholder {
    margin-right: 8px;
    display: inline-flex;
}