:root {
    --green-950: #032e24;
    --green-900: #064e3b;
    --green-800: #065f46;
    --green-700: #047857;
    --green-600: #059669;
    --green-500: #10b981;

    --green-100: #d1fae5;
    --green-50: #ecfdf5;

    --white: #ffffff;
    --background: #f7faf9;

    --text: #10231d;
    --muted: #64746e;
    --border: #dfe9e5;

    --shadow:
        0 20px 50px rgba(3, 46, 36, 0.08);

    --radius: 18px;
}


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


body {
    font-family:
        Inter,
        ui-sans-serif,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    background: var(--background);
    color: var(--text);
    line-height: 1.6;
}


button,
textarea {
    font: inherit;
}


button {
    cursor: pointer;
}


/* NAVBAR */

.navbar {
    background: rgba(255, 255, 255, 0.95);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 20;
}


.nav-container {
    max-width: 1180px;
    margin: auto;

    padding:
        17px 24px;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}


.brand {
    display: flex;
    align-items: center;
    gap: 12px;

    text-decoration: none;
    color: var(--text);
}


.brand-mark {
    width: 38px;
    height: 38px;

    display: grid;
    place-items: center;

    background: var(--green-900);
    color: white;

    border-radius: 10px;

    font-weight: 800;
    font-size: 19px;
}


.brand strong {
    display: block;
    font-size: 15px;
}


.brand small {
    display: block;

    color: var(--muted);
    font-size: 11px;
    margin-top: -2px;
}


.nav-actions {
    display: flex;
    align-items: center;
    gap: 18px;
}


.connection-status {
    display: flex;
    align-items: center;
    gap: 7px;

    color: var(--muted);
    font-size: 13px;
}


.status-dot {
    width: 8px;
    height: 8px;

    border-radius: 50%;
    background: #f59e0b;
}


.status-dot.online {
    background: var(--green-500);
}


.status-dot.offline {
    background: #ef4444;
}


.about-btn {
    border: 1px solid var(--border);
    background: white;

    color: var(--text);

    padding: 8px 14px;
    border-radius: 9px;

    font-size: 13px;
}


.about-btn:hover {
    border-color: var(--green-500);
}


/* HERO */

.hero {
    padding:
        85px 24px
        55px;
}


.hero-content {
    max-width: 850px;
    margin: auto;
    text-align: center;
}


.eyebrow,
.section-label {
    color: var(--green-700);

    font-size: 11px;
    font-weight: 800;

    letter-spacing: 0.12em;
    text-transform: uppercase;
}


.hero h1 {
    margin-top: 16px;

    font-size: clamp(42px, 7vw, 70px);
    line-height: 1.04;

    letter-spacing: -0.045em;
}


.hero h1 span {
    display: block;
    color: var(--green-700);
}


.hero p {
    max-width: 690px;
    margin: 24px auto 0;

    color: var(--muted);
    font-size: 17px;
}


/* WORKSPACE */

.workspace {
    max-width: 1050px;
    margin: auto;

    padding:
        0 24px
        70px;
}


/* ASK CARD */

.ask-card {
    background: white;

    border: 1px solid var(--border);
    border-radius: var(--radius);

    padding: 30px;

    box-shadow: var(--shadow);
}


.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;

    margin-bottom: 22px;
}


.card-header h2,
.answer-header h2,
.section-heading h2 {
    margin-top: 4px;

    font-size: 23px;
    letter-spacing: -0.025em;
}


.ai-badge {
    display: inline-flex;
    align-items: center;

    background: var(--green-50);
    border: 1px solid var(--green-100);

    color: var(--green-800);

    padding: 5px 9px;
    border-radius: 7px;

    font-size: 9px;
    font-weight: 800;
    letter-spacing: 0.08em;
}


/* INPUT */

.input-wrapper {
    border: 1px solid var(--border);
    border-radius: 14px;

    overflow: hidden;

    transition:
        border-color 0.2s,
        box-shadow 0.2s;
}


.input-wrapper:focus-within {
    border-color: var(--green-500);

    box-shadow:
        0 0 0 3px
        rgba(16, 185, 129, 0.1);
}


textarea {
    width: 100%;

    border: 0;
    outline: none;

    resize: vertical;

    padding: 18px;

    background: white;
    color: var(--text);

    font-size: 15px;

    min-height: 130px;
}


textarea::placeholder {
    color: #9aa9a3;
}


.input-footer {
    padding:
        10px 12px;

    border-top: 1px solid var(--border);

    display: flex;
    align-items: center;
    justify-content: space-between;
}


#charCount {
    color: #899891;
    font-size: 12px;
}


.ask-btn {
    border: 0;

    background: var(--green-800);
    color: white;

    padding: 10px 17px;

    border-radius: 9px;

    font-weight: 700;
    font-size: 13px;

    display: flex;
    align-items: center;
    gap: 10px;

    transition:
        transform 0.2s,
        background 0.2s;
}


.ask-btn:hover {
    background: var(--green-900);
    transform: translateY(-1px);
}


.ask-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}


.arrow {
    font-size: 17px;
}


/* QUICK CHIPS */

.quick-section {
    margin-top: 24px;
}


.quick-section > span {
    display: block;

    color: var(--muted);

    font-size: 12px;
    margin-bottom: 10px;
}


.quick-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}


.quick-chip {
    border: 1px solid var(--border);

    background: white;

    color: #42544d;

    padding: 8px 11px;

    border-radius: 8px;

    font-size: 12px;

    transition:
        border-color 0.2s,
        background 0.2s;
}


.quick-chip:hover {
    border-color: var(--green-500);
    background: var(--green-50);
}


/* ANSWER */

.answer-section {
    margin-top: 45px;
}


.answer-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;

    margin-bottom: 15px;
}


.secondary-btn {
    border: 1px solid var(--border);

    background: white;

    padding: 9px 13px;

    border-radius: 8px;

    color: var(--text);

    font-size: 12px;
}


.secondary-btn:hover {
    border-color: var(--green-500);
}


.answer-card {
    background: white;

    border: 1px solid var(--border);

    border-radius: var(--radius);

    padding: 30px;

    box-shadow: var(--shadow);

    min-height: 180px;
}


.answer-meta {
    display: flex;
    align-items: center;
    gap: 10px;

    margin-bottom: 22px;
}


.research-label {
    color: var(--muted);
    font-size: 11px;
}


.answer-content {
    color: #253831;

    font-size: 15px;
    line-height: 1.8;

    white-space: pre-wrap;
}


.typing-indicator {
    display: flex;
    align-items: center;
    gap: 5px;

    color: var(--muted);

    margin-bottom: 15px;
}


.typing-indicator span {
    width: 6px;
    height: 6px;

    background: var(--green-500);

    border-radius: 50%;

    animation: pulse 1s infinite ease-in-out;
}


.typing-indicator span:nth-child(2) {
    animation-delay: 0.15s;
}


.typing-indicator span:nth-child(3) {
    animation-delay: 0.3s;
}


.typing-indicator p {
    margin-left: 7px;
    font-size: 12px;
}


@keyframes pulse {
    0%,
    100% {
        opacity: 0.3;
        transform: translateY(0);
    }

    50% {
        opacity: 1;
        transform: translateY(-2px);
    }
}


/* INFO GRID */

.info-grid {
    display: grid;

    grid-template-columns:
        repeat(3, 1fr);

    gap: 14px;

    margin-top: 45px;
}


.info-card {
    background: white;

    border: 1px solid var(--border);

    border-radius: 14px;

    padding: 21px;

    display: flex;
    gap: 14px;
}


.info-icon {
    width: 35px;
    height: 35px;

    flex-shrink: 0;

    display: grid;
    place-items: center;

    border-radius: 9px;

    background: var(--green-50);
    color: var(--green-700);

    font-size: 12px;
    font-weight: 800;
}


.info-card span {
    color: var(--muted);

    font-size: 10px;
    text-transform: uppercase;

    letter-spacing: 0.08em;
}


.info-card h3 {
    margin-top: 1px;
    font-size: 17px;
}


.info-card p {
    color: var(--muted);

    font-size: 12px;

    margin-top: 5px;
}


/* HOW IT WORKS */

.how-section {
    margin-top: 70px;
}


.steps {
    display: grid;

    grid-template-columns:
        repeat(3, 1fr);

    gap: 14px;

    margin-top: 20px;
}


.step {
    background: white;

    border: 1px solid var(--border);

    border-radius: 14px;

    padding: 24px;

    display: flex;
    gap: 16px;
}


.step-number {
    color: var(--green-600);

    font-size: 12px;
    font-weight: 800;
}


.step h3 {
    font-size: 15px;
}


.step p {
    color: var(--muted);

    font-size: 12px;

    margin-top: 5px;
}


/* DISCLAIMER */

.disclaimer {
    margin-top: 45px;

    padding: 18px 20px;

    background: var(--green-50);

    border: 1px solid var(--green-100);

    border-radius: 12px;

    color: #45645a;

    font-size: 12px;
}


.disclaimer strong {
    color: var(--green-900);
}


/* FOOTER */

footer {
    border-top: 1px solid var(--border);
    background: white;
}


.footer-container {
    max-width: 1050px;
    margin: auto;

    padding:
        22px 24px;

    display: flex;
    justify-content: space-between;

    color: var(--muted);

    font-size: 11px;
}


/* MODAL */

.modal {
    position: fixed;

    inset: 0;

    z-index: 100;

    display: grid;
    place-items: center;

    padding: 20px;
}


.modal-overlay {
    position: absolute;

    inset: 0;

    background: rgba(3, 46, 36, 0.45);
}


.modal-card {
    position: relative;

    z-index: 2;

    max-width: 520px;
    width: 100%;

    background: white;

    border-radius: 18px;

    padding: 32px;

    box-shadow:
        0 30px 80px
        rgba(0, 0, 0, 0.2);
}


.modal-card h2 {
    margin-top: 5px;

    font-size: 27px;
}


.modal-card > p {
    margin-top: 15px;

    color: var(--muted);

    font-size: 14px;
}


.close-modal {
    position: absolute;

    top: 15px;
    right: 17px;

    width: 32px;
    height: 32px;

    border: 0;

    background: var(--green-50);

    border-radius: 50%;

    font-size: 20px;

    color: var(--green-900);
}


.modal-stack {
    margin-top: 25px;

    display: grid;

    gap: 10px;
}


.modal-stack div {
    padding: 13px;

    background: var(--background);

    border-radius: 9px;
}


.modal-stack strong,
.modal-stack span {
    display: block;
}


.modal-stack strong {
    font-size: 13px;
}


.modal-stack span {
    color: var(--muted);

    font-size: 11px;
}


/* UTILITIES */

.hidden {
    display: none !important;
}


/* MOBILE */

@media (max-width: 760px) {

    .nav-container {
        padding: 14px 17px;
    }


    .connection-status {
        display: none;
    }


    .hero {
        padding:
            60px 18px
            40px;
    }


    .hero h1 {
        font-size: 43px;
    }


    .hero p {
        font-size: 15px;
    }


    .workspace {
        padding:
            0 15px
            50px;
    }


    .ask-card,
    .answer-card {
        padding: 20px;
    }


    .info-grid,
    .steps {
        grid-template-columns: 1fr;
    }


    .answer-header {
        align-items: flex-start;
        gap: 15px;
    }


    .answer-header h2 {
        font-size: 20px;
    }


    .footer-container {
        flex-direction: column;
        gap: 5px;
    }
}