:root {
    --green: #237447;
    --green-dark: #185735;
    --green-light: #eaf5ed;
    --background: #f5f8f5;
    --text: #1d2b22;
    --muted: #69766d;
    --border: #e1e8e1;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--background);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.5;
}

.header {
    min-height: 76px;
    padding: 16px 7%;
    background: white;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--green-dark);
    text-decoration: none;
    font-weight: 800;
    font-size: 1.3rem;
}

.brand-icon {
    font-size: 1.8rem;
}

.status {
    color: var(--muted);
    font-size: 0.85rem;
}

.status span {
    display: inline-block;
    width: 9px;
    height: 9px;
    margin-right: 6px;
    background: #38a169;
    border-radius: 50%;
}

.container {
    width: min(760px, 92%);
    margin: 48px auto;
}

.welcome {
    text-align: center;
    margin-bottom: 28px;
}

.eyebrow {
    color: var(--green);
    font-size: 0.75rem;
    letter-spacing: 2px;
    font-weight: 700;
}

.welcome h1 {
    font-size: clamp(2rem, 5vw, 3.2rem);
    line-height: 1.15;
    margin: 12px 0;
    letter-spacing: -1.5px;
}

.welcome h1 span {
    color: var(--green);
}

.welcome>p:last-child {
    color: var(--muted);
    max-width: 520px;
    margin: 0 auto;
}

.chat-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 12px 36px rgba(27, 66, 40, 0.07);
}

.chat-heading {
    display: flex;
    gap: 12px;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

.avatar {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    border-radius: 14px;
    background: var(--green-light);
    font-size: 1.5rem;
}

.chat-heading h2 {
    margin: 0;
    font-size: 1.05rem;
}

.chat-heading p {
    margin: 3px 0 0;
    font-size: 0.8rem;
    color: var(--muted);
}

.messages {
    height: 340px;
    overflow-y: auto;
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.message {
    display: flex;
}

.message.user {
    justify-content: flex-end;
}

.bubble {
    max-width: 88%;
    padding: 12px 15px;
    border-radius: 15px;
    overflow-wrap: anywhere;
    white-space: pre-wrap;
    font-size: 0.94rem;
}

.bot .bubble {
    background: #f0f4f0;
    border-bottom-left-radius: 4px;
}

.user .bubble {
    background: var(--green);
    color: white;
    border-bottom-right-radius: 4px;
}

.meta {
    display: block;
    color: var(--muted);
    font-size: 0.75rem;
    margin-top: 8px;
}

.user .meta {
    color: #e1f3e6;
}

.suggestions {
    padding: 0 20px 18px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.suggestions form {
    margin: 0;
}

.suggestions button {
    background: white;
    color: var(--green-dark);
    border: 1px solid #cbded0;
    border-radius: 20px;
    padding: 8px 12px;
    cursor: pointer;
}

.suggestions button:hover {
    background: var(--green-light);
}

.input-area {
    margin: 0 20px;
    padding: 8px;
    border: 1px solid #d6e1d8;
    border-radius: 14px;
    display: flex;
    gap: 8px;
}

.input-area:focus-within {
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(35, 116, 71, 0.1);
}

.input-area input {
    flex: 1;
    min-width: 0;
    padding: 10px;
    font: inherit;
    border: 0;
    outline: 0;
}

.input-area button {
    border: 0;
    border-radius: 10px;
    background: var(--green);
    color: white;
    padding: 10px 18px;
    font-weight: 700;
    cursor: pointer;
}

.input-area button:hover {
    background: var(--green-dark);
}

.input-area button:disabled {
    opacity: 0.6;
    cursor: wait;
}

.disclaimer {
    padding: 0 20px 18px;
    margin: 12px 0 0;
    font-size: 0.76rem;
    color: var(--muted);
}

footer {
    text-align: center;
    color: var(--muted);
    margin-top: 24px;
    font-size: 0.8rem;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (max-width: 520px) {
    .header {
        padding: 14px 4%;
    }

    .status {
        font-size: 0.72rem;
    }

    .container {
        margin: 28px auto;
    }

    .messages {
        height: 380px;
        padding: 15px;
    }

    .input-area {
        margin: 0 12px;
    }

    .suggestions {
        padding-left: 12px;
        padding-right: 12px;
    }
}