@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;700;900&display=swap');

:root {
    --primary-color: #ff6b6b;
    --secondary-color: #f0e68c;
    --background-light: #fff8e1;
    --text-light: #333;
    --background-dark: #2c3e50;
    --text-dark: #ecf0f1;
    --card-bg-light: #ffffff;
    --card-bg-dark: #34495e;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --glow-color: rgba(255, 107, 107, 0.5);
}

body {
    font-family: 'Nunito', sans-serif;
    margin: 0;
    padding: 20px;
    background-color: var(--background-light);
    color: var(--text-light);
    transition: background-color 0.5s, color 0.5s;
    background-image: url("data:image/svg+xml,%3Csvg width='6' height='6' viewBox='0 0 6 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%239C92AC' fill-opacity='0.15' fill-rule='evenodd'%3E%3Cpath d='M5 0h1L0 6V5zM6 5v1H5z'/%3E%3C/g%3E%3C/svg%3E");
}

body.dark-mode {
    --background-light: var(--background-dark);
    --text-light: var(--text-dark);
    --card-bg-light: var(--card-bg-dark);
    --shadow-color: rgba(0, 0, 0, 0.4);
    --glow-color: rgba(255, 107, 107, 0.7);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--card-bg-light);
    padding: 40px;
    border-radius: 30px;
    box-shadow: 0 15px 35px var(--shadow-color);
    transition: background-color 0.5s;
    text-align: center;
    position: relative;
    overflow: hidden;
}

header {
    background-color: transparent;
    padding: 0;
    margin-bottom: 30px;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    gap: 20px;
}

nav a {
    text-decoration: none;
    color: var(--text-light);
    font-weight: 700;
    font-size: 1.1em;
    padding: 10px 20px;
    border-radius: 20px;
    transition: all 0.3s ease;
}

nav a:hover, nav a.active {
    background-color: var(--primary-color);
    color: white;
    box-shadow: 0 5px 15px var(--glow-color);
}


#theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--card-bg-light);
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 5px 15px var(--shadow-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#theme-toggle:hover {
    transform: scale(1.1) rotate(15deg);
    box-shadow: 0 8px 25px var(--glow-color);
}

.screen {
    animation: fadeIn 0.8s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

h1, h2, h3 {
    font-weight: 900;
    color: var(--primary-color);
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 10px;
}

#mbti-result {
    font-size: 4rem;
    margin: 20px 0;
    color: var(--primary-color);
    animation: bounceIn 1s ease;
}

@keyframes bounceIn {
    0%, 20%, 40%, 60%, 80%, 100% {
        animation-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
    }
    0% { opacity: 0; transform: scale(0.3); }
    20% { transform: scale(1.1); }
    40% { transform: scale(0.9); }
    60% { opacity: 1; transform: scale(1.03); }
    80% { transform: scale(0.97); }
    100% { opacity: 1; transform: scale(1); }
}


button, .answer-btn {
    background: linear-gradient(45deg, var(--primary-color), #ff8a8a);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.2em;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 4px 15px var(--shadow-color);
    outline: none;
}

button:hover, .answer-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 10px 20px var(--glow-color);
}

button:active, .answer-btn:active {
    transform: translateY(-2px) scale(1);
    box-shadow: 0 6px 12px var(--glow-color);
}

#retry-btn, #start-btn {
    margin-top: 20px;
}

#question-container {
    margin: 40px 0;
}

#question {
    font-size: 1.5em;
    margin-bottom: 30px;
}

.answer-btn {
    margin: 0 10px;
    background: var(--card-bg-light);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

#progress-bar {
    width: 100%;
    height: 10px;
    background-color: #eee;
    border-radius: 5px;
    margin-top: 30px;
    overflow: hidden;
}

#progress {
    width: 0%;
    height: 100%;
    background-color: var(--primary-color);
    transition: width 0.3s ease-in-out;
}

.mbti-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.mbti-card {
    background-color: var(--card-bg-light);
    padding: 20px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 16px var(--shadow-color);
    transition: transform 0.3s, box-shadow 0.3s;
    text-decoration: none;
    color: var(--text-light);
}

.mbti-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 24px var(--shadow-color);
}

.mbti-card h4 {
    margin: 0;
    font-size: 1.5em;
    color: var(--primary-color);
}

#result-screen a button {
    margin-top: 20px;
}

footer {
    text-align: center;
    margin-top: 40px;
    color: #aaa;
    font-size: 0.9em;
}

#contact-btn, #close-contact-btn {
    margin-top: 20px;
}

#contact-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 20px;
}

#contact-form input, #contact-form textarea {
    padding: 15px;
    border-radius: 15px;
    border: 1px solid #ddd;
    font-family: 'Nunito', sans-serif;
    font-size: 1em;
}

#contact-form button {
    align-self: center;
}