/* ============================================
   CSS-ONLY RESPONSIVE NAVBAR
   No JavaScript - Pure CSS Hamburger Menu
   ============================================ */

/* Hide the checkbox input */
.nav-toggle {
    display: none;
}

/* Navbar Inner Layout */
.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

/* ============================================
   MOBILE STYLES (Default - Mobile First)
   ============================================ */

/* Hamburger Icon - Visible on Mobile Only */
.nav-hamburger {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 28px;
    height: 24px;
    cursor: pointer;
    z-index: 1000;
    position: relative;
}

.nav-hamburger span,
.nav-hamburger span::before,
.nav-hamburger span::after {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--text-main, #333333);
    border-radius: 3px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-hamburger span::before,
.nav-hamburger span::after {
    content: '';
    position: absolute;
    left: 0;
}

.nav-hamburger span::before {
    top: -8px;
}

.nav-hamburger span::after {
    top: 8px;
}

/* Animate Hamburger to X when checked */
.nav-toggle:checked+.nav-hamburger span {
    background-color: transparent;
}

.nav-toggle:checked+.nav-hamburger span::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle:checked+.nav-hamburger span::after {
    transform: rotate(-45deg);
    top: 0;
}

/* Mobile Menu - Hidden by Default */
.nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 280px;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: -5px 0 25px rgba(0, 0, 0, 0.1);
    padding: 5rem 2rem 2rem;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.4s, opacity 0.4s;
    z-index: 999;
    overflow-y: auto;
    visibility: hidden;
    opacity: 0;
    transform: translateX(100%);
}

/* Show Menu when Checkbox is Checked */
.nav-toggle:checked~.nav-menu {
    transform: translateX(0);
    visibility: visible;
    opacity: 1;
}

/* Mobile Menu Links - Vertical Stack */
.nav-menu .nav-links {
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.nav-menu .nav-links a {
    font-size: 1.1rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.2s;
}

.nav-menu .nav-links a:hover {
    color: var(--primary, #0EA5E9);
    padding-left: 0.5rem;
}

/* CTA Button in Mobile Menu */
.nav-menu .nav-cta {
    width: 100%;
    text-align: center;
}

/* Overlay when menu is open (optional but recommended) */
.nav-toggle:checked~.nav-menu::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.3);
    z-index: -1;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

/* ============================================
   TABLET & DESKTOP STYLES (≥768px)
   ============================================ */

@media (min-width: 768px) {

    /* Hide Hamburger Icon on Desktop */
    .nav-hamburger {
        display: none;
    }

    /* Show Menu Horizontally on Desktop */
    .nav-menu {
        position: static;
        width: auto;
        height: auto;
        background: transparent;
        backdrop-filter: none;
        box-shadow: none;
        padding: 0;
        display: flex;
        align-items: center;
        gap: 2rem;
        overflow-y: visible;
        visibility: visible;
        opacity: 1;
        transform: none;
    }

    /* Desktop Links - Horizontal */
    .nav-menu .nav-links {
        flex-direction: row;
        gap: 2rem;
        margin-bottom: 0;
    }

    .nav-menu .nav-links a {
        font-size: 0.95rem;
        padding: 0;
        border-bottom: none;
    }

    .nav-menu .nav-links a:hover {
        padding-left: 0;
        color: var(--primary, #0EA5E9);
    }

    /* CTA Button on Desktop */
    .nav-menu .nav-cta {
        width: auto;
    }
}

/* ============================================
   ACCESSIBILITY IMPROVEMENTS
   ============================================ */

/* Focus styles for keyboard navigation */
.nav-hamburger:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 4px;
    border-radius: 4px;
}

.nav-menu .nav-links a:focus-visible,
.nav-menu .nav-cta:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Prevent body scroll when menu is open (optional enhancement) */
.nav-toggle:checked~body {
    overflow: hidden;
}

/* ============================================
   SMOOTH ANIMATIONS & POLISH
   ============================================ */

/* Stagger animation for menu items when opening */
@media (max-width: 767px) {
    .nav-toggle:checked~.nav-menu .nav-links a {
        animation: slideInRight 0.3s ease forwards;
        opacity: 0;
    }

    .nav-toggle:checked~.nav-menu .nav-links a:nth-child(1) {
        animation-delay: 0.1s;
    }

    .nav-toggle:checked~.nav-menu .nav-links a:nth-child(2) {
        animation-delay: 0.15s;
    }

    .nav-toggle:checked~.nav-menu .nav-links a:nth-child(3) {
        animation-delay: 0.2s;
    }

    .nav-toggle:checked~.nav-menu .nav-links a:nth-child(4) {
        animation-delay: 0.25s;
    }

    .nav-toggle:checked~.nav-menu .nav-cta {
        animation: slideInRight 0.3s ease forwards 0.3s;
        opacity: 0;
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}