/* Mobile Menu Styles - Full Screen Dark Overlay */
@media (max-width: 767px) {
    .nav-menu {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100vw;
        height: 100vh;
        background: linear-gradient(135deg, #0E0E0E 0%, #1A1A1A 50%, #0E0E0E 100%);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        padding: var(--space-8);
        gap: var(--space-5);
        transition: opacity 0.3s ease, visibility 0.3s ease;
        z-index: 9999;
        overflow-y: auto;
        opacity: 0;
        visibility: hidden;
    }

    .nav-menu.active {
        display: flex;
        opacity: 1;
        visibility: visible;
    }

    /* Mobile menu logo */
    .nav-menu::before {
        content: 'BULUT VİNÇ';
        font-family: var(--font-heading);
        font-size: var(--text-3xl);
        font-weight: 900;
        color: var(--color-white);
        letter-spacing: 0.05em;
        margin-bottom: var(--space-8);
        text-align: center;
    }

    /* Yellow accent line under logo */
    .nav-menu::after {
        content: '';
        position: absolute;
        top: 140px;
        left: 50%;
        transform: translateX(-50%);
        width: 60px;
        height: 3px;
        background: var(--color-industrial-yellow);
        border-radius: 2px;
    }

    .nav-menu li {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }

    .nav-menu li a {
        display: block;
        padding: var(--space-4) var(--space-6);
        font-family: var(--font-heading);
        font-size: var(--text-xl);
        font-weight: 700;
        color: var(--color-white);
        text-transform: uppercase;
        letter-spacing: 0.05em;
        border-radius: var(--radius-md);
        transition: all var(--transition-fast);
        text-decoration: none !important;
        border: none !important;
    }

    .nav-menu li a:hover {
        color: var(--color-industrial-yellow);
        background-color: rgba(245, 196, 0, 0.1);
    }

    .nav-menu li a.active {
        color: var(--color-industrial-yellow);
        background-color: rgba(245, 196, 0, 0.15);
    }

    .nav-menu li a::after {
        display: none;
    }

    /* Hamburger transforms to X when active */
    .mobile-menu-toggle {
        z-index: 10000;
        position: relative;
    }

    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    /* Hero adjustments for mobile */
    .hero {
        padding: var(--space-8) 0;
    }

    .hero h1 {
        font-size: var(--text-3xl);
    }

    .hero p {
        font-size: var(--text-base);
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn-lg {
        width: 100%;
    }

    /* Trust badges responsive */
    .trust-badges {
        grid-template-columns: 1fr;
    }

    /* Services grid responsive */
    .services-grid {
        grid-template-columns: 1fr;
    }

    /* CTA buttons responsive */
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }

    .cta-buttons .btn {
        width: 100%;
    }

    /* Footer responsive */
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* Tablet adjustments */
@media (min-width: 768px) and (max-width: 1023px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .trust-badges {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Form error state */
input.error,
textarea.error,
select.error {
    border-color: var(--color-danger) !important;
}

/* Loading state for buttons */
.btn.loading {
    opacity: 0.7;
    pointer-events: none;
}

/* Smooth scroll padding for fixed header */
html {
    scroll-padding-top: 80px;
}

/* Header scrolled state */
.header.scrolled {
    box-shadow: var(--shadow-lg);
}