@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

:root {
    --primary-bg: #1a1a2e;
    --secondary-bg: #16213e;
    --sidebar-bg: #0f3460;
    --text-primary: #e94560;
    --text-secondary: #ffffff;
    --accent-color: #53bf9d;
    --border-color: #16213e;
    --font-family: 'Poppins', sans-serif;
}

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

body, html {
    height: 100%;
    font-family: var(--font-family);
    background-color: var(--primary-bg);
    color: var(--text-secondary);
}

.app-container {
    display: flex;
    height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: 240px;
    background-color: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    padding: 1rem;
    color: var(--text-secondary);
}

.sidebar-header {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.sidebar-nav {
    margin-top: 2rem;
    flex-grow: 1;
}

.nav-link {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    transition: background-color 0.3s, color 0.3s;
}

.nav-link i {
    margin-right: 10px;
}

.nav-link:hover, .nav-link.active {
    background-color: var(--accent-color);
    color: var(--primary-bg);
}

.nav-epi {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    transition: background-color 0.3s, color 0.3s;
}

.nav-epi i {
    margin-right: 10px;
}

.nav-epi:hover, .nav-epi.active {
    background-color: var(--accent-color);
    color: var(--primary-bg);
}

.sidebar-footer {
    text-align: center;
    font-size: 0.8rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* --- Main Content --- */
.main-content {
    flex-grow: 1;
    height: 100vh;
    overflow-y: auto;
    background-color: var(--primary-bg);
}

.tab-content {
    display: none;
    padding: 2rem;
    height: 100%;
}

.tab-content.active {
    display: block;
}

/* --- Chat Interface --- */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--secondary-bg);
    border-radius: 10px;
}

.chat-header {
    padding: 1rem;
    background-color: var(--border-color);
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    border-radius: 10px 10px 0 0;
}

.chat-header h2 {
    color: var(--text-primary);
}

.chat-messages {
    flex-grow: 1;
    padding: 1rem;
    overflow-y: auto;
}

.message {
    margin-bottom: 1rem;
    display: flex;
    max-width: 70%;
}

.message-content {
    padding: 0.8rem 1rem;
    border-radius: 18px;
    line-height: 1.5;
}

.sent {
    margin-left: auto;
    flex-direction: row-reverse;
}

.sent .message-content {
    background-color: var(--accent-color);
    color: var(--primary-bg);
    border-bottom-right-radius: 4px;
}

.received .message-content {
    background-color: var(--sidebar-bg);
    color: var(--text-secondary);
    border-bottom-left-radius: 4px;
}

.chat-input-area {
    display: flex;
    padding: 1rem;
    background-color: var(--border-color);
    border-radius: 0 0 10px 10px;
}

#user-input {
    flex-grow: 1;
    padding: 0.8rem;
    border: none;
    border-radius: 20px;
    background-color: var(--primary-bg);
    color: var(--text-secondary);
    outline: none;
}

#send-btn {
    background-color: var(--accent-color);
    border: none;
    color: var(--primary-bg);
    padding: 0.8rem 1.2rem;
    border-radius: 20px;
    margin-left: 0.5rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

#send-btn:hover {
    background-color: #45a08a;
}

/* --- Education Tab --- */
.education-container {
    text-align: center;
}

.education-header h1 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.search-form {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
}

#search-input {
    width: 50%;
    padding: 0.8rem;
    border-radius: 20px 0 0 20px;
    border: 1px solid var(--border-color);
    background-color: var(--secondary-bg);
    color: var(--text-secondary);
    outline: none;
}

#search-form button {
    padding: 0.8rem 1.5rem;
    border: none;
    background-color: var(--accent-color);
    color: var(--primary-bg);
    border-radius: 0 20px 20px 0;
    cursor: pointer;
}

.search-results {
    margin-top: 2rem;
    text-align: left;
    background-color: var(--secondary-bg);
    padding: 2rem;
    border-radius: 10px;
}
.search-results h2 {
    color: var(--text-primary);
    margin-bottom: 1rem;
}
.search-results p {
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* --- Popup --- */
.popup-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.popup-content {
    background: var(--secondary-bg);
    padding: 2rem;
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
    text-align: center;
}
.popup-content h1 {
    color: var(--text-primary);
}
.popup-content p {
    margin: 1rem 0;
}
.form-group {
    margin: 1.5rem 0;
}
#suburb-dropdown {
    width: 100%;
    padding: 0.8rem;
    border-radius: 5px;
    border: 1px solid var(--border-color);
    background: var(--primary-bg);
    color: var(--text-secondary);
}
.btn {
    background-color: var(--accent-color);
    color: var(--primary-bg);
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    width: 100%;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
        flex-direction: row;
        justify-content: space-around;
        padding: 0.5rem;
    }
    .sidebar-header, .sidebar-footer {
        display: none;
    }
    .sidebar-nav {
        display: flex;
        margin-top: 0;
    }
    .nav-link {
        padding: 0.8rem;
        margin-bottom: 0;
    }
    .main-content {
        height: calc(100vh - 60px); /* Adjust based on sidebar height */
    }
    .tab-content {
        padding: 1rem;
    }
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--primary-bg);
}
::-webkit-scrollbar-thumb {
    background: var(--accent-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #45a08a;
}