:root {
    --background: #ffffff;
    --foreground: #1a1a1a;
    --card: #ffffff;
    --card-foreground: #1a1a1a;
    --primary: #101010;
    --primary-foreground: #fafafa;
    --secondary: #f3f3f3;
    --secondary-foreground: #101010;
    --muted: #f3f3f3;
    --muted-foreground: #767676;
    --accent: #f3f3f3;
    --accent-foreground: #101010;
    --destructive: #d9534f;
    --destructive-foreground: #ffffff;
    --border: #d1d1d1;
    --input: #d1d1d1;
    --ring: #101010;
}

.center-container {
    display: flex;
    justify-content: center;
    margin-top: 2.5rem;
}

.popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 50;
    opacity: 0;
    transform: translateY(-20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

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

.popup-content {
    background-color: var(--card);
    border-radius: 0.5rem;
    padding: 1.5rem;
    width: 100%;
    max-width: 28rem;
    position: relative;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
}

.close-button {
    position: absolute;
    top: 0.95rem;
    right: 0.5rem;
    background: none;
    border: none;
    color: var(--destructive);
    cursor: pointer;
    font-size: 1.5rem;
    line-height: 1;
}

.popup-title {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary);
    margin-bottom: 1rem;
}

.feedback-textarea {
    width: 96%;
    height: 8rem;
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    outline: none;
    resize: none;
    transition: border-color 0.3s;
}

.feedback-textarea:focus {
    border-color: var(--ring);
}

.button-container {
    display: flex;
    justify-content: flex-end;
    margin-top: 1rem;
}

.submit-button {
    background-color: var(--primary);
    color: var(--primary-foreground);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    transition: background-color 0.3s;
}

.submit-button:hover {
    background-color: rgba(16, 16, 16, 0.8);
}

.hidden {
    display: none;
}
