/* =============================================
   RESET & BASE
   ============================================= */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #1A1A2E;
    background: #FFFFFF;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: #2196F3;
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #1565C0;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    font-size: inherit;
}

:focus-visible {
    outline: 2px solid #2196F3;
    outline-offset: 2px;
}

/* =============================================
   UTILITIES
   ============================================= */
.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* =============================================
   HEADER
   ============================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    transition: background 0.3s, box-shadow 0.3s;
}

.header--scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.header__logo {
    font-size: 18px;
    font-weight: 700;
    color: #16213E;
    white-space: nowrap;
}

.header__logo:hover {
    color: #2196F3;
}

.header__nav {
    display: none;
    gap: 24px;
}

.header__link {
    font-size: 14px;
    font-weight: 500;
    color: #1A1A2E;
    transition: color 0.2s;
    white-space: nowrap;
}

.header__link:hover {
    color: #2196F3;
}

.header__link--cta {
    color: #FFFFFF;
    background: #2196F3;
    padding: 6px 16px;
    border-radius: 6px;
    font-weight: 600;
}

.header__link--cta:hover {
    color: #FFFFFF;
    background: #1976D2;
}

.header__right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Language switch */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    border-radius: 6px;
    background: #F8F9FA;
    font-size: 13px;
    font-weight: 600;
    color: #555;
}

.lang-switch__option {
    cursor: pointer;
    padding: 2px 4px;
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
}

.lang-switch__option.active {
    color: #2196F3;
    background: #E8F4FD;
}

.lang-switch__sep {
    color: #CCC;
}

/* Burger */
.header__burger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 4px;
}

.header__burger span {
    display: block;
    width: 22px;
    height: 2px;
    background: #1A1A2E;
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
}

.header__burger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.header__burger.active span:nth-child(2) {
    opacity: 0;
}

.header__burger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* =============================================
   MOBILE MENU
   ============================================= */
.mobile-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 999;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 40px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu__nav {
    display: flex;
    flex-direction: column;
    gap: 24px;
    text-align: center;
}

.mobile-menu__link {
    font-size: 20px;
    font-weight: 600;
    color: #1A1A2E;
    transition: color 0.2s;
}

.mobile-menu__link:hover {
    color: #2196F3;
}

/* =============================================
   HERO
   ============================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center top;
    background-repeat: no-repeat;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.45) 0%,
        rgba(0, 0, 0, 0.55) 100%
    );
}

.hero__content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 100px 20px 60px;
}

.hero__title {
    font-size: 32px;
    font-weight: 700;
    color: #FFFFFF;
    line-height: 1.2;
    margin-bottom: 16px;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.hero__subtitle {
    font-size: 16px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.6;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.hero__buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

/* =============================================
   BUTTONS
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn--primary {
    background: linear-gradient(135deg, #1976D2, #1565C0);
    color: #FFFFFF;
    box-shadow: 0 4px 14px rgba(25, 118, 210, 0.35);
}

.btn--primary:hover {
    background: linear-gradient(135deg, #1565C0, #0D47A1);
    color: #FFFFFF;
    box-shadow: 0 6px 20px rgba(25, 118, 210, 0.45);
    transform: translateY(-1px);
}

.btn--secondary {
    background: rgba(255, 255, 255, 0.15);
    color: #FFFFFF;
    border: 2px solid rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.btn--secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    color: #FFFFFF;
    border-color: rgba(255, 255, 255, 0.8);
}

/* =============================================
   SECTIONS
   ============================================= */
.section {
    padding: 60px 0;
}

.section--white {
    background: #FFFFFF;
}

.section--gray {
    background: #F8F9FA;
}

.section--accent {
    background: linear-gradient(135deg, #E8F4FD 0%, #D1ECFA 100%);
}

.section__title {
    font-size: 24px;
    font-weight: 600;
    color: #16213E;
    text-align: center;
    margin-bottom: 12px;
}

.section__subtitle {
    font-size: 16px;
    color: #555;
    text-align: center;
    max-width: 600px;
    margin: 0 auto 32px;
}

/* =============================================
   ABOUT / DIAGNOSIS GRID
   ============================================= */
.about__grid {
    display: flex;
    flex-direction: column-reverse;
    gap: 24px;
    align-items: center;
}

.about__grid--reverse {
    flex-direction: column-reverse;
}

.about__text p {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 12px;
}

.about__text p:last-child {
    margin-bottom: 0;
}

.about__image img {
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 440px;
}

/* =============================================
   REHABILITATION
   ============================================= */
.rehab__text {
    max-width: 700px;
    margin: 0 auto 32px;
    text-align: center;
}

.rehab__text p {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 12px;
}

/* Cost cards */
.cost-cards {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.cost-card {
    background: #FFFFFF;
    border: 1px solid #E0E0E0;
    border-radius: 12px;
    padding: 20px 28px;
    text-align: center;
    flex: 1;
    min-width: 200px;
    max-width: 300px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.cost-card__label {
    font-size: 14px;
    color: #666;
    margin-bottom: 6px;
}

.cost-card__value {
    font-size: 22px;
    font-weight: 700;
    color: #16213E;
}

/* Gallery */
.gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.gallery__item {
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s, box-shadow 0.2s;
}

.gallery__item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.14);
}

.gallery__item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.gallery__caption {
    display: block;
    padding: 8px 10px;
    font-size: 13px;
    font-style: italic;
    color: #555;
    background: #FAFAFA;
}

/* Video gallery */
.video-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}

.video-gallery__item {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    background: #000;
}

.video-gallery__item video {
    width: 100%;
    max-height: 400px;
    display: block;
    background: #F8F9FA;
}

.video-gallery__item .gallery__caption {
    background: #1A1A2E;
    color: rgba(255, 255, 255, 0.7);
}

/* =============================================
   DOCUMENTS
   ============================================= */
.docs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 16px;
}

.docs-card {
    border-radius: 10px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
    transition: transform 0.2s, box-shadow 0.2s;
    background: #FFFFFF;
}

.docs-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.14);
}

.docs-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.docs-card__label {
    display: block;
    padding: 10px 12px;
    font-size: 13px;
    font-weight: 500;
    color: #1A1A2E;
    text-align: center;
}

/* =============================================
   LIGHTBOX
   ============================================= */
.lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox__close {
    position: absolute;
    top: 16px;
    right: 20px;
    color: #FFFFFF;
    font-size: 36px;
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1;
    z-index: 2001;
    transition: opacity 0.2s;
}

.lightbox__close:hover {
    opacity: 0.7;
}

.lightbox__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: #FFFFFF;
    font-size: 48px;
    background: rgba(0, 0, 0, 0.4);
    border: none;
    cursor: pointer;
    line-height: 1;
    z-index: 2001;
    padding: 8px 16px;
    border-radius: 8px;
    transition: background 0.2s, opacity 0.2s;
}

.lightbox__nav:hover {
    background: rgba(0, 0, 0, 0.7);
}

.lightbox__nav--prev {
    left: 16px;
}

.lightbox__nav--next {
    right: 16px;
}

.lightbox__img {
    max-width: 80vw;
    max-height: 90vh;
    border-radius: 8px;
    object-fit: contain;
}

/* =============================================
   DONATE / CRYPTO
   ============================================= */
.crypto-cards {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 640px;
    margin: 0 auto 32px;
}

.crypto-card {
    background: #FFFFFF;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.crypto-card__header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.crypto-card__icon {
    flex-shrink: 0;
}

.crypto-card__name {
    font-size: 16px;
    font-weight: 600;
    color: #16213E;
}

.crypto-card__address-row {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #F8F9FA;
    border: 1px solid #E0E0E0;
    border-radius: 8px;
    padding: 10px 12px;
}

.crypto-card__address {
    font-family: 'Courier New', 'Consolas', monospace;
    font-size: 12px;
    color: #333;
    word-break: break-all;
    flex: 1;
    user-select: all;
    line-height: 1.4;
}

.crypto-card__copy {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border-radius: 6px;
    background: #2196F3;
    color: #FFFFFF;
    font-size: 13px;
    font-weight: 600;
    white-space: nowrap;
    transition: background 0.2s;
    flex-shrink: 0;
}

.crypto-card__copy:hover {
    background: #1976D2;
}

.crypto-card__copy.copied {
    background: #4CAF50;
}

.crypto-card__copy svg {
    flex-shrink: 0;
}

/* Share text */
.donate__share-text {
    text-align: center;
    font-size: 15px;
    color: #555;
    margin-bottom: 16px;
}

/* Share buttons */
.share-buttons {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.share-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    color: #FFFFFF;
    transition: opacity 0.2s, transform 0.2s;
}

.share-btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
    color: #FFFFFF;
}

.share-btn--twitter {
    background: #1A1A2E;
}

.share-btn--telegram {
    background: #0098EA;
}

.share-btn--whatsapp {
    background: #25D366;
}

.share-btn--link {
    background: #666;
    color: #FFFFFF;
}

.share-btn--link.copied {
    background: #4CAF50;
}

/* =============================================
   CONTACTS
   ============================================= */
.contacts-grid {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 28px 36px;
    background: #F8F9FA;
    border-radius: 12px;
    transition: transform 0.2s, box-shadow 0.2s;
    color: #1A1A2E;
    min-width: 180px;
}

.contact-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    color: #1A1A2E;
}

.contact-card__icon {
    flex-shrink: 0;
}

.contact-card__name {
    font-size: 16px;
    font-weight: 600;
}

.contact-card__handle {
    font-size: 14px;
    color: #2196F3;
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
    background: #16213E;
    color: rgba(255, 255, 255, 0.7);
    padding: 28px 0;
}

.footer__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
}

.footer__copy {
    font-size: 14px;
}

.footer__top {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

.footer__top:hover {
    color: #FFFFFF;
}

.footer__disclaimer {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.65);
    max-width: 500px;
}

/* =============================================
   RESPONSIVE: 480px+
   ============================================= */
@media (min-width: 480px) {
    .hero__title {
        font-size: 36px;
    }

    .hero__subtitle {
        font-size: 17px;
    }

    .section__title {
        font-size: 28px;
    }

    .crypto-card__address {
        font-size: 13px;
    }

    .gallery__item img {
        height: 240px;
    }
}

/* =============================================
   RESPONSIVE: 768px+
   ============================================= */
@media (min-width: 768px) {
    .header__nav {
        display: flex;
        align-items: center;
    }

    .header__burger {
        display: none;
    }

    .section {
        padding: 80px 0;
    }

    .hero__title {
        font-size: 44px;
    }

    .hero__subtitle {
        font-size: 18px;
    }

    .section__title {
        font-size: 32px;
        margin-bottom: 16px;
    }

    .about__grid {
        flex-direction: row;
        gap: 40px;
    }

    .about__grid--reverse {
        flex-direction: row-reverse;
    }

    .about__text {
        flex: 1;
    }

    .about__image {
        flex: 0 0 45%;
    }

    .about__text p {
        font-size: 17px;
    }

    .gallery__item img {
        height: 280px;
    }

    .docs-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .docs-card img {
        height: 220px;
    }

    .crypto-card__address {
        font-size: 14px;
    }

    .footer__inner {
        flex-direction: row;
        justify-content: space-between;
    }

    .footer__disclaimer {
        text-align: right;
    }
}

/* =============================================
   RESPONSIVE: 1024px+
   ============================================= */
@media (min-width: 1024px) {
    body {
        font-size: 18px;
    }

    .hero__title {
        font-size: 48px;
    }

    .section {
        padding: 100px 0;
    }

    .section__title {
        font-size: 36px;
    }

    .about__text p {
        font-size: 18px;
    }

    .gallery {
        grid-template-columns: repeat(4, 1fr);
    }

    .gallery__item img {
        height: 220px;
    }

    .docs-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* =============================================
   BODY SCROLL LOCK (when mobile menu or lightbox open)
   ============================================= */
body.no-scroll {
    overflow: hidden;
}