@font-face {
    font-family: 'Poppins', sans-serif;
    src: url('../../assets/fonts/Poppins/Poppins-Regular.ttf') format('truetype');
}
/* Base styles */
:root {
    --header-height: 80px;
    --header-padding: 2rem;
    --header-radius: 16px;
    --header-transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --primary-color: #000000;
    --secondary-color: #ffffff;
    --accent-color: #00a8ff;
    --text-color: #ffffff;
    --menu-bg: rgba(0, 0, 0, 0.98);
    --border-color: rgba(255, 255, 255, 0.1);
    --menu-spacing: 20px;
}

header {
    position: fixed;
    top: var(--menu-spacing);
    left: var(--menu-spacing);
    right: var(--menu-spacing);
    z-index: 1000;
    margin: 0 auto;
    max-width: 1200px;
    background-color: rgba(0, 0, 0, 0.7);
    border-radius: var(--header-radius);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    opacity: 1;
    transform: translateY(0);
    will-change: transform, opacity;
}

header.scrolled {
    transform: translateY(-100%);
    opacity: 0;
}

header.scrolled.show {
    transform: translateY(0);
    opacity: 1;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--header-padding);
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

/* Logo */
.logo {
    height: 100%;
    display: flex;
    align-items: center;
    z-index: 1100;
}

.logo-text {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-color);
    position: relative;
    transition: var(--header-transition);
    letter-spacing: 2px;
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    height: 0;
    background-color: var(--menu-bg);
    border-radius: var(--header-radius);
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: height 0.7s ease, 
                opacity 0.3s ease,
                visibility 0s 0.7s;
    z-index: 990;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.mobile-menu.active {
    height: 70vh;
    opacity: 1;
    visibility: visible;
    transition: height 0.7s ease, 
                opacity 0.75s ease,
                visibility 0s;
}

.mobile-menu-content {
    width: 100%;
    height: 100%;
    padding: 2rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-top: 25px;
    transition: opacity 0.2s ease;
    opacity: 0;
}

.mobile-menu.active .mobile-menu-content {
    opacity: 1;
    transition: opacity 0.2s ease 0.5s;
}

.mobile-menu:not(.active) .mobile-menu-content {
    opacity: 0;
    transition: opacity 0.2s ease;
}

.mobile-menu a {
    font-size: 1.3rem;
    color: var(--text-color);
    text-decoration: none;
    padding: 0.5rem 1rem;
    position: relative;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}

.mobile-menu a:hover {
    color: var(--accent-color);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1000;
    background: transparent;
    border: none;
    position: relative;
    width: 30px;
    height: 30px;
}

.hamburger-line {
    display: block;
    width: 30px;
    height: 2px;
    background-color: var(--text-color);
    position: absolute;
    left: 0;
    transform-origin: center;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    border-radius: 2px;
}

.hamburger-line:nth-child(1) {
    top: 8px;
}

.hamburger-line:nth-child(2) {
    top: 15px;
    transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), 
                opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.hamburger-line:nth-child(3) {
    top: 22px;
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
    background-color: var(--accent-color);
}

.hamburger.active .hamburger-line:nth-child(2) {
    opacity: 0;
    transform: translateX(-20px) scale(0);
}

.hamburger.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
    background-color: var(--accent-color);
}

.hamburger.active:hover .hamburger-line {
    background-color: var(--text-color);
}

/* Desktop Menu */
.desktop-menu {
    display: none;
    gap: 1.5rem;
    height: 100%;
    align-items: center;
}

.desktop-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    font-size: 1rem;
    height: 100%;
    display: flex;
    align-items: center;
}

.desktop-menu a:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .desktop-menu {
        display: none;
    }
}

@media (min-width: 769px) {
    .mobile-menu {
        display: none !important;
    }

    .hamburger {
        display: none;
    }

    .desktop-menu {
        display: flex;
    }
}

/* Accessibility */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* Menu open state */
body.menu-open {
    overflow: hidden;
    height: 100vh;
    touch-action: none;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}