:root {
    --color-primary: #273b69;
    --color-secondary: #1ebbef;
    --color-dark: #161b3d;
    --color-light: #ffffff;
    --color-gray: #e3e5eb;
    --color-text: #212326;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Plus Jakarta Sans', Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-light);
}

a {
    text-decoration: none;
    color: inherit;
}

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

/* Header */
.header {
    background-color: var(--color-primary);
    padding: 0;
}

.header-container {
    max-width: 1248px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    max-width: 200px;
    height: auto;
}

.main-nav > ul {
    display: flex;
    list-style: none;
    gap: 30px;
}

.main-nav a {
    color: var(--color-light);
    font-size: 15px;
    font-weight: 500;
    padding: 8px 0;
    transition: color 0.3s ease;
    position: relative;
}

.main-nav a:hover {
    color: var(--color-secondary);
}

.main-nav a.login-btn {
    background-color: var(--color-secondary);
    color: var(--color-dark);
    padding: 10px 24px;
    border-radius: 4px;
    font-weight: 600;
    position: relative;
    top: 16px;
}

.main-nav a.login-btn:hover {
    background-color: #fff;
    color: var(--color-dark);
}

/* Dropdown Menu */
.main-nav .has-submenu {
    position: relative;
}

.main-nav .has-submenu > a {
    padding: 15px 0;
    display: inline-block;
}

.main-nav .has-submenu > a::after {
    content: ' ▾';
    font-size: 10px;
    margin-left: 4px;
}

.main-nav .submenu {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    top: 100%;
    left: -10px;
    background-color: var(--color-secondary);
    min-width: 180px;
    padding: 0;
    border-radius: 0 0 4px 4px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 1000;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    display: flex;
    flex-direction: column;
    gap: 0;
}

.main-nav .has-submenu:hover .submenu,
.main-nav .has-submenu:focus-within .submenu {
    visibility: visible;
    opacity: 1;
}

.main-nav .submenu li {
    list-style: none;
    display: block;
    width: 100%;
    border-bottom: 1px solid rgba(255,255,255,0.5);
    margin: 0;
    padding: 0;
}

.main-nav .submenu li:last-child {
    border-bottom: none;
}

.main-nav .submenu a {
    display: block;
    padding: 6px 20px;
    color: var(--color-dark);
    font-size: 14px;
    font-weight: 500;
    white-space: nowrap;
    transition: background-color 0.2s ease;
}

.main-nav .submenu a:hover {
    background-color: #a3e3ff;
    color: var(--color-dark);
}

/* Hero Section */
.hero {
    background-color: var(--color-primary);
    padding: 50px 0 30px;
}

.hero-container {
    max-width: 1248px;
    margin: 0 auto;
    padding: 0 24px;
}

.hero h1 {
    color: var(--color-light);
    font-size: 42px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 10px;
}

/* Main Content */
.main-content {
    padding: 30px 0 90px;
}

.content-container {
    max-width: 1248px;
    margin: 0 auto;
    padding: 0 24px;
}

.featured-image {
    margin-bottom: 60px;
    border-radius: 10px 10px 100px 10px;
    overflow: hidden;
    position: relative;
}

.featured-image img {
    width: 100%;
    display: block;
}

.featured-image .image-overlay-text {
    position: absolute;
    top: 20px;
    left: 20px;
    color: var(--color-light);
    font-size: 32px;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.content-text {
    max-width: 75%;
}

.content-text p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 20px;
    color: var(--color-text);
}

.content-text ul {
    margin: 20px 0 20px 20px;
}

.content-text li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.content-text h2 {
    font-size: 24px;
    color: var(--color-primary);
    margin: 40px 0 15px;
}

/* Login Form */
.login-form {
    max-width: 350px;
    margin: 20px 0 30px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 6px;
}

.form-group input {
    width: 100%;
    padding: 10px 14px;
    font-size: 15px;
    font-family: inherit;
    border: 2px solid var(--color-gray);
    border-radius: 5px;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--color-secondary);
}

.login-btn-submit {
    padding: 12px 30px;
    font-size: 15px;
    font-weight: 600;
    font-family: inherit;
    background-color: var(--color-secondary);
    color: var(--color-dark);
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.login-btn-submit:hover {
    background-color: var(--color-primary);
    color: var(--color-light);
}

/* Footer */
.footer {
    background-color: var(--color-dark);
    background-image: url('../images/footer-bg-2560.jpg');
    background-size: 100% auto;
    background-position: center bottom;
    background-repeat: no-repeat;
    padding: 50px 0 285px;
}

.footer-container {
    max-width: 1248px;
    margin: 0 auto;
    padding: 0 24px;
}

.footer-logo {
    text-align: center;
    margin-bottom: 30px;
}

.footer-logo img {
    max-width: 315px;
}

.footer-divider {
    height: 2px;
    background-color: #415778;
    margin-bottom: 45px;
}

.footer-content {
    display: flex;
    gap: 60px;
    flex-wrap: wrap;
    justify-content: space-between;
}

.footer-column {
    flex: 1;
    min-width: 250px;
}

.footer-column h4 {
    color: var(--color-secondary);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.footer-column p {
    color: var(--color-light);
    font-size: 14px;
}

.funding-images {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.funding-images img {
    max-width: 200px;
}

.funding-images img.swiss {
    max-width: 350px;
}

.hydro-logo {
    max-width: 115px;
    margin-top: 15px;
}

.footer-column.align-center {
    text-align: left;
    margin-left: 120px;
}

.footer-column.align-right {
    text-align: right;
    margin-right: 30px;
}

.mt-30 {
    margin-top: 30px;
}

.citydrain-logo {
    max-width: 75px;
    margin-top: 15px;
}

/* Dashboard Layout (Logged-in view) */
.dashboard-layout {
    display: flex;
    gap: 40px;
}

.dashboard-sidebar {
    flex: 0 0 200px;
}

.dashboard-sidebar h3 {
    color: var(--color-primary);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.dashboard-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.dashboard-links li {
    margin-bottom: 8px;
}

.dashboard-links a {
    display: block;
    padding: 12px 16px;
    background-color: var(--color-primary);
    color: var(--color-light);
    border-radius: 5px;
    font-weight: 500;
    transition: background-color 0.3s ease;
}

.dashboard-links a:hover {
    background-color: var(--color-secondary);
    color: var(--color-dark);
}

.dashboard-main {
    flex: 1;
    position: relative;
}

.dashboard-image {
    float: right;
    width: 25%;
    margin: 0 0 20px 30px;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

.dashboard-image img {
    width: 100%;
    display: block;
}

.dashboard-image .image-overlay-text {
    position: absolute;
    top: 10px;
    left: 10px;
    color: var(--color-light);
    font-size: 14px;
    font-weight: 700;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.5);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 32px;
    }
    
    .content-text {
        max-width: 100%;
    }
    
    .footer {
        padding-bottom: 145px;
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 20px;
    }
    
    .main-nav ul {
        gap: 20px;
    }
    
    .hero h1 {
        font-size: 26px;
    }
    
    .hero {
        padding: 24px 0;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer {
        padding-bottom: 55px;
    }
    
    .dashboard-layout {
        flex-direction: column;
    }
    
    .dashboard-sidebar {
        flex: none;
        width: 100%;
    }
    
    .dashboard-image {
        float: none;
        width: 50%;
        margin: 0 auto 20px;
    }
}