:root {
    --ocean-primary: #2196F3;
    --ocean-primary-dark: #1976D2;
    --ocean-primary-light: #03A9F4;
    --ocean-secondary: #00BCD4;
    --ocean-text: #263238;
    --ocean-text-light: #546E7A;
    --ocean-text-lighter: #90A4AE;
    --ocean-bg: #F5F9FF;
    --ocean-white: #FFFFFF;
    --ocean-border: #E1F5FE;
    --ocean-shadow: rgba(33, 150, 243, 0.15);
    --ocean-shadow-dark: rgba(33, 150, 243, 0.25);
}


.ocean-header {
    background: var(--ocean-white);
    box-shadow: 0 2px 20px var(--ocean-shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--ocean-border);
}

.ocean-header.ocean-scrolled {
    box-shadow: 0 4px 30px var(--ocean-shadow-dark);
    background: rgba(255, 255, 255, 0.95);
}

.ocean-header.ocean-hidden {
    /* transform: translateY(-100%); */
}

.ocean-header-container {
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    overflow: hidden;
}


.ocean-wave-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    pointer-events: none;
    overflow: hidden;
}

.ocean-wave {
    position: absolute;
    width: 200%;
    height: 100%;
    background: var(--ocean-primary);
    opacity: 0.03;
    border-radius: 50%;
    animation: oceanWaveFloat 8s ease-in-out infinite;
}

.ocean-wave-1 {
    top: -50%;
    left: -20%;
    animation-delay: 0s;
}

.ocean-wave-2 {
    top: -30%;
    right: -30%;
    animation-delay: -2s;
    opacity: 0.02;
}

.ocean-wave-3 {
    bottom: -40%;
    left: -10%;
    animation-delay: -4s;
    opacity: 0.025;
}

@keyframes oceanWaveFloat {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}


.ocean-header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 75px;
    position: relative;
    z-index: 2;
}


.ocean-site-brand {
    flex-shrink: 0;
}

.ocean-site-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    text-decoration: none;
    color: var(--ocean-text);
    transition: all 0.3s ease;
}

.ocean-site-logo:hover {
    transform: translateY(-2px);
}

.ocean-logo-icon {
    position: relative;
    width: 50px;
    height: 50px;
    background: var(--ocean-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ocean-white);
    font-size: 24px;
    transition: all 0.3s ease;
    overflow: hidden;
}

.ocean-logo-icon:hover {
    background: var(--ocean-primary-dark);
    transform: scale(1.05);
}

.ocean-logo-ripple {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: oceanRipple 2s infinite;
}

@keyframes oceanRipple {
    0% {
        width: 0;
        height: 0;
        opacity: 1;
    }

    100% {
        width: 100px;
        height: 100px;
        opacity: 0;
    }
}

.ocean-brand-text {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.ocean-site-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--ocean-text);
    line-height: 1.2;
    margin: 0;
}

.ocean-site-subtitle {
    font-size: 13px;
    color: var(--ocean-text-light);
    line-height: 1.2;
    margin: 0;
}


.ocean-header-nav {
    flex: 1;
    display: flex;
    justify-content: center;
}

.ocean-nav-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--ocean-bg);
    padding: 8px;
    border-radius: 50px;
    border: 1px solid var(--ocean-border);
}

.ocean-nav-item2 {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    color: var(--ocean-text-light);
    text-decoration: none;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.ocean-nav-item2::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--ocean-primary);
    transition: left 0.3s ease;
    z-index: -1;
}

.ocean-nav-item2:hover::before,
.ocean-nav-item2.active::before {
    left: 0;
}

.ocean-nav-item2:hover,
.ocean-nav-item2.ocean-hover {
    color: var(--ocean-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--ocean-shadow);
}

.ocean-nav-item2.active {
    color: var(--ocean-white);
    background: var(--ocean-primary);
    box-shadow: 0 4px 15px var(--ocean-shadow);
}

.ocean-nav-icon2 {
    font-size: 16px;
    transition: transform 0.3s ease;
}

.ocean-nav-item2:hover .ocean-nav-icon2 {
    transform: scale(1.1);
}

.ocean-nav-text {
    font-weight: 600;
    position: relative;
    z-index: 1;
}

.ocean-nav-indicator {
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--ocean-primary);
    border-radius: 1px;
    transition: transform 0.3s ease;
}

.ocean-nav-item2.active .ocean-nav-indicator {
    transform: translateX(-50%) scaleX(1);
}


.ocean-header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.ocean-search-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 18px;
    background: var(--ocean-primary);
    color: var(--ocean-white);
    border: none;
    border-radius: 25px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--ocean-shadow);
}

.ocean-search-btn:hover {
    background: var(--ocean-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--ocean-shadow-dark);
}

.ocean-search-btn i {
    font-size: 16px;
}

.ocean-btn-text {
    font-weight: 600;
}


.ocean-mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: var(--ocean-bg);
    border: 1px solid var(--ocean-border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    gap: 4px;
}

.ocean-mobile-menu-btn:hover {
    background: var(--ocean-primary);
    border-color: var(--ocean-primary);
}

.ocean-mobile-menu-btn:hover .ocean-hamburger-line {
    background: var(--ocean-white);
}

.ocean-hamburger-line {
    width: 20px;
    height: 2px;
    background: var(--ocean-text-light);
    border-radius: 1px;
    transition: all 0.3s ease;
}

.ocean-mobile-menu-btn.ocean-active .ocean-hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.ocean-mobile-menu-btn.ocean-active .ocean-hamburger-line:nth-child(2) {
    opacity: 0;
}

.ocean-mobile-menu-btn.ocean-active .ocean-hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}


.ocean-mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9999;
    visibility: hidden;
    opacity: 0;
    transition: all 0.3s ease;
}

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

.ocean-mobile-nav-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    transition: opacity 0.3s ease;
}

.ocean-mobile-nav-panel {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 320px;
    max-width: 90vw;
    background: var(--ocean-white);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    display: flex;
    flex-direction: column;
    box-shadow: -5px 0 25px rgba(0, 0, 0, 0.1);
}

.ocean-mobile-nav.ocean-active .ocean-mobile-nav-panel {
    transform: translateX(0);
}


.ocean-mobile-nav-header {
    padding: 25px 20px;
    background: var(--ocean-primary);
    color: var(--ocean-white);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.ocean-mobile-nav-header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: oceanMobileWave 4s ease-in-out infinite;
}

@keyframes oceanMobileWave {

    0%,
    100% {
        transform: rotate(0deg);
    }

    50% {
        transform: rotate(180deg);
    }
}

.ocean-mobile-brand {
    display: flex;
    align-items: center;
    gap: 15px;
    position: relative;
    z-index: 2;
}

.ocean-mobile-logo {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ocean-white);
    font-size: 20px;
}

.ocean-mobile-brand-text {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.ocean-mobile-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--ocean-white);
    line-height: 1.2;
    margin: 0;
}

.ocean-mobile-subtitle {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.2;
    margin: 0;
}

.ocean-mobile-close-btn {
    width: 35px;
    height: 35px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 8px;
    color: var(--ocean-white);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 2;
}

.ocean-mobile-close-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg);
}

.ocean-mobile-close-btn i {
    font-size: 16px;
}


.ocean-mobile-nav-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.ocean-mobile-nav-list {
    padding: 20px 0;
}

.ocean-mobile-nav-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 18px 25px;
    color: var(--ocean-text);
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: 1px solid var(--ocean-border);
    position: relative;
    overflow: hidden;
}

.ocean-mobile-nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--ocean-bg);
    transition: left 0.3s ease;
}

.ocean-mobile-nav-item:hover::before {
    left: 0;
}

.ocean-mobile-nav-item:hover {
    color: var(--ocean-primary);
    transform: translateX(5px);
}

.ocean-mobile-nav-item.active {
    background: var(--ocean-primary);
    color: var(--ocean-white);
}

.ocean-mobile-nav-item.active::before {
    display: none;
}

.ocean-mobile-nav-icon {
    width: 45px;
    height: 45px;
    background: var(--ocean-bg);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ocean-primary);
    font-size: 18px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.ocean-mobile-nav-item:hover .ocean-mobile-nav-icon {
    background: var(--ocean-primary);
    color: var(--ocean-white);
    transform: scale(1.1);
}

.ocean-mobile-nav-item.active .ocean-mobile-nav-icon {
    background: rgba(255, 255, 255, 0.2);
    color: var(--ocean-white);
}

.ocean-mobile-nav-content-text {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 3px;
    position: relative;
    z-index: 2;
}

.ocean-mobile-nav-title {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.3;
}

.ocean-mobile-nav-desc {
    font-size: 12px;
    color: var(--ocean-text-light);
    line-height: 1.3;
}

.ocean-mobile-nav-item.active .ocean-mobile-nav-desc {
    color: rgba(255, 255, 255, 0.8);
}

.ocean-mobile-nav-arrow {
    color: var(--ocean-text-lighter);
    font-size: 14px;
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
}

.ocean-mobile-nav-item:hover .ocean-mobile-nav-arrow {
    color: var(--ocean-primary);
    transform: translateX(3px);
}

.ocean-mobile-nav-item.active .ocean-mobile-nav-arrow {
    color: var(--ocean-white);
}


.ocean-mobile-nav-footer {
    padding: 25px;
    background: var(--ocean-bg);
    border-top: 1px solid var(--ocean-border);
}

.ocean-mobile-search {
    margin-bottom: 20px;
}

.ocean-mobile-search-box {
    position: relative;
    display: flex;
    align-items: center;
}

.ocean-mobile-search-box i {
    position: absolute;
    left: 15px;
    color: var(--ocean-text-light);
    font-size: 16px;
    z-index: 2;
}

.ocean-mobile-search-input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 1px solid var(--ocean-border);
    border-radius: 25px;
    font-size: 14px;
    background: var(--ocean-white);
    color: var(--ocean-text);
    transition: all 0.3s ease;
}

.ocean-mobile-search-input:focus {
    outline: none;
    border-color: var(--ocean-primary);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

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

.ocean-mobile-copyright {
    font-size: 12px;
    color: var(--ocean-text-light);
    margin: 0 0 5px 0;
}

.ocean-mobile-slogan {
    font-size: 11px;
    color: var(--ocean-text-lighter);
    margin: 0;
    font-style: italic;
}


.ocean-search-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    visibility: hidden;
    opacity: 0;
    transition: all 0.3s ease;
}

.ocean-search-modal.ocean-active {
    visibility: visible;
    opacity: 1;
}

.ocean-search-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
}

.ocean-search-modal-content {
    position: relative;
    background: var(--ocean-white);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow: hidden;
    transform: scale(0.8);
    transition: transform 0.3s ease;
}

.ocean-search-modal.ocean-active .ocean-search-modal-content {
    transform: scale(1);
}

.ocean-search-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 25px 30px;
    border-bottom: 1px solid var(--ocean-border);
    background: var(--ocean-bg);
}

.ocean-search-modal-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: var(--ocean-text);
    margin: 0;
}

.ocean-search-modal-title i {
    color: var(--ocean-primary);
    font-size: 20px;
}

.ocean-search-modal-close {
    width: 35px;
    height: 35px;
    border: none;
    background: var(--ocean-border);
    border-radius: 8px;
    color: var(--ocean-text-light);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ocean-search-modal-close:hover {
    background: var(--ocean-primary);
    color: var(--ocean-white);
    transform: rotate(90deg);
}

.ocean-search-modal-body {
    padding: 30px;
}

.ocean-search-form {
    margin-bottom: 30px;
}

.ocean-search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--ocean-bg);
    border: 2px solid var(--ocean-border);
    border-radius: 50px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.ocean-search-input-wrapper:focus-within {
    border-color: var(--ocean-primary);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.ocean-search-input-icon {
    position: absolute;
    left: 20px;
    color: var(--ocean-text-light);
    font-size: 18px;
    z-index: 2;
}

.ocean-search-input {
    flex: 1;
    padding: 18px 20px 18px 55px;
    border: none;
    background: transparent;
    font-size: 16px;
    color: var(--ocean-text);
    outline: none;
}

.ocean-search-input::placeholder {
    color: var(--ocean-text-lighter);
}

.ocean-search-submit {
    padding: 18px 25px;
    background: var(--ocean-primary);
    color: var(--ocean-white);
    border: none;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.ocean-search-submit:hover {
    background: var(--ocean-primary-dark);
}

.ocean-search-suggestions {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.ocean-search-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--ocean-text-light);
    margin: 0 0 12px 0;
}

.ocean-search-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.ocean-search-tag {
    padding: 8px 16px;
    background: var(--ocean-bg);
    color: var(--ocean-text-light);
    border: 1px solid var(--ocean-border);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.ocean-search-tag:hover {
    background: var(--ocean-primary);
    color: var(--ocean-white);
    border-color: var(--ocean-primary);
    transform: translateY(-1px);
}


@media (max-width: 1024px) {
    .ocean-header-container {
        padding: 0 15px;
    }

    .ocean-header-content {
        height: 70px;
    }

    .ocean-nav-wrapper {
        gap: 4px;
    }

    .ocean-nav-item2 {
        padding: 10px 16px;
        font-size: 13px;
    }

    .ocean-search-btn {
        padding: 10px 16px;
        font-size: 13px;
    }
}

@media (max-width: 768px) {
    .ocean-header-container {
        padding: 0 15px;
    }

    .ocean-header-content {
        height: 65px;
    }

    .ocean-logo-icon {
        width: 45px;
        height: 45px;
        font-size: 20px;
    }

    .ocean-site-title {
        font-size: 20px;
    }

    .ocean-site-subtitle {
        font-size: 12px;
    }

    .ocean-header-nav {
        display: none;
    }

    .ocean-search-btn {
        display: none;
    }

    .ocean-mobile-menu-btn {
        display: flex;
    }
}

@media (max-width: 480px) {
    .ocean-header-container {
        padding: 0 10px;
    }

    .ocean-header-content {
        height: 60px;
    }

    .ocean-logo-icon {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    .ocean-site-title {
        font-size: 18px;
    }

    .ocean-site-subtitle {
        font-size: 11px;
    }

    .ocean-mobile-nav-panel {
        width: 100%;
    }

    .ocean-search-modal-content {
        width: 95%;
        margin: 20px;
    }

    .ocean-search-modal-header {
        padding: 20px 25px;
    }

    .ocean-search-modal-body {
        padding: 25px;
    }

    .ocean-search-input-wrapper {
        flex-direction: column;
        border-radius: 15px;
    }

    .ocean-search-input {
        padding: 15px 20px;
        text-align: center;
    }

    .ocean-search-input-icon {
        display: none;
    }

    .ocean-search-submit {
        width: 100%;
        border-radius: 0 0 13px 13px;
    }
}


@media (max-width: 320px) {
    .ocean-header-container {
        padding: 0 8px;
    }

    .ocean-header-content {
        height: 55px;
        gap: 8px;
    }

    .ocean-logo-icon {
        width: 35px;
        height: 35px;
        font-size: 16px;
        border-radius: 8px;
    }

    .ocean-site-title {
        font-size: 16px;
    }

    .ocean-site-subtitle {
        font-size: 10px;
    }

    .ocean-mobile-menu-btn {
        width: 35px;
        height: 35px;
    }

    .ocean-hamburger-line {
        width: 16px;
    }
}


@media (prefers-color-scheme: dark) {
    :root {
        --ocean-text: #E3F2FD;
        --ocean-text-light: #B3E5FC;
        --ocean-text-lighter: #81D4FA;
        --ocean-bg: #0D47A1;
        --ocean-white: #1565C0;
        --ocean-border: #1976D2;
    }
}


@media (prefers-contrast: high) {
    .ocean-header {
        border-bottom: 2px solid var(--ocean-primary);
    }

    .ocean-nav-item2,
    .ocean-search-btn,
    .ocean-mobile-nav-item {
        border: 2px solid currentColor;
    }
}


@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .ocean-wave {
        display: none;
    }
}


@media print {
    .ocean-header {
        position: static;
        box-shadow: none;
        border-bottom: 2px solid #000;
    }

    .ocean-wave-decoration,
    .ocean-header-actions,
    .ocean-mobile-menu-btn,
    .ocean-mobile-nav,
    .ocean-search-modal {
        display: none !important;
    }

    .ocean-header-content {
        height: auto;
        padding: 10px 0;
    }

    .ocean-site-title {
        color: #000 !important;
    }
}