/**
 * ============================================================================
 * Aitech Components CSS
 * ============================================================================
 * Version: 1.0.0
 * Date: 23 Feb 2026
 * Branch: restyling
 *
 * Modern component styles using Design System variables
 * Extends design-system.css with Aitech-specific components
 * ============================================================================
 */

/* ============================================================================
   HEADER / NAVBAR
   ============================================================================ */

#header {
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    padding: var(--spacing-3) 0;
}

#header.header-scrolled {
    box-shadow: var(--shadow-md);
}

/* Logo */
#header .logo img {
    max-height: 50px;
    transition: var(--transition-base);
}

/* Desktop Navigation */
.nav-menu ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    gap: var(--spacing-1);
}

.nav-menu li {
    position: relative;
}

.nav-menu > ul > li {
    white-space: nowrap;
}

.nav-menu a,
.nav-menu a:focus {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-2) var(--spacing-4);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    white-space: nowrap;
    transition: var(--transition-base);
    border-radius: var(--radius-base);
    text-decoration: none;
}

.nav-menu a:hover,
.nav-menu .active > a,
.nav-menu li:hover > a {
    color: var(--color-primary-500);
    background-color: var(--color-primary-50);
}

/* Dropdown Navigation */
.nav-menu .drop-down ul {
    display: block;
    position: absolute;
    left: 0;
    top: calc(100% + var(--spacing-2));
    margin: 0;
    padding: var(--spacing-2) 0;
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-lg);
    min-width: 220px;
    transition: var(--transition-base);
}

.nav-menu .drop-down:hover > ul {
    opacity: 1;
    visibility: visible;
}

.nav-menu .drop-down li {
    min-width: 220px;
}

.nav-menu .drop-down ul a {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
}

.nav-menu .drop-down ul a:hover,
.nav-menu .drop-down ul .active > a,
.nav-menu .drop-down ul li:hover > a {
    color: var(--color-primary-500);
    background-color: var(--color-primary-50);
}

/* CTA Button - Phone */
.get-started-btn {
    margin-left: var(--spacing-6);
    padding: var(--spacing-2) var(--spacing-6);
    font-family: var(--font-primary);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-sm);
    color: var(--color-white);
    background-color: var(--color-primary-500);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    box-shadow: var(--shadow-sm);
}

.get-started-btn:hover {
    background-color: var(--color-primary-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    color: var(--color-white);
}

.get-started-btn i {
    font-size: var(--font-size-lg);
}

/* ============================================================================
   HERO / CAROUSEL
   ============================================================================ */

.carousel {
    margin-top: 70px; /* Offset for fixed header */
}

.carousel-item {
    position: relative;
}

.carousel-item img {
    width: 100%;
    height: auto;
    object-fit: cover;
}

/* Modern Carousel Controls */
.carousel-control-prev,
.carousel-control-next {
    width: 48px;
    height: 48px;
    background-color: var(--color-white);
    border-radius: var(--radius-full);
    opacity: 0.9;
    top: 50%;
    transform: translateY(-50%);
    transition: var(--transition-base);
}

.carousel-control-prev {
    left: var(--spacing-4);
}

.carousel-control-next {
    right: var(--spacing-4);
}

.carousel-control-prev:hover,
.carousel-control-next:hover {
    opacity: 1;
    background-color: var(--color-primary-500);
}

.carousel-control-prev-icon,
.carousel-control-next-icon {
    filter: invert(1);
}

.carousel-control-prev:hover .carousel-control-prev-icon,
.carousel-control-next:hover .carousel-control-next-icon {
    filter: invert(0);
}

/* ============================================================================
   SECTIONS
   ============================================================================ */

section {
    padding: var(--spacing-24) 0;
}

.section-bg {
    background-color: var(--color-secondary-50);
}

.section-title {
    text-align: center;
    padding-bottom: var(--spacing-8);
}

.section-title h2 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    margin-bottom: var(--spacing-2);
    padding-bottom: var(--spacing-2);
    color: var(--color-text-tertiary);
    letter-spacing: 2px;
}

.section-title p {
    margin-bottom: 0;
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary-500);
}

/* ============================================================================
   CUSTOM BUTTONS
   ============================================================================ */

/* Legacy button - modernized */
.btn-aitech {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-family: var(--font-primary);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    color: var(--color-white);
    background-color: var(--color-primary-500);
    border: 2px solid var(--color-primary-500);
    border-radius: var(--radius-base);
    transition: var(--transition-base);
    text-decoration: none;
    cursor: pointer;
}

.btn-aitech:hover {
    background-color: var(--color-primary-700);
    border-color: var(--color-primary-700);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    color: var(--color-white);
}

.btn-aitech:active {
    transform: translateY(0);
}

/* Learn More Button */
.learn-more-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-family: var(--font-primary);
    font-weight: var(--font-weight-semibold);
    font-size: var(--font-size-base);
    color: var(--color-primary-500);  /* Ciano - Brand */
    background-color: transparent;
    border: 2px solid var(--color-primary-500);
    border-radius: var(--radius-base);
    transition: var(--transition-base);
    text-decoration: none;
}

.learn-more-btn:hover {
    background-color: var(--color-accent-500);  /* Orange - Energy */
    border-color: var(--color-accent-500);
    color: var(--color-white);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(251, 146, 60, 0.3);  /* Orange glow */
}

.learn-more-btn::after {
    content: '→';
    font-size: var(--font-size-lg);
    transition: var(--transition-base);
}

.learn-more-btn:hover::after {
    transform: translateX(4px);
}

/* ============================================================================
   TEXT UTILITIES
   ============================================================================ */

/* Brand text color - legacy class modernized */
.aitech {
    color: var(--color-primary-500);
    font-weight: var(--font-weight-semibold);
}

.icona_blu {
    color: var(--color-primary-500);
}

/* ============================================================================
   ABOUT SECTION
   ============================================================================ */

#about .content {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
}

#about .content p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-4);
}

/* ============================================================================
   COUNTS SECTION
   ============================================================================ */

#counts {
    padding: var(--spacing-16) 0;
}

#counts .counters {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

#counts .counters span {
    font-size: var(--font-size-6xl);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary-500);
    display: block;
    margin-bottom: var(--spacing-2);
    line-height: 1;
}

#counts .counters p {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

/* ============================================================================
   FOOTER
   ============================================================================ */

#footer {
    background-color: var(--color-secondary-900);
    color: var(--color-secondary-100);
    font-size: var(--font-size-sm);
}

#footer .footer-top {
    padding: var(--spacing-16) 0 var(--spacing-8) 0;
    border-bottom: 1px solid var(--color-secondary-700);
    /* WCAG 2.1 AA Fix: Override inherited light text color for light background */
    color: var(--color-text-primary);
    font-weight: 600;
}

#footer h3,
#footer h4 {
    color: var(--color-white);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-4);
}

/* WCAG 2.1 AA Fix: Dark text for h3 logo in footer-top (light background) */
#footer .footer-top h3 {
    color: var(--color-text-primary);
    font-weight: 700;
    font-size: 1.5rem;
}

#footer .footer-contact p {
    line-height: var(--line-height-relaxed);
}

/* WCAG 2.1 AA Fix: Ensure good contrast for footer-top paragraphs */
#footer .footer-top p {
    color: var(--color-text-primary);
    font-weight: 600;
}

#footer .footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

#footer .footer-links ul li {
    padding: var(--spacing-1) 0;
    display: flex;
    align-items: flex-start;
}

#footer .footer-links ul li i {
    color: var(--color-primary-300);
    margin-right: var(--spacing-2);
    font-size: var(--font-size-lg);
    line-height: 1;
}

/* WCAG 2.1 AA Fix: Dark icons on light background in footer-top */
#footer .footer-top .footer-links ul li i {
    color: var(--color-primary-700);
}

#footer .footer-links ul a {
    color: var(--color-secondary-300);
    transition: var(--transition-base);
    text-decoration: none;
}

/* WCAG 2.1 AA Fix: Dark text on light background in footer-top */
#footer .footer-top .footer-links ul a {
    color: var(--color-text-primary);
    font-weight: 600;
}

#footer .footer-links ul a:hover {
    color: var(--color-primary-300);
}

#footer .footer-top .footer-links ul a:hover {
    color: var(--color-primary-700);
}

#footer .footer-newsletter .btn-aitech {
    margin-top: var(--spacing-2);
}

#footer .copyright {
    padding: var(--spacing-8) 0;
}

#footer .credits a {
    color: var(--color-primary-300);
    transition: var(--transition-base);
    text-decoration: none;
}

#footer .credits a:hover {
    color: var(--color-primary-100);
}

#footer .social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    background-color: var(--color-secondary-700);
    color: var(--color-white);
    font-size: var(--font-size-lg);
    margin-left: var(--spacing-2);
    transition: var(--transition-base);
    text-decoration: none;
}

#footer .social-links a:hover {
    background-color: var(--color-primary-500);
    transform: translateY(-2px);
}

/* ============================================================================
   MODALS
   ============================================================================ */

.modal-header {
    background-color: var(--color-primary-500);
    color: var(--color-white);
    border-bottom: none;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.modal-header .close {
    color: var(--color-white);
    opacity: 0.8;
    transition: var(--transition-base);
}

.modal-header .close:hover {
    opacity: 1;
}

.modal-content {
    border-radius: var(--radius-lg);
    border: none;
    box-shadow: var(--shadow-2xl);
}

.modal-body {
    padding: var(--spacing-6);
}

.modal-footer {
    border-top: 1px solid var(--color-secondary-200);
    padding: var(--spacing-4) var(--spacing-6);
}

/* Form Controls in Modals */
.modal-body .form-group {
    margin-bottom: var(--spacing-4);
}

.modal-body .form-control {
    border: 2px solid var(--color-secondary-300);
    border-radius: var(--radius-base);
    padding: var(--spacing-3);
    font-family: var(--font-primary);
    transition: var(--transition-base);
}

.modal-body .form-control:focus {
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(62, 205, 255, 0.1);
    outline: none;
}

/* ============================================================================
   BACK TO TOP BUTTON
   ============================================================================ */

.back-to-top {
    position: fixed;
    display: none;
    right: var(--spacing-4);
    bottom: var(--spacing-4);
    z-index: 996;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background-color: var(--color-primary-500);
    color: var(--color-white);
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
    box-shadow: var(--shadow-lg);
}

.back-to-top:hover {
    background-color: var(--color-primary-700);
    color: var(--color-white);
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

/* ============================================================================
   PRELOADER
   ============================================================================ */

#preloader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    overflow: hidden;
    background: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
}

#preloader:before {
    content: "";
    position: absolute;
    border: 4px solid var(--color-primary-100);
    border-radius: var(--radius-full);
    border-top: 4px solid var(--color-primary-500);
    width: 60px;
    height: 60px;
    animation: preloader-spin 1s linear infinite;
}

@keyframes preloader-spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* ============================================================================
   RESPONSIVE OVERRIDES
   ============================================================================ */

/* Tablet and below */
@media (max-width: 1024px) {
    .get-started-btn {
        margin-left: var(--spacing-4);
        padding: var(--spacing-2) var(--spacing-4);
        font-size: var(--font-size-xs);
    }

    .get-started-btn i {
        display: none;
    }

    section {
        padding: var(--spacing-16) 0;
    }
}

/* Mobile */
@media (max-width: 768px) {
    #header .logo img {
        max-height: 40px;
    }

    .section-title p {
        font-size: var(--font-size-4xl);
    }

    #counts .counters span {
        font-size: var(--font-size-4xl);
    }

    #counts .counters p {
        font-size: var(--font-size-sm);
    }

    section {
        padding: var(--spacing-12) 0;
    }

    .carousel {
        margin-top: 60px;
    }
}

/* ============================================================================
   TECHNOLOGY BADGES
   ============================================================================ */

.badge-tech {
    display: inline-block;
    padding: var(--spacing-2) var(--spacing-4);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary-700);
    background-color: var(--color-primary-100);
    border: 1px solid var(--color-primary-200);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
    white-space: nowrap;
}

.badge-tech:hover {
    background-color: var(--color-primary-500);
    border-color: var(--color-primary-500);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============================================================================
   CERTIFICATIONS SECTION
   ============================================================================ */

.certifications-section {
    padding: var(--spacing-12) 0;
    background-color: rgba(8, 145, 178, 0.05);
    border-top: 1px solid rgba(8, 145, 178, 0.1);
}

.certifications-title {
    /* WCAG 2.1 AA Fix: Changed from var(--color-primary-500) to dark color */
    color: var(--color-text-primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-4);
}

.cert-card {
    background: white;
    padding: 1rem;
    border-radius: var(--radius-base);
    box-shadow: var(--shadow-sm);
    margin-bottom: 0.5rem;
    text-align: center;
    min-width: 150px;
}

.cert-icon {
    font-size: 2rem;
    color: var(--color-primary-700);
}

.cert-name {
    font-size: var(--font-size-xs);
    font-weight: 600;
    /* WCAG 2.1 AA Fix: Use dark color for better contrast */
    color: var(--color-text-primary);
}

.cert-subtitle {
    font-size: 0.7rem;
    /* WCAG 2.1 AA Fix: Changed from var(--color-text-tertiary) to primary */
    color: var(--color-text-primary);
}

/* ============================================================================
   DARK MODE SUPPORT
   ============================================================================ */

@media (prefers-color-scheme: dark) {
    #header {
        background: var(--color-bg-primary);
        border-bottom: 1px solid var(--color-border-primary);
    }

    .nav-menu .drop-down ul {
        background: var(--color-bg-secondary);
    }

    .section-bg {
        background-color: var(--color-bg-secondary);
    }

    .carousel-control-prev,
    .carousel-control-next {
        background-color: var(--color-bg-secondary);
    }
}

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

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}