/**
 * Comprehensive Audit Fixes
 * Addresses accessibility, responsiveness, and UX issues from portfolio audit
 */

/* ===================================
   SKIP TO MAIN CONTENT LINK
   =================================== */

.skip-to-main {
    position: absolute;
    left: -9999px;
    z-index: 9999;
    padding: 1em 1.5em;
    background-color: var(--primary-color);
    color: var(--bg-primary);
    text-decoration: none;
    font-weight: 600;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 234, 255, 0.4);
    transition: all 0.3s ease;
}

.skip-to-main:focus {
    left: 50%;
    top: 10px;
    transform: translateX(-50%);
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

/* ===================================
   HAMBURGER MENU STATE STYLING
   =================================== */

/* Add visible open/close state for hamburger */
.nav-toggle {
    position: relative;
    background: transparent;
    border: 2px solid transparent;
    border-radius: 4px;
    padding: 0.5rem;
    transition: all 0.3s ease;
    display: none; /* Hide on desktop by default */
}

/* Show only on mobile */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
}

.nav-toggle:hover,
.nav-toggle:focus-visible {
    border-color: rgba(0, 234, 255, 0.3);
    background: rgba(0, 234, 255, 0.05);
}

.nav-toggle.active {
    border-color: rgba(0, 234, 255, 0.5);
    background: rgba(0, 234, 255, 0.1);
}

.nav-toggle.active .bar {
    background: var(--secondary-color);
    box-shadow: 0 0 8px rgba(94, 255, 161, 0.6);
}

/* ===================================
   BUTTON HOVER IMPROVEMENTS
   =================================== */

/* Add scale transform to all buttons for better feedback */
.btn,
.attack-btn,
.footer-action-btn,
.verify-btn,
.cta-buttons .btn {
    transition: all 0.3s ease;
}

.btn:hover,
.attack-btn:hover,
.footer-action-btn:hover,
.verify-btn:hover,
.cta-buttons .btn:hover {
    transform: scale(1.05) translateY(-2px);
}

.btn:active,
.attack-btn:active,
.footer-action-btn:active,
.verify-btn:active {
    transform: scale(0.98) translateY(0);
}

/* ===================================
   ACTIVE NAV LINK UNDERLINE
   =================================== */

/* Ensure active link underline is clearly visible */
.nav-link.active {
    position: relative;
}

.nav-link.active::before {
    transform: scaleX(1) !important;
    height: 3px !important;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    box-shadow: 0 0 10px rgba(0, 234, 255, 0.6);
}

/* ===================================
   HERO TITLE RESPONSIVE WRAPPING
   =================================== */

/* Fix hero title wrapping on tablets */
@media (min-width: 769px) and (max-width: 1024px) {
    .hero-title {
        font-size: clamp(2.5rem, 5vw, 3rem);
        white-space: normal;
        word-break: normal;
        overflow-wrap: break-word;
    }
}

/* Ensure spans in hero title wrap naturally */
.hero-title span {
    display: inline;
    white-space: normal;
}

/* ===================================
   FORCE SINGLE COLUMN GRIDS ON MOBILE
   =================================== */

/* Projects grid - force single column ≤768px */
@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr !important;
        gap: 2rem;
    }
}

/* Skills grid - force single column ≤600px */
@media (max-width: 600px) {
    .skills-grid,
    .skills-container {
        grid-template-columns: 1fr !important;
        gap: 1.5rem;
    }
    
    .skill-card {
        margin: 0 auto;
        max-width: 100%;
    }
}

/* ===================================
   FOOTER SOCIAL ICONS - TOUCH TARGETS
   =================================== */

/* Ensure footer social icons are 44x44px minimum */
.footer__social a {
    min-width: 44px;
    min-height: 44px;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.footer__social a:hover {
    transform: scale(1.15) translateY(-3px);
}

@media (max-width: 768px) {
    .footer__social {
        gap: 1rem;
        padding: 0.5rem 0;
    }
    
    .footer__social a {
        width: 48px;
        height: 48px;
        min-width: 48px;
        min-height: 48px;
    }
}

/* ===================================
   PROJECT CARD IMAGE ASPECT RATIO
   =================================== */

/* Enforce consistent 16:9 aspect ratio */
.project-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    height: auto;
    overflow: hidden;
    background: rgba(16, 22, 38, 0.8);
}

.project-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* Projects notice: subtle, dark, cyan-accent */
.projects-info {
    margin: 1rem 0 1.5rem;
    padding: 0.85rem 1rem;
    color: #e6f8ff;
    background: rgba(10, 14, 22, 0.6);
    border: 1px solid rgba(0, 234, 255, 0.28);
    border-radius: 10px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(6px);
}

/* Card consistency and spacing */
.project-card {
    border: 1px solid rgba(0, 234, 255, 0.16);
    border-radius: 12px;
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.35);
    overflow: hidden;
}

.project-content {
    padding-bottom: 1rem;
}

@media (max-width: 768px) {
    .projects-info {
        margin: 0.75rem 0 1.25rem;
        padding: 0.8rem 0.95rem;
    }
    .project-card {
        border-radius: 10px;
    }
}

/* ===================================
   EDUCATION TIMELINE ALIGNMENT
   =================================== */

/* Fix timeline vertical alignment across browsers */
.timeline-item {
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
    position: relative;
}

.timeline-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    margin-top: 0;
}

.timeline-content {
    flex: 1;
    padding-top: 0;
}

/* ===================================
   LOADER OPTIMIZATIONS
   =================================== */

/* Prevent loader from blocking content */
.boot-loader {
    pointer-events: none;
}

.boot-loader.hidden {
    animation: fadeOut 0.4s ease-out forwards;
}

@keyframes fadeOut {
    to {
        opacity: 0;
        visibility: hidden;
    }
}

/* Skip loader button - Note: Primary styles in boot-loader.css */
/* Additional animation for skip button appearance */
.skip-loader-btn {
    opacity: 0;
    animation: skipBtnFadeIn 0.4s ease-in 2s forwards;
}

@keyframes skipBtnFadeIn {
    0% {
        opacity: 0;
        transform: translateY(-10px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hide skip button once loader is hidden */
.boot-loader.hidden + .skip-loader-btn {
    display: none;
}

/* ===================================
   PREFERS REDUCED MOTION
   =================================== */

/* Disable heavy animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    /* Keep essential UI feedback */
    .btn,
    .nav-link,
    .footer__social a,
    .project-card {
        transition-duration: 0.1s !important;
    }
    
    /* Disable background animations */
    .hero-particles,
    #vanta-bg,
    .footer::before {
        animation: none !important;
    }
    
    /* Disable boot loader animations */
    .boot-loader {
        display: none !important;
    }
}

/* ===================================
   CERTIFICATE VERIFICATION LINKS
   =================================== */

/* Ensure verify buttons have consistent styling */
.verify-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    min-height: 40px;
    transition: all 0.3s ease;
}

.verify-btn i {
    font-size: 0.9em;
}

/* ===================================
   MOBILE NAVIGATION KEYBOARD ACCESS
   =================================== */

/* Ensure mobile menu is properly accessible */
.nav-menu {
    -webkit-tap-highlight-color: transparent;
}

/* ===================================
   SECURITY LAB PROGRESS BAR
   =================================== */

/* Update progress bar dynamically via JavaScript */
.progress-bar[role="progressbar"] {
    position: relative;
}

/* Progress fill updates via JavaScript setting width */
.progress-fill {
    transition: width 0.3s ease;
}

/* ===================================
   FORM BUTTON ACCESSIBILITY
   =================================== */

/* Ensure all icon-only buttons have proper labels */
button[aria-label],
a[aria-label] {
    position: relative;
}

/* Add focus indicators for accessibility */
button:focus-visible,
a:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(0, 234, 255, 0.2);
}

/* ===================================
   TABLET-SPECIFIC FIXES
   =================================== */

@media (min-width: 768px) and (max-width: 1024px) {
    /* Adjust container padding for tablets */
    .container {
        padding-left: 2rem;
        padding-right: 2rem;
    }
    
    /* Ensure two-column grid on tablets */
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    /* Hero content layout */
    .hero-content {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
}

/* ===================================
   LAZY LOADING IMAGE FADE-IN
   =================================== */

/* Smooth fade-in for lazy-loaded images */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease-in;
}

img[loading="lazy"].loaded,
img[loading="lazy"]:not([src=""]) {
    opacity: 1;
}

/* ===================================
   HIGH CONTRAST MODE SUPPORT
   =================================== */

@media (prefers-contrast: high) {
    .nav-link::before,
    .nav-link.active::before {
        height: 3px;
    }
    
    .footer__social a,
    .btn {
        border-width: 2px;
    }
}