/* ============================================
   LEDСоюз — Components
   Glassmorphism Edition
   Buttons, Cards, Forms, Popup, Marquee
   ============================================ */

/* ── Progressive Enhancement Base ── */
/* Fallback for browsers without backdrop-filter */
.glass-card,
.card,
.popup-content,
.form-input,
.marquee-item,
.glass-nav,
.glass-modal,
.glass-btn {
    background: rgba(28, 28, 30, 0.92);
}

@supports (backdrop-filter: blur(1px)) {
    .glass-card,
    .card,
    .popup-content,
    .form-input,
    .marquee-item {
        background: var(--glass-bg);
    }

    .glass-nav {
        background: var(--glass-bg-heavy);
    }

    .glass-modal {
        background: var(--glass-bg-heavy);
    }
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 14px 32px;
    font-family: var(--font-display);
    font-size: var(--fs-body);
    font-weight: var(--fw-semibold);
    border-radius: var(--radius-pill);
    transition: all var(--transition-base);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    text-decoration: none;
}

/* Shimmer sweep on hover */
.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.18) 50%, transparent 60%);
    transform: translateX(-100%);
    transition: transform 0.55s ease;
    pointer-events: none;
}

.btn:hover::after {
    transform: translateX(100%);
}

.btn--primary {
    background: var(--gradient-brand);
    color: var(--bg-primary);
    border: none;
    box-shadow: var(--glow-blue);
}

.btn--primary:hover {
    background: var(--gradient-brand-hover);
    box-shadow: var(--glow-blue-strong);
    transform: translateY(-2px);
    color: var(--bg-primary);
}

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

/* Glass secondary button */
.btn--secondary {
    background: var(--glass-bg-light);
    color: var(--text-primary);
    border: var(--glass-border);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    box-shadow: var(--glass-shadow);
}

.btn--secondary:hover {
    background: var(--glass-bg);
    border: var(--glass-border-glow);
    color: var(--color-blue);
    box-shadow: var(--glass-shadow-colored);
    transform: translateY(-2px);
}

.btn--glow {
    background: var(--gradient-brand);
    color: var(--bg-primary);
    border: none;
    animation: pulse-glow 2s ease-in-out infinite;
}

/* Bright white CTA button — used for "Хочу адресную программу" on blue cta-section backgrounds */
.btn--cta-bright {
    background: #fff;
    color: #0066cc;
    font-weight: 800;
    font-size: 1.15rem;
    padding: 1rem 3rem;
    border-radius: 50px;
    box-shadow: 0 0 40px rgba(0, 191, 255, 0.5), 0 8px 24px rgba(0, 0, 0, 0.3);
    border: 3px solid rgba(255, 255, 255, 0.8);
    letter-spacing: 0.03em;
    white-space: nowrap;
}

.btn--cta-bright:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 50px rgba(0, 191, 255, 0.65), 0 10px 28px rgba(0, 0, 0, 0.35);
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: var(--glow-blue); }
    50%       { box-shadow: var(--glow-blue-strong); }
}

.btn--sm {
    padding: 10px 20px;
    font-size: var(--fs-small);
}

.btn--lg {
    padding: 18px 40px;
    font-size: var(--fs-body-lg);
}

/* ── Glass Card ── */
.card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-radius: var(--glass-radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
}

/* Top-left glass shine highlight */
.card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: var(--gradient-glass-shine);
    pointer-events: none;
    z-index: 0;
    opacity: 0.8;
    transition: opacity var(--transition-base);
}

/* Neon gradient border glow */
.card::after {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    padding: 1px;
    background: var(--gradient-border-subtle);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0.5;
    transition: opacity var(--transition-base);
    pointer-events: none;
    z-index: 1;
}

.card > * {
    position: relative;
    z-index: 2;
}

.card:hover {
    transform: translateY(-8px) scale(1.01);
    border: var(--glass-border-hover);
    box-shadow: var(--glass-shadow-elevated);
    background: var(--glass-bg-heavy);
}

.card:hover::before {
    opacity: 1;
}

.card:hover::after {
    opacity: 0.9;
    background: var(--gradient-border);
}

.card__icon {
    width: 56px;
    height: 56px;
    border-radius: var(--glass-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    background: rgba(0, 191, 255, 0.10);
    border: 1px solid rgba(0, 191, 255, 0.20);
    color: var(--color-cyan);
    font-size: 1.5rem;
    box-shadow: 0 4px 16px rgba(0, 191, 255, 0.15);
}

.card__icon--lime {
    background: rgba(255, 45, 85, 0.10);
    border-color: rgba(255, 45, 85, 0.20);
    color: var(--color-pink);
    box-shadow: 0 4px 16px rgba(255, 45, 85, 0.15);
}

.card__icon--orange {
    background: rgba(255, 149, 0, 0.10);
    border-color: rgba(255, 149, 0, 0.20);
    color: var(--color-orange);
    box-shadow: 0 4px 16px rgba(255, 149, 0, 0.15);
}

.card__title {
    font-size: var(--fs-h4);
    margin-bottom: var(--space-sm);
}

.card__text {
    font-size: var(--fs-small);
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* ── Counter Cards ── */
.counter-card {
    text-align: center;
    padding: var(--space-2xl);
    overflow: visible;
}

.counter-value {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: var(--fw-extrabold);
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
    margin-bottom: var(--space-sm);
    white-space: nowrap;
    overflow: visible;
    font-variant-numeric: tabular-nums;
    text-align: center;
    min-width: 3ch;
    display: block;
}

.counter-label {
    font-size: var(--fs-small);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ── Form Elements ── */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    font-size: var(--fs-small);
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
    font-weight: var(--fw-medium);
}

.form-input {
    width: 100%;
    padding: 16px 24px;
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: var(--glass-border);
    border-radius: var(--glass-radius);
    color: var(--text-primary);
    font-size: var(--fs-body);
    transition: all var(--transition-base);
    outline: none;
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.25),
                var(--glass-shadow);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-input:focus {
    border: var(--glass-border-glow);
    background: var(--glass-bg);
    box-shadow: var(--glow-neon),
                inset 0 2px 8px rgba(0, 0, 0, 0.25);
}

.form-input.error {
    border-color: var(--color-orange);
    box-shadow: var(--glow-orange), inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

.form-error {
    font-size: var(--fs-xs);
    color: var(--color-orange);
    margin-top: var(--space-xs);
    display: none;
}

.form-input.error + .form-error {
    display: block;
}

/* Checkbox */
.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    cursor: pointer;
    font-size: var(--fs-small);
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.form-checkbox input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    min-width: 20px;
    border: var(--glass-border);
    border-radius: var(--radius-sm);
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
    margin-top: 1px;
}

.form-checkbox input[type="checkbox"]:checked {
    background: var(--color-blue);
    border-color: var(--color-blue);
    box-shadow: 0 0 12px rgba(0, 122, 255, 0.5);
}

.form-checkbox input[type="checkbox"]:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
}

/* ── Popup (Glass Modal) ── */
.popup-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: var(--z-popup);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.popup-overlay.active {
    opacity: 1;
    visibility: visible;
}

.popup-content {
    background: var(--glass-bg-heavy);
    backdrop-filter: var(--glass-blur-strong);
    -webkit-backdrop-filter: var(--glass-blur-strong);
    border: var(--glass-border-hover);
    border-radius: var(--glass-radius-xl);
    padding: var(--space-2xl);
    max-width: 460px;
    width: 100%;
    position: relative;
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-spring);
    box-shadow: var(--glass-shadow-elevated);
    /* Top-left glass shine */
    background-image: var(--gradient-glass-shine);
    background-blend-mode: overlay;
}

.popup-overlay.active .popup-content {
    transform: scale(1) translateY(0);
}

.popup-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    transition: all var(--transition-fast);
    font-size: 1.25rem;
    background: var(--glass-bg-light);
    border: var(--glass-border);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
}

.popup-close:hover {
    color: var(--text-primary);
    background: var(--glass-bg);
    border: var(--glass-border-hover);
}

.popup-title {
    font-size: var(--fs-h3);
    margin-bottom: var(--space-sm);
}

.popup-subtitle {
    font-size: var(--fs-small);
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

/* ── Marquee (Partners) ── */
.marquee {
    overflow: hidden;
    position: relative;
    padding: var(--space-xl) 0;
}

.marquee::before,
.marquee::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 120px;
    z-index: 2;
    pointer-events: none;
}

.marquee::before {
    left: 0;
    background: linear-gradient(90deg, var(--bg-primary) 0%, transparent 100%);
}

.marquee::after {
    right: 0;
    background: linear-gradient(270deg, var(--bg-primary) 0%, transparent 100%);
}

.marquee-track {
    display: flex;
    gap: var(--space-2xl);
    animation: marquee-scroll 40s linear infinite;
    width: max-content;
}

.marquee:hover .marquee-track {
    animation-play-state: paused;
}

.marquee-item {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-lg);
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: var(--glass-border);
    border-radius: var(--glass-radius);
    min-width: 140px;
    height: 70px;
    transition: all var(--transition-fast);
    box-shadow: var(--glass-shadow);
}

.marquee-item:hover {
    background: var(--glass-bg);
    border: var(--glass-border-hover);
    box-shadow: var(--glass-shadow-elevated);
    transform: translateY(-2px);
}

.marquee-item img {
    max-height: 40px;
    max-width: 110px;
    object-fit: contain;
    mix-blend-mode: lighten;
    opacity: 0.8;
    transition: all var(--transition-fast);
}

.marquee-item:hover img {
    opacity: 1;
    transform: scale(1.05);
}

@keyframes marquee-scroll {
    0%   { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ── Social Links ── */
.social-links {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.social-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--glass-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    transition: all var(--transition-base);
    border: var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.social-icon:hover {
    background: var(--glass-bg);
    border: var(--glass-border-hover);
    transform: translateY(-3px);
    box-shadow: var(--glass-shadow-colored);
}

.social-icon img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    transition: transform var(--transition-fast);
}

.social-icon:hover img {
    transform: scale(1.1);
}

/* ── Click to reveal ── */
.reveal-contact {
    cursor: pointer;
    padding: var(--space-sm) var(--space-md);
    background: var(--glass-bg-light);
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
    border: var(--glass-border);
    border-radius: var(--glass-radius);
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    transition: all var(--transition-base);
    color: var(--text-secondary);
    font-size: var(--fs-body);
    box-shadow: var(--glass-shadow);
}

.reveal-contact:hover {
    background: var(--glass-bg);
    border: var(--glass-border-glow);
    color: var(--color-blue);
    box-shadow: var(--glass-shadow-colored);
}

.reveal-contact.revealed {
    color: var(--text-primary);
    cursor: default;
}

/* ── Badge ── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    backdrop-filter: var(--glass-blur-light);
    -webkit-backdrop-filter: var(--glass-blur-light);
}

.badge--blue {
    background: rgba(0, 122, 255, 0.15);
    border: 1px solid rgba(0, 122, 255, 0.30);
    color: var(--color-blue-light);
    box-shadow: 0 0 12px rgba(0, 122, 255, 0.15);
}

.badge--lime {
    background: rgba(255, 45, 85, 0.15);
    border: 1px solid rgba(255, 45, 85, 0.30);
    color: var(--color-pink);
    box-shadow: 0 0 12px rgba(255, 45, 85, 0.15);
}

.badge--orange {
    background: rgba(255, 149, 0, 0.15);
    border: 1px solid rgba(255, 149, 0, 0.30);
    color: var(--color-orange);
    box-shadow: 0 0 12px rgba(255, 149, 0, 0.15);
}

/* ── Accessibility ── */
@media (prefers-reduced-motion: reduce) {
    .card,
    .btn,
    .social-icon,
    .marquee-item {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: rgba(28, 28, 30, 0.92);
        transition: none;
    }

    .marquee-track {
        animation: none;
    }
}

@media (prefers-contrast: more) {
    .card {
        background: rgba(28, 28, 30, 0.95);
        border: 1px solid rgba(255, 255, 255, 0.35);
    }

    .badge--blue,
    .badge--lime,
    .badge--orange {
        border-width: 2px;
    }
}
/* ── Back to Top Button ── */
.back-to-top {
    position: fixed;
    right: var(--space-lg);
    bottom: var(--space-lg);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-brand);
    color: var(--bg-primary);
    font-size: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--glow-blue);
    opacity: 0;
    visibility: hidden;
    transform: translateY(12px);
    transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
    z-index: var(--z-header);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

body.cookie-banner-open .back-to-top {
    bottom: 92px;
}

@media (max-width: 640px) {
    body.cookie-banner-open .back-to-top {
        bottom: 160px;
    }
}

.back-to-top:hover {
    box-shadow: var(--glow-blue-strong);
    transform: translateY(-3px);
}

@media (max-width: 640px) {
    .back-to-top {
        right: var(--space-md);
        bottom: var(--space-md);
        width: 42px;
        height: 42px;
    }
}

/* ── Cookie Consent Banner ── */
.cookie-consent {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-overlay);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
    padding: var(--space-lg) var(--container-padding);
    background: var(--glass-bg-heavy);
    backdrop-filter: var(--glass-blur-strong);
    -webkit-backdrop-filter: var(--glass-blur-strong);
    border-top: var(--glass-border);
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.4);
    transform: translateY(100%);
    transition: transform var(--transition-base);
}

.cookie-consent.visible {
    transform: translateY(0);
}

.cookie-consent__text {
    flex: 1 1 420px;
    margin-bottom: 0;
    font-size: var(--fs-small);
    color: var(--text-secondary);
}

.cookie-consent__text a {
    color: var(--color-blue);
}

.cookie-consent__actions {
    display: flex;
    gap: var(--space-sm);
    flex-shrink: 0;
}

@media (max-width: 640px) {
    .cookie-consent {
        flex-direction: column;
        align-items: stretch;
        text-align: center;
    }

    .cookie-consent__actions {
        justify-content: center;
    }
}

/* ── Language Switcher ──
   Links to the equivalent page under each language's static /{lang}/ path. */
.lang-switcher {
    position: relative;
    display: inline-flex;
    margin-left: var(--space-sm);
}

.lang-switcher__trigger {
    white-space: nowrap;
    padding: 8px 14px;
    gap: 4px;
    font-size: var(--fs-small);
}

.lang-switcher__menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    display: none;
    flex-direction: column;
    gap: 2px;
    min-width: 180px;
    max-height: 320px;
    overflow-y: auto;
    padding: var(--space-xs);
    background: var(--bg-secondary);
    border: var(--glass-border);
    border-radius: var(--glass-radius);
    box-shadow: var(--glass-shadow-elevated);
    z-index: var(--z-overlay);
}

.lang-switcher.open .lang-switcher__menu {
    display: flex;
}

.lang-switcher__item {
    display: block;
    width: 100%;
    text-align: left;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: var(--fs-small);
    color: var(--text-secondary);
    background: none;
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.lang-switcher__item:hover {
    background: var(--glass-bg);
    color: var(--text-primary);
}

.lang-switcher__item.active {
    color: var(--color-blue);
    font-weight: var(--fw-semibold);
}

/* Mobile menu variant */
.lang-switcher--mobile {
    margin: var(--space-lg) 0 0;
}

.lang-switcher--mobile .lang-switcher__menu {
    position: static;
    display: none;
    margin-top: var(--space-sm);
    box-shadow: none;
    max-height: 240px;
}

.lang-switcher--mobile.open .lang-switcher__menu {
    display: flex;
}

@media (min-width: 1025px) {
    .lang-switcher--mobile {
        display: none;
    }
}

@media (max-width: 1024px) {
    .header__nav > .lang-switcher:not(.lang-switcher--mobile) {
        display: none;
    }
}