/* Prevent dropdown flash during page loads */
.dropdown-menu {
    display: none !important;
}

.dropdown-menu.show {
    display: block !important;
}

/* Add a fade transition for smoother showing/hiding */
.dropdown-menu {
    transition: opacity 0.15s ease-in-out;
    opacity: 0;
}

.dropdown-menu.show {
    opacity: 1;
}

[x-cloak] {
    display: none !important;
}

/* Enhanced Registration Form Styles */
.registration-form {
    background: #ffffff;
}

.form-input-focus {
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-input-focus:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.password-strength-bar {
    transition: all 0.3s ease;
}

.animate-pulse-slow {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Custom gradient backgrounds */
.bg-gradient-primary {
    background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
}

.bg-gradient-success {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
}

/* Enhanced button hover effects */
.btn-primary-enhanced {
    background: linear-gradient(135deg, #2563EB 0%, #1D4ED8 100%);
    transition: background 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
    position: relative;
    overflow: hidden;
    border: 2px solid #1E40AF;
    font-weight: 600;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

@media (hover: hover) and (pointer: fine) {
    .btn-primary-enhanced:hover:not(:disabled) {
        transform: translateY(-1px);
        box-shadow: 0 8px 25px rgba(37, 99, 235, 0.35);
        background: linear-gradient(135deg, #1D4ED8 0%, #1E40AF 100%);
    }
}

.btn-primary-enhanced:active {
    transform: none;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-primary-enhanced:disabled {
    background: linear-gradient(135deg, #9CA3AF 0%, #6B7280 100%);
    transform: none;
    box-shadow: none;
    cursor: not-allowed;
}

/* Loading spinner animation */
.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Form validation styles */
.input-error {
    border-color: #EF4444 !important;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1) !important;
}

.input-success {
    border-color: #10B981 !important;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1) !important;
}

/* Username availability indicators */
.username-checking {
    animation: pulse 1.5s ease-in-out infinite;
}

.username-available {
    color: #10B981;
}

.username-taken {
    color: #EF4444;
}

/* SweetAlert2 custom styles */
.swal2-popup {
    border-radius: 16px !important;
    font-family: inherit !important;
}

.swal2-title {
    color: #1F2937 !important;
    font-weight: 600 !important;
}

.swal2-html-container {
    color: #4B5563 !important;
}

/* Responsive improvements */
@media (max-width: 640px) {
    .registration-form {
        margin: 0 1rem;
        padding: 1.5rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
}

/* Public site — school logo watermark (absolute, scrolls with page for smooth scrolling) */
.public-site-watermark {
    position: relative;
    isolation: isolate;
    --watermark-fade: linear-gradient(
        to right,
        rgba(0, 0, 0, 1) 0%,
        rgba(0, 0, 0, 0.75) 18%,
        rgba(0, 0, 0, 0.35) 42%,
        transparent 68%
    );
}

.public-site-watermark > nav,
.public-site-watermark > main,
.public-site-watermark > section,
.public-site-watermark > footer {
    position: relative;
    z-index: 1;
}

.public-site-watermark::before {
    content: '';
    position: absolute;
    top: 6rem;
    left: max(-6%, -1.5rem);
    width: min(58vw, 640px);
    height: min(58vw, 640px);
    background-image: var(--school-logo-url);
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;
    opacity: 0.13;
    pointer-events: none;
    z-index: 0;
    contain: strict;
    -webkit-mask-image: var(--watermark-fade);
    mask-image: var(--watermark-fade);
}

@media (max-width: 768px) {
    .public-site-watermark::before {
        width: min(72vw, 360px);
        height: min(72vw, 360px);
        left: -12%;
        top: 4rem;
        opacity: 0.09;
    }
}

/* Below-fold sections skip layout/paint until near viewport */
.public-section-lazy {
    content-visibility: auto;
    contain-intrinsic-size: auto 520px;
}

/* Hero carousel — single image layer, GPU-friendly fade */
.home-hero {
    contain: strict;
}

.home-hero-media {
    contain: strict;
    overflow: hidden;
    background-color: #111827;
}

.home-hero-img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: opacity 0.45s ease-in-out;
    will-change: opacity;
}

.home-hero-img.is-fading {
    opacity: 0;
}

@media (prefers-reduced-motion: reduce) {
    .home-hero-img {
        transition: none;
    }
}

/* Replace expensive CSS blur filters with lightweight gradients */
.home-glow-bg {
    background:
        radial-gradient(ellipse 70% 55% at 100% 0%, rgba(59, 130, 246, 0.18), transparent 55%),
        radial-gradient(ellipse 60% 50% at 0% 100%, rgba(245, 158, 11, 0.1), transparent 50%);
}

/* Card hover lifts only on devices with fine pointer (avoids touch scroll jank) */
@media (hover: hover) and (pointer: fine) {
    .card-hover-lift {
        transition: box-shadow 0.25s ease, transform 0.25s ease;
    }

    .card-hover-lift:hover {
        transform: translateY(-0.25rem);
        box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    }
}

/* --- Public site scroll performance (all frontend-layout pages) --- */
.public-page-main {
    contain: layout style;
    isolation: isolate;
}

.public-scroll-page {
    contain: layout style;
}

/* Watermark + mask repaints hurt long form pages */
.public-site-watermark:has(.public-scroll-page)::before {
    display: none;
}

/* Sticky sidebars only on desktop; contain layout to limit repaints */
.public-sticky-aside {
    contain: layout style;
}

@media (max-width: 1023px) {
    .public-sticky-aside {
        position: static !important;
        top: auto !important;
    }
}

/* Nav: transition colors only (not transition-all) */
.public-site-watermark nav a,
.public-site-watermark nav button {
    transition: color 0.15s ease, background-color 0.15s ease !important;
}

@media (hover: none) {
    .public-site-watermark nav a:hover,
    .public-site-watermark nav button:hover {
        transform: none !important;
    }
}

/* Backdrop-filter is expensive during scroll — use solid fills instead */
.public-site-watermark [class*="backdrop-blur"] {
    -webkit-backdrop-filter: none !important;
    backdrop-filter: none !important;
}

/* Form fields: avoid transition-all repaints while scrolling */
.public-site-watermark input,
.public-site-watermark textarea,
.public-site-watermark select {
    transition: border-color 0.15s ease, box-shadow 0.15s ease !important;
}

@media (hover: none) {
    .public-site-watermark [class*="hover:-translate"],
    .public-site-watermark [class*="hover:scale"],
    .public-site-watermark [class*="group-hover:scale"] {
        transform: none !important;
    }

    .public-site-watermark [class*="transition-all"] {
        transition: none !important;
    }
}

/* iOS-specific mobile menu fixes */
@supports (-webkit-touch-callout: none) {
    /* iOS Safari specific styles */
    .mobile-menu-fix {
        -webkit-overflow-scrolling: touch;
        -webkit-transform: translateZ(0);
    }
    
    /* Ensure proper touch handling on iOS */
    button, a {
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
    
    /* Fix for iOS Safari viewport issues */
    @media screen and (max-width: 640px) {
        body {
            -webkit-text-size-adjust: 100%;
            -ms-text-size-adjust: 100%;
        }
    }
}