/* ===================================
   REGISTRATION MODAL - COMPACT & RESPONSIVE REDESIGN
   =================================== */

/* Block scrolling when modal is open */
body.modal-open {
    overflow: hidden;
    padding-right: 8px; /* Prevent layout shift */
}

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.6); /* Slightly more opaque dark overlay */
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    transition: backdrop-filter 0.3s ease;
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg) var(--spacing-xl); /* Compact padding */
    max-width: 600px;
    width: 90%;
    max-height: 90vh; /* Allow max height but scrollable */
    overflow-y: auto; /* Scrollable content if needed */
    box-shadow: var(--shadow-lg), 0 0 0 1px rgba(255,255,255,0.05); /* Enhanced shadow */
    transform: scale(0.95) translateY(10px);
    transition: all var(--transition-base);
    z-index: 2;
    display: flex;
    flex-direction: column;
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

/* Close Button */
.modal-close {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 32px;
    height: 32px;
    border-radius: 50%; /* Circular */
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    z-index: 10;
}

.modal-close:hover {
    background: rgba(255,255,255,0.08);
    color: var(--text-primary);
    transform: rotate(90deg);
}

/* Header Section */
.modal-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    flex-shrink: 0;
}

.modal-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 0.75rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(168, 85, 247, 0.1) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.modal-icon i {
    font-size: 1.25rem;
}

.modal-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    letter-spacing: -0.02em;
}

.modal-subtitle {
    color: var(--text-secondary);
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Grid Form Layout */
.register-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem; /* Compact gap */
    width: 100%;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem; /* Tighter label-input gap */
}

/* Span full width for specific items */
.form-group.full-width {
    grid-column: span 2;
}

.form-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem; /* Smaller labels */
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-muted);
}

.form-group label i {
    color: var(--primary-light);
    font-size: 0.75rem;
}

.required {
    color: var(--accent-color);
    margin-left: 2px;
}

/* Inputs & Selects */
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(255, 255, 255, 0.03); /* Lighter bg */
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

/* Select specific styling */
.form-group select {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form-group textarea {
    resize: none;
    min-height: 80px;
    line-height: 1.4;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: rgba(255, 255, 255, 0.05); /* Slight highlight */
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

/* Form Actions */
.form-actions {
    margin-top: 0.5rem;
    grid-column: span 2;
}

.btn-large {
    padding: 0.85rem 1.5rem; /* Slightly smaller padding */
    font-size: 0.95rem;
    width: 100%;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    font-weight: 600;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-large:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}

/* Success Message Overlay */
.success-message {
    position: absolute;
    inset: 0;
    background: var(--bg-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 20;
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
}

.success-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 1.5rem;
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: successPop 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.success-icon i {
    font-size: 2rem;
}

.success-message h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.success-message p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 2rem;
    max-width: 300px;
}

@keyframes successPop {
    0% { transform: scale(0); opacity: 0; }
    80% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}

/* ===================================
   RESPONSIVE MOBILE STYLES
   =================================== */

@media (max-width: 640px) {
    .modal-content {
        padding: 1.5rem; /* Tighter horizontal padding */
        width: 95%;
        max-height: 95vh;
        border-radius: var(--radius-lg);
    }
    
    .modal-header {
        margin-bottom: 1.25rem;
    }
    
    .modal-title {
        font-size: 1.25rem;
    }
    
    .register-form {
        grid-template-columns: 1fr; /* Single column stack */
        gap: 0.85rem;
    }
    
    .form-group.full-width {
        grid-column: span 1;
    }
    
    .form-group label {
        font-size: 0.7rem;
    }
    
    .form-group input, 
    .form-group select, 
    .form-group textarea {
        padding: 0.7rem 0.85rem; /* Finger-friendly touch targets */
        font-size: 16px; /* Prevent iOS zoom */
    }
    
    .form-actions {
        margin-top: 0.5rem;
        grid-column: span 1;
    }
    
    /* Scrollbar hidden for cleaner look on mobile */
    .modal-content::-webkit-scrollbar {
        display: none;
    }
    .modal-content {
        -ms-overflow-style: none;
        scrollbar-width: none;
    }
}

/* Custom Scrollbar for Desktop */
@media (min-width: 641px) {
    .modal-content::-webkit-scrollbar {
        width: 6px;
    }
    .modal-content::-webkit-scrollbar-track {
        background: transparent;
    }
    .modal-content::-webkit-scrollbar-thumb {
        background: rgba(255,255,255,0.1);
        border-radius: 10px;
    }
    .modal-content::-webkit-scrollbar-thumb:hover {
        background: rgba(255,255,255,0.2);
    }
}