/* ============================================
   Layout - Header, Footer, Grid
   ============================================ */

/* ---- Header ---- */
.site-header {
    background: linear-gradient(180deg, #ffffff 0%, #f8fcff 100%);
    box-shadow: 0 2px 16px rgba(79, 195, 247, 0.12);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    border-bottom: 3px solid transparent;
    border-image: linear-gradient(90deg, var(--color-primary-light), var(--color-accent-light), var(--color-secondary-light)) 1;
    transition: background-color var(--duration-normal), box-shadow var(--duration-normal), padding var(--duration-normal);
}

.site-header.header-scrolled {
    background: rgba(255, 255, 255, 0.97);
    box-shadow: 0 4px 20px rgba(79, 195, 247, 0.18);
    border-image: linear-gradient(90deg, var(--color-primary), var(--color-accent), var(--color-secondary)) 1;
}

.site-header.header-scrolled nav {
    padding-top: 4px;
    padding-bottom: 4px;
}

.site-header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
}

.logo {
    display: flex;
    align-items: center;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--color-dark);
    transition: transform var(--duration-normal);
}

.logo a:hover {
    transform: scale(1.04);
}

.logo-mark {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    transition: transform var(--duration-normal);
}

.logo-mark svg {
    filter: drop-shadow(0 2px 6px rgba(79, 195, 247, 0.3));
    transition: transform var(--duration-normal);
}

.logo a:hover .logo-mark svg {
    transform: rotate(-5deg) scale(1.05);
}

.logo-text-group {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.logo-main {
    font-family: var(--font-accent);
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 0.02em;
    display: flex;
    gap: 1px;
    -webkit-text-stroke: 0.6px currentColor;
    text-shadow: 0 1px 2px rgba(0,0,0,0.06);
}

.logo-main .lc {
    display: inline-block;
    transition: transform 0.3s ease;
}

.logo a:hover .lc {
    animation: logoWave 0.5s ease forwards;
}

.lc1 { color: #F4A460; }
.lc2 { color: #E88D8D; }
.lc3 { color: #6EC6C6; }
.lc4 { color: #8FBC8F; }
.lc5 { color: #7AB8D9; }

.logo a:hover .lc1 { animation-delay: 0s; }
.logo a:hover .lc2 { animation-delay: 0.05s; }
.logo a:hover .lc3 { animation-delay: 0.1s; }
.logo a:hover .lc4 { animation-delay: 0.15s; }
.logo a:hover .lc5 { animation-delay: 0.2s; }

@keyframes logoWave {
    0% { transform: translateY(0); }
    40% { transform: translateY(-4px); }
    100% { transform: translateY(0); }
}

.logo-sub {
    font-family: var(--font-accent);
    font-size: 0.65rem;
    color: var(--color-gray);
    letter-spacing: 0.15em;
    margin-top: 2px;
}

/* Scrolled header: compact logo */
.site-header.header-scrolled .logo-mark svg {
    width: 36px;
    height: 36px;
}

.site-header.header-scrolled .logo-main {
    font-size: 1.15rem;
}

.site-header.header-scrolled .logo-sub {
    font-size: 0.55rem;
}

/* ---- Trust Badge Strip ---- */
.trust-strip {
    background: linear-gradient(135deg, #f1f8e9 0%, #e8f5e9 100%);
    border-top: 1px solid #c8e6c9;
    border-bottom: 1px solid #c8e6c9;
    padding: var(--space-md) 0;
}

.trust-strip__inner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
}

.trust-strip__badge {
    height: 40px;
    width: auto;
}

.trust-strip__text {
    font-family: var(--font-accent);
    font-size: 1.05rem;
    color: #558b2f;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.nav-links {
    font-family: var(--font-heading);
    font-size: 1rem;
    list-style: none;
    display: flex;
    gap: 4px;
    align-items: center;
}

.nav-links > li {
    position: relative;
}

.nav-links a {
    text-decoration: none;
    color: #4a5568;
    font-weight: var(--weight-medium);
    transition: all 0.2s ease;
    position: relative;
    padding: 7px 16px;
    border-radius: 22px;
    font-size: 0.95rem;
}

.nav-links a:hover {
    color: var(--color-primary-dark);
    background: rgba(79, 195, 247, 0.12);
    transform: translateY(-1px);
}

.nav-links a.active {
    color: var(--color-white);
    background: linear-gradient(135deg, var(--color-primary), #29b6f6);
    box-shadow: 0 2px 8px rgba(79, 195, 247, 0.35);
}

/* Burger menu (mobile) */
.burger {
    display: none;
    cursor: pointer;
    background: none;
    border: none;
    padding: var(--space-sm);
}

.burger div {
    width: 25px;
    height: 3px;
    background: var(--color-dark);
    margin: 5px 0;
    transition: all var(--duration-normal);
}

.nav-close-wrap {
    display: none;
}

/* ---- Footer ---- */
.site-footer {
    background: linear-gradient(135deg, var(--color-footer-bg-start) 0%, var(--color-footer-bg-end) 100%);
    color: var(--color-white);
    padding: var(--space-2xl) 0 var(--space-md);
    margin-top: var(--space-4xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-xl);
    align-items: center;
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-title-row {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.footer-title-row h4 {
    color: var(--color-primary);
    font-family: var(--font-heading);
    font-size: var(--text-2xl);
    margin-bottom: 0;
}

.footer-cert-badge {
    display: inline-block;
    font-family: var(--font-accent);
    background: rgba(76, 175, 80, 0.15);
    color: #81c784;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 3px 12px;
    border-radius: 20px;
    border: 1px solid rgba(76, 175, 80, 0.3);
    white-space: nowrap;
}

.footer-info p {
    color: var(--color-footer-text);
    margin-bottom: var(--space-sm);
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-links a {
    color: #ecf0f1;
    text-decoration: none;
    font-weight: var(--weight-medium);
    padding: 0.8rem 1.2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-sm);
    transition: all var(--duration-normal);
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9rem;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--space-lg);
    color: var(--color-footer-muted);
    font-size: 0.85rem;
}

/* ---- Responsive: Burger Nav ---- */
@media (max-width: 1025px) {
    .burger {
        display: block;
    }

    .nav-links {
        position: fixed;
        right: 0;
        top: 0;
        height: 100vh;
        width: 320px;
        background: var(--color-white);
        flex-direction: column;
        justify-content: flex-start;
        transform: translateX(100%);
        transition: transform var(--duration-slow) ease-in;
        padding-top: var(--space-4xl);
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        gap: 0;
        z-index: 999;
    }

    .nav-links.nav-active {
        transform: translateX(0);
    }

    .nav-close-wrap {
        display: flex;
        justify-content: flex-end;
        padding: 0.5rem 1rem !important;
        border-bottom: none !important;
    }

    .nav-close-btn {
        background: none;
        border: none;
        font-size: 2rem;
        color: var(--color-dark);
        cursor: pointer;
        padding: 0.25rem 0.5rem;
        line-height: 1;
        transition: color var(--duration-normal);
    }

    .nav-close-btn:hover {
        color: var(--color-primary);
    }

    .nav-links li {
        padding: var(--space-md) var(--space-xl);
        border-bottom: 1px solid var(--color-border);
        width: 100%;
    }

    .nav-links li a {
        color: var(--color-dark);
        font-size: 1.2rem;
    }

    .burger.toggle .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .burger.toggle .line2 {
        opacity: 0;
    }

    .burger.toggle .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }
}

/* ---- Responsive: Footer & etc (768px) ---- */
@media (max-width: 768px) {

    .trust-strip__badge {
        height: 32px;
    }

    .trust-strip__text {
        font-size: 0.85rem;
    }

    .footer-title-row {
        justify-content: center;
    }

    .footer-cert-badge {
        font-size: 0.7rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        text-align: center;
    }

    .footer-links {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }

    .footer-links a {
        flex: 1;
        min-width: 120px;
        font-size: 0.8rem;
        padding: 0.6rem 0.8rem;
    }
}