/* ========================================
   UTILITIES.CSS - Responsive Utilities & Helpers
   ========================================
   
   Merged from: breakpoints.css + responsive.css
   
   3-BREAKPOINT SYSTEM:
   --------------------
   Mobile:  0 - 767px    (base styles)
   Tablet:  768px - 1023px
   Desktop: 1024px+
   
   ======================================== */

/* ========================================
   Container System
   ======================================== */

.container {
    width: 100%;
    max-width: var(--container-max-width, 1200px);
    margin: 0 auto;
    padding-left: var(--container-padding-mobile, 16px);
    padding-right: var(--container-padding-mobile, 16px);
}

.container--narrow {
    max-width: 800px;
}

.container--wide {
    max-width: 1400px;
}

.container--full {
    max-width: 100%;
}

/* ========================================
   Visibility Utilities (3-breakpoint system)
   ======================================== */

/* Base state (shown by default) */
.hide-mobile,
.hide-tablet,
.hide-desktop { display: block; }

.show-mobile-only,
.show-tablet-only,
.show-desktop-only { display: none !important; }

/* Legacy support */
.off-mobile { display: block; }
.on-mobile { display: none; }

/* ========================================
   Flex Utilities
   ======================================== */

.flex-col-mobile {
    flex-direction: column;
}

.flex-col-tablet {
    flex-direction: row;
}

/* ========================================
   Text Utilities
   ======================================== */

.text-center-mobile {
    text-align: center;
}

.text-responsive-title {
    font-size: clamp(24px, 5vw, 50px);
    line-height: 1.2;
}

.text-responsive-subtitle {
    font-size: clamp(18px, 3vw, 28px);
    line-height: 1.3;
}

.text-responsive-body {
    font-size: clamp(14px, 2vw, 18px);
    line-height: 1.5;
}

/* ========================================
   Spacing Utilities
   ======================================== */

.gap-responsive {
    gap: var(--spacing-4, 16px);
}

.section-padding {
    padding-top: var(--section-spacing-sm, 32px);
    padding-bottom: var(--section-spacing-sm, 32px);
}

/* ========================================
   Grid Utilities
   ======================================== */

.grid-auto-fit {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-6, 24px);
}

.grid-cols-1 { grid-template-columns: 1fr; }

/* ========================================
   Width Utilities
   ======================================== */

.w-full-mobile {
    width: 100%;
}

/* ========================================
   Border Radius Utilities
   ======================================== */

.rounded-responsive-sm {
    border-radius: var(--radius-md, 8px);
}

.rounded-responsive-lg {
    border-radius: var(--radius-2xl, 16px);
}

/* ========================================
   Slider Navigation (Dots)
   ======================================== */

.slick-dots {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 0;
    margin: 20px 0 0;
    list-style: none;
}

.slick-dots li {
    margin: 0;
    padding: 0;
}

.slick-dots li button {
    width: 10px;
    height: 10px;
    padding: 0;
    border: none;
    border-radius: 50%;
    background: rgba(0, 102, 204, 0.3);
    font-size: 0;
    cursor: pointer;
    transition: all 0.3s ease;
}

.slick-dots li.slick-active button {
    background: #0066cc;
    transform: scale(1.2);
}

.slick-dots li button:hover {
    background: #0066cc;
}

.swiper-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    padding: 0;
    margin: 20px 0 0;
}

.swiper-pagination-bullet {
    width: 10px;
    height: 10px;
    background: rgba(0, 102, 204, 0.3);
    opacity: 1;
    transition: all 0.3s ease;
}

.swiper-pagination-bullet-active {
    background: #0066cc;
    transform: scale(1.2);
}

/* ========================================
   Image Containment
   ======================================== */

.product-img,
.hardware-card__img,
.something-card__img {
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

/* ========================================
   Safe Area Support (notched devices)
   ======================================== */

@supports (padding: env(safe-area-inset-bottom)) {
    .safe-area-bottom {
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    .safe-area-top {
        padding-top: env(safe-area-inset-top);
    }
}

@supports (padding: max(0px)) {
    .header {
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
    }
    
    .footer {
        padding-bottom: max(32px, env(safe-area-inset-bottom));
    }
}

/* ========================================
   TABLET AND UP (min-width: 768px)
   ======================================== */

@media (min-width: 768px) {
    .container {
        padding-left: var(--container-padding-tablet, 24px);
        padding-right: var(--container-padding-tablet, 24px);
    }
    
    /* Visibility */
    .hide-tablet { display: none !important; }
    .show-tablet-only { display: block !important; }
    .hide-desktop { display: none !important; }
    
    /* Flex */
    .flex-col-mobile {
        flex-direction: row;
    }
    
    /* Text */
    .text-center-mobile {
        text-align: left;
    }
    
    /* Spacing */
    .gap-responsive {
        gap: var(--spacing-6, 24px);
    }
    
    .section-padding {
        padding-top: var(--section-spacing-md, 48px);
        padding-bottom: var(--section-spacing-md, 48px);
    }
    
    /* Grid */
    .grid-cols-tablet-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-cols-tablet-3 { grid-template-columns: repeat(3, 1fr); }
    
    /* Width */
    .w-full-mobile {
        width: auto;
    }
    
    /* Border radius */
    .rounded-responsive-sm {
        border-radius: var(--radius-xl, 12px);
    }
    
    .rounded-responsive-lg {
        border-radius: var(--radius-3xl, 24px);
    }
}

/* ========================================
   DESKTOP AND UP (min-width: 1024px)
   ======================================== */

@media (min-width: 1024px) {
    .container {
        padding-left: var(--container-padding-desktop, 32px);
        padding-right: var(--container-padding-desktop, 32px);
    }
    
    /* Visibility */
    .hide-desktop { display: none !important; }
    .show-desktop-only { display: block !important; }
    .show-tablet-only { display: none !important; }
    
    /* Spacing */
    .gap-responsive {
        gap: var(--spacing-8, 32px);
    }
    
    .section-padding {
        padding-top: var(--section-spacing-lg, 64px);
        padding-bottom: var(--section-spacing-lg, 64px);
    }
    
    /* Grid */
    .grid-cols-desktop-3 { grid-template-columns: repeat(3, 1fr); }
    .grid-cols-desktop-4 { grid-template-columns: repeat(4, 1fr); }
    
    /* Border radius */
    .rounded-responsive-sm {
        border-radius: var(--radius-3xl, 24px);
    }
    
    .rounded-responsive-lg {
        border-radius: 100px 0;
    }
}

/* ========================================
   TABLET ONLY (768px - 1023px)
   ======================================== */

@media (max-width: 1023px) {
    /* Flex */
    .flex-col-tablet {
        flex-direction: column;
    }
    
    /* Legacy */
    .off-mobile {
        display: none !important;
    }
    
    .on-mobile {
        display: block !important;
    }
    
    /* Navigation */
    .header-nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: #fff;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 1000;
        padding: 80px 20px 20px;
        overflow-y: auto;
    }
    
    .header-nav.active {
        transform: translateX(0);
    }
    
    .header-nav__list {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .header-nav__link {
        font-size: 18px;
        padding: 12px 0;
        width: 100%;
        display: block;
    }
    
    /* Cards grid */
    .products-cards,
    .advantages-cards,
    .who-cards,
    .hardware-cards {
        gap: 20px;
    }
}

/* ========================================
   MOBILE ONLY (max-width: 767px)
   ======================================== */

@media (max-width: 767px) {
    /* Visibility */
    .hide-mobile { display: none !important; }
    .show-mobile-only { display: block !important; }
    
    /* Mobile spacing utilities */
    .p-mobile-sm { padding: var(--spacing-3, 12px) !important; }
    .p-mobile-md { padding: var(--spacing-4, 16px) !important; }
    .p-mobile-lg { padding: var(--spacing-6, 24px) !important; }
    
    .px-mobile-sm { padding-left: var(--spacing-3, 12px) !important; padding-right: var(--spacing-3, 12px) !important; }
    .px-mobile-md { padding-left: var(--spacing-4, 16px) !important; padding-right: var(--spacing-4, 16px) !important; }
    .px-mobile-lg { padding-left: var(--spacing-6, 24px) !important; padding-right: var(--spacing-6, 24px) !important; }
    
    .py-mobile-sm { padding-top: var(--spacing-3, 12px) !important; padding-bottom: var(--spacing-3, 12px) !important; }
    .py-mobile-md { padding-top: var(--spacing-4, 16px) !important; padding-bottom: var(--spacing-4, 16px) !important; }
    .py-mobile-lg { padding-top: var(--spacing-6, 24px) !important; padding-bottom: var(--spacing-6, 24px) !important; }
    
    /* Forms */
    .form__btn,
    .btn-form {
        width: 100%;
        min-height: 48px;
        font-size: 16px;
    }
    
    .form__input,
    .form__select {
        min-height: 48px;
        font-size: 16px;
    }
    
    /* Footer */
    .footer-top {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .footer-nav {
        text-align: center;
    }
    
    .footer-nav__title {
        margin-bottom: 12px;
    }
    
    .footer-nav ul {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    /* Images */
    .product-img,
    .hardware-card__img,
    .something-card__img {
        max-height: 200px;
    }
    
    /* Cards */
    .products-cards,
    .advantages-cards,
    .hardware-cards {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .who-cards {
        gap: 16px;
    }

    .who-card {
        padding: 20px;
    }

    .who::before {
        width: 100%;
        border-radius: 0;
    }
    
    /* Hero */
    .main,
    .mainPageHeader {
        padding: 80px 0 60px;
        min-height: auto;
    }
    
    .main__title {
        font-size: clamp(28px, 6vw, 42px);
        line-height: 1.2;
    }
    
    .main__descr {
        font-size: 16px;
        line-height: 1.5;
    }
    
    /* Sections */
    section {
        padding: 40px 0;
    }
    
    .container-header {
        margin-bottom: 24px;
    }
    
    .section-title {
        font-size: clamp(24px, 5vw, 32px);
        line-height: 1.2;
        margin-bottom: 12px;
    }
    
    .section-descr {
        font-size: 14px;
        line-height: 1.5;
    }
    
    /* Tables */
    .pricing-comparison__table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .pricing-comparison__table table {
        min-width: 600px;
    }
    
    /* Touch targets */
    a,
    button,
    .btn,
    input[type="submit"],
    input[type="button"] {
        min-height: 44px;
        min-width: 44px;
    }
    
    .header-nav__link,
    .footer-nav__link {
        padding: 12px 8px;
    }
}

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

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

@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */

@media print {
    .header,
    .footer,
    .mobile_header,
    .slick-dots,
    .swiper-pagination,
    .btn,
    nav {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
        color: #000;
        background: #fff;
    }
    
    a {
        color: #000;
        text-decoration: underline;
    }
    
    img {
        max-width: 100% !important;
    }
}