/* General Body and Background Styles */
body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(300deg, #f5f3ff, #eef2ff, #fde2e4);
    background-size: 180% 180%;
    animation: dreamyGradientAnimation 18s ease infinite;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    padding: 1rem;
    box-sizing: border-box;
}

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

/* Main container for the form cards */
.main-container {
    width: 100%;
    max-width: 28rem; /* 448px */
}

/* Base card styling */
.card {
    background-color: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    border: 1px solid #e5e7eb;
    border-radius: 1rem; /* 16px */
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    padding: 2rem; /* 32px */
    text-align: center;
}

/* Form container animation */
.form-container {
    display: none;
    animation: fadeIn 0.5s ease-out forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Typography */
.logo {
    font-size: 1.875rem; /* 30px */
    font-weight: 700;
    color: #1e293b;
    text-decoration: none;
}
h1, h2 {
    font-weight: 700;
    color: #1e293b;
}
h1 {
    font-size: 1.5rem; /* 24px */
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}
h2 {
    font-size: 1.5rem; /* 24px */
    margin-bottom: 0.25rem;
}
.subtitle {
    color: #64748b;
    margin-bottom: 2rem;
}

/* Role Selection Buttons */
.role-button-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.role-button {
    width: 100%;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: rgba(255, 255, 255, 0.8);
    padding: 1.5rem;
    border-radius: 1rem; /* 16px */
    border-width: 2px;
    border-style: solid;
    transition: all 0.2s ease-in-out;
    cursor: pointer;
}
.role-button:hover {
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
    transform: scale(1.05);
}
.role-button .icon-container {
    padding: 0.75rem; /* 12px */
    border-radius: 0.5rem; /* 8px */
}
.role-button .icon {
    width: 1.5rem; /* 24px */
    height: 1.5rem;
}
.role-button h3 {
    font-size: 1.125rem; /* 18px */
    font-weight: 600;
    color: #1e293b;
}
.role-button p {
    font-size: 0.875rem; /* 14px */
    color: #64748b;
}

/* Button Color Variants */
.student-button { border-color: #ddd6fe; }
.student-button:hover { border-color: #a78bfa; }
.student-button .icon-container { background-color: #ede9fe; }
.student-button .icon { color: #8b5cf6; }

.club-head-button { border-color: #bbf7d0; }
.club-head-button:hover { border-color: #4ade80; }
.club-head-button .icon-container { background-color: #dcfce7; }
.club-head-button .icon { color: #22c55e; }

.admin-button { border-color: #bae6fd; }
.admin-button:hover { border-color: #38bdf8; }
.admin-button .icon-container { background-color: #e0f2fe; }
.admin-button .icon { color: #0ea5e9; }

/* Form Styles */
.back-button {
    display: inline-block;
    color: #64748b;
    margin-bottom: 1rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    font-size: 1rem;
}
.back-button:hover {
    color: #1e293b;
}
form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    box-sizing: border-box; /* Ensures padding doesn't affect width */
    transition: box-shadow 0.2s;
}
.form-input:focus {
    outline: none;
}
.form-input.student-focus:focus { box-shadow: 0 0 0 2px #a78bfa; }
.form-input.club-head-focus:focus { box-shadow: 0 0 0 2px #4ade80; }
.form-input.admin-focus:focus { box-shadow: 0 0 0 2px #38bdf8; }

.submit-button {
    width: 100%;
    color: white;
    font-weight: 600;
    padding: 0.8rem 0;
    border-radius: 0.5rem;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
    transition: background-color 0.2s;
}
.student-submit { background-color: #7c3aed; }
.student-submit:hover { background-color: #6d28d9; }

.club-head-submit { background-color: #16a34a; }
.club-head-submit:hover { background-color: #15803d; }

.admin-submit { background-color: #0284c7; }
.admin-submit:hover { background-color: #0369a1; }

/* Switch form link */
.switch-form-text {
    text-align: center;
    font-size: 0.875rem;
    color: #64748b;
    margin-top: 1.5rem;
}
.switch-form-button {
    font-weight: 600;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}
.switch-form-button:hover { text-decoration: underline; }
.switch-form-button.student-link { color: #7c3aed; }
.switch-form-button.club-head-link { color: #16a34a; }
.switch-form-button.admin-link { color: #0284c7; }