/* ============================================
   Base Styles
   ============================================ */

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-white);
    background-image: url('../images/backgrounds/nature1.jpg');
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-position: center top;
    background-size: 100%;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-light);
}

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

/* Headings */
h1, h2, h3, h4, h5, h6 {
    color: var(--color-headings);
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
    margin: 0 0 15px;
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }
h4 { font-size: var(--font-size-h4); }

p {
    margin: 0 0 15px;
}

/* ============================================
   Header
   ============================================ */

.site-header {
    position: relative;
}

.header-top {
    background: var(--color-white);
    padding: 5px 0;
}

.header-top .container {
    display: flex;
    align-items: center;
}

.logo a {
    display: inline-block;
}

.logo img {
    max-height: 80px;
    margin: 5px;
}

/* ============================================
   Navigation
   ============================================ */

.main-nav {
    background-color: var(--color-menu-bg);
    position: relative;
    z-index: var(--z-nav);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.main-nav.sticky {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    box-shadow: var(--shadow-md);
}

.main-nav .container {
    display: flex;
    align-items: center;
}

.nav-logo {
    display: none;
    margin-right: 15px;
}

.nav-logo img {
    height: 35px;
}

.main-nav.sticky .nav-logo {
    display: block;
}

.nav-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
}

.nav-menu li {
    position: relative;
}

.nav-menu a {
    display: block;
    padding: 15px 18px;
    color: var(--color-white);
    font-size: 13px;
    font-weight: var(--font-weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background-color var(--transition-fast);
    white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a.active {
    background-color: rgba(255, 255, 255, 0.15);
    color: var(--color-white);
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 6px solid var(--color-white);
}

/* Hamburger Menu */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    margin-left: auto;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--color-white);
    margin: 4px 0;
    transition: var(--transition-normal);
    border-radius: 2px;
}

/* ============================================
   Page Headline
   ============================================ */

.page-headline {
    background: var(--color-white);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    padding: 20px 0;
}

.page-headline h1 {
    margin: 0;
    font-size: var(--font-size-h1);
}

/* ============================================
   Main Content
   ============================================ */

.site-content {
    min-height: 60vh;
}

.content-section {
    background: var(--color-bg);
    padding: var(--section-spacing) 0;
}

.content-section.alt-bg {
    background: var(--color-bg-alt);
}

.content-section.marble {
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

/* ============================================
   Footer
   ============================================ */

.site-footer {
    margin-top: auto;
}

.footer-main {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 30px 0;
}

.footer-main h3 {
    color: var(--color-white);
    font-size: 16px;
    margin-bottom: 15px;
}

.footer-main a {
    color: var(--color-white);
    opacity: 0.85;
}

.footer-main a:hover {
    opacity: 1;
}

.footer-logo {
    max-width: 200px;
    margin-bottom: 10px;
}

.footer-nav {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-nav li {
    margin-bottom: 5px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.social-icon {
    width: 32px;
    height: 32px;
}

.footer-bottom {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    padding: 12px 0;
    text-align: center;
    font-size: var(--font-size-small);
}

/* ============================================
   Back to Top
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    text-decoration: none;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: var(--z-back-to-top);
    box-shadow: var(--shadow-sm);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    color: var(--color-white);
}

/* ============================================
   Alert Messages
   ============================================ */

.alert {
    padding: 12px 20px;
    margin-bottom: 20px;
    border-radius: var(--border-radius);
    font-size: 14px;
}

.alert-success {
    background: #dff0d8;
    color: #3c763d;
    border: 1px solid #d6e9c6;
}

.alert-error {
    background: #f2dede;
    color: #a94442;
    border: 1px solid #ebccd1;
}

.alert-info {
    background: #d9edf7;
    color: #31708f;
    border: 1px solid #bce8f1;
}