:root {
    --primary-color: #6a1b9a;
    --secondary-color: #9c4dcc;
    --accent-color: #ff4081;
    --text-color: #333;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Montserrat', sans-serif;
}

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

body {
    font-family: var(--font-body);
    /* Fondo con gradiente elegante que impacta */
    background: linear-gradient(135deg, #2e003e 0%, #6a1b9a 50%, #d81b60 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-color);
    padding: 20px;
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite; /* Animación suave del fondo */
}

@keyframes gradientBG {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

.container {
    width: 100%;
    max-width: 600px;
    position: relative;
    z-index: 1;
}

.header {
    text-align: center;
    margin-bottom: 30px;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.header h1 {
    font-family: var(--font-heading);
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.header p {
    font-size: 1.2rem;
    font-weight: 300;
}

.form-wrapper {
    background: rgba(255, 255, 255, 0.95);
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.2);
    backdrop-filter: blur(5px);
}

h2 {
    font-family: var(--font-heading);
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 30px;
    font-size: 2rem;
    position: relative;
}

h2::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent-color);
    margin: 10px auto 0;
    border-radius: 2px;
}

.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #555;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fafafa;
}

input:focus,
textarea:focus {
    border-color: var(--secondary-color);
    background: #fff;
    outline: none;
    box-shadow: 0 0 0 3px rgba(156, 77, 204, 0.1);
}

/* Custom Checkboxes */
.disciplines-label {
    margin-bottom: 15px;
}

.disciplines-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 15px;
}

.checkbox-container {
    display: block;
    position: relative;
    padding-left: 35px;
    cursor: pointer;
    font-size: 0.95rem;
    user-select: none;
    text-transform: capitalize;
    font-weight: 400;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: #eee;
    border-radius: 4px;
    transition: all 0.2s;
}

.checkbox-container:hover input ~ .checkmark {
    background-color: #ccc;
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--accent-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 7px;
    top: 3px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    font-family: var(--font-body);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(106, 27, 154, 0.4);
}

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

footer {
    text-align: center;
    margin-top: 30px;
    color: rgba(255,255,255,0.8);
    font-size: 0.8rem;
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translate3d(0, -30px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translate3d(0, 30px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

.animate-fade-in-down {
    animation: fadeInDown 1s ease-out;
}

.animate-fade-in-up {
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

.animate-fade-in {
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

/* Responsive */
@media (max-width: 600px) {
    .header h1 {
        font-size: 2.5rem;
    }
    
    .form-wrapper {
        padding: 25px;
    }
    
    .disciplines-grid {
        grid-template-columns: 1fr 1fr;
    }
}