@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@600;700;800&display=swap');

:root {
    --ink: #17211f;
    --muted: #68736f;
    --paper: #f4f5f0;
    --line: #dfe4dd;
    --teal: #087f72;
    --teal-dark: #07584f;
    --teal-soft: #e4f2ee;
    --shadow: 0 18px 50px rgba(23, 33, 31, .09);
}

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

body {
    min-height: 100vh;
    background: var(--paper);
    color: var(--ink);
    font-family: "DM Sans", sans-serif;
    overflow-x: hidden;
}

body::before {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: radial-gradient(circle at 85% 0%, #e1eee7 0, transparent 30%), linear-gradient(115deg, #f5f6f1, #eef3ee 60%, #f8f7f2);
    content: "";
}

.app-container {
    width: min(1100px, calc(100% - 48px));
    margin: auto;
    padding: 28px 0 10px;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--line);
    padding-bottom: 22px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: var(--ink);
    font: 800 1.25rem "Manrope", sans-serif;
    text-decoration: none;
    letter-spacing: -.03em;
}

.brand-mark {
    display: grid;
    width: 30px;
    height: 30px;
    place-items: center;
    border-radius: 9px;
    background: var(--teal);
    color: #fff;
    font-size: 1.1rem;
}

.header-meta {
    color: var(--muted);
    font-size: .82rem;
}

.header-meta .status-dot {
    display: inline-block;
    margin-right: 7px;
}

.status-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #39a57d;
    box-shadow: 0 0 0 4px #d8eee5;
}

.hero-section {
    max-width: 790px;
    padding: 92px 0 60px;
}

.eyebrow {
    color: var(--teal);
    font-size: .7rem;
    font-weight: 800;
    letter-spacing: .16em;
}

.hero-section h1 {
    max-width: 720px;
    margin: 15px 0 18px;
    font: 800 clamp(2.2rem, 4.5vw, 3.5rem)/1.04 "Manrope", sans-serif;
    letter-spacing: -.065em;
}

.hero-section h1 em {
    color: var(--teal);
    font-style: normal;
}

.hero-copy {
    max-width: 590px;
    color: var(--muted);
    font-size: 1.1rem;
    line-height: 1.7;
}

.planner-card,
.result-section {
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255, 255, 255, .8);
    box-shadow: var(--shadow);
}

.planner-card {
    padding: 32px;
}

.card-header,
.result-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 24px;
}

.card-header h2,
.result-header h2 {
    margin: 7px 0 8px;
    font: 700 1.45rem "Manrope", sans-serif;
    letter-spacing: -.03em;
}

.card-header p:not(.eyebrow),
.result-header p:not(.eyebrow) {
    color: var(--muted);
    line-height: 1.55;
}

.shortcut {
    color: var(--muted);
    font-size: .76rem;
    white-space: nowrap;
}

kbd {
    padding: 3px 6px;
    border: 1px solid var(--line);
    border-radius: 5px;
    background: #f8faf7;
    font-size: .7rem;
}

.input-area {
    display: grid;
    grid-template-columns: 1fr 190px;
    gap: 14px;
}

textarea {
    width: 100%;
    min-height: 158px;
    resize: vertical;
    border: 1px solid #cfd8d1;
    border-radius: 12px;
    outline: none;
    background: #fcfdfb;
    color: var(--ink);
    padding: 18px;
    font: 1rem/1.65 "DM Sans", sans-serif;
    transition: border-color .2s, box-shadow .2s;
}

textarea:focus {
    border-color: var(--teal);
    box-shadow: 0 0 0 4px rgba(8, 127, 114, .13);
}

textarea::placeholder {
    color: #99a39e;
}

#sendBtn {
    min-height: 56px;
    align-self: end;
    border: 0;
    border-radius: 11px;
    background: var(--teal);
    color: #fff;
    cursor: pointer;
    font-weight: 700;
    box-shadow: 0 10px 20px rgba(8, 127, 114, .2);
    transition: background .2s, transform .2s;
}

#sendBtn:hover {
    background: var(--teal-dark);
    transform: translateY(-1px);
}

#sendBtn:focus-visible,
button:focus-visible {
    outline: 3px solid #f0a66c;
    outline-offset: 3px;
}

#sendBtn:disabled {
    cursor: wait;
    opacity: .8;
    transform: none;
}

.loading-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: .84rem;
}

.loader {
    width: 15px;
    height: 15px;
    border: 2px solid rgba(255, 255, 255, .4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin .8s linear infinite;
}

.input-hint {
    margin-top: 11px;
    color: var(--muted);
    font-size: .78rem;
}

.quick-prompts {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 22px;
}

.prompt-label {
    margin-right: 3px;
    color: var(--muted);
    font-size: .78rem;
}

.quick-prompts button,
.copy-btn,
.download-btn {
    border-radius: 8px;
    cursor: pointer;
    font: 600 .8rem "DM Sans", sans-serif;
    transition: .2s ease;
}

.quick-prompts button {
    border: 1px solid var(--line);
    background: #f8faf7;
    color: var(--ink);
    padding: 9px 12px;
}

.quick-prompts button:hover {
    border-color: var(--teal);
    color: var(--teal-dark);
    background: var(--teal-soft);
}

.result-section {
    margin-top: 26px;
    padding: 32px;
}

.result-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.copy-btn,
.download-btn {
    padding: 10px 13px;
}

.copy-btn {
    border: 1px solid var(--line);
    background: #fff;
    color: var(--ink);
}

.copy-btn:hover,
.copy-btn.is-success {
    border-color: var(--teal);
    color: var(--teal-dark);
    background: var(--teal-soft);
}

.download-btn {
    border: 1px solid var(--teal);
    background: var(--teal);
    color: #fff;
}

.download-btn:hover {
    background: var(--teal-dark);
}

.download-btn:disabled {
    cursor: wait;
    opacity: .7;
}

.pdf-content {
    padding: 30px;
    border-radius: 12px;
    background: #fff;
}

.pdf-title {
    display: none;
}

.result-box {
    color: #35413d;
    line-height: 1.7;
}

.draft-notice {
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 18px;
    padding: 14px 16px;
    border-left: 4px solid #d28a3e;
    border-radius: 9px;
    background: #fff5e7;
    color: #704617;
    font-size: .86rem;
}

.draft-notice span {
    color: #8a6745;
}

.review-context {
    display: grid;
    gap: 8px;
    margin-bottom: 18px;
    padding: 14px 16px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: #f8faf7;
    color: var(--muted);
    font-size: .82rem;
    line-height: 1.5;
}

#constraintSummary {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 14px;
}

#constraintWarnings {
    color: #825323;
}

.approval-panel {
    margin-top: 24px;
    padding: 24px;
    border: 1px solid #b9ddd3;
    border-radius: 12px;
    background: var(--teal-soft);
}

.approval-panel h3 {
    margin: 7px 0 6px;
    font: 700 1.25rem "Manrope", sans-serif;
}

.approval-panel p:not(.eyebrow) {
    color: var(--muted);
    line-height: 1.5;
}

.approval-panel label {
    display: block;
    margin-top: 18px;
    margin-bottom: 7px;
    font-size: .82rem;
    font-weight: 700;
}

.approval-panel label span {
    color: var(--muted);
    font-weight: 400;
}

.approval-panel textarea {
    min-height: 92px;
    background: rgba(255, 255, 255, .8);
}

.approval-actions {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

.approval-actions button {
    border-radius: 8px;
    cursor: pointer;
    padding: 11px 15px;
    font: 700 .82rem "DM Sans", sans-serif;
}

.changes-btn {
    border: 1px solid #c5d2cc;
    background: #fff;
    color: var(--ink);
}

.approve-btn {
    border: 1px solid var(--teal);
    background: var(--teal);
    color: #fff;
}

.changes-btn:hover,
.approve-btn:hover {
    transform: translateY(-1px);
}

.changes-btn:disabled,
.approve-btn:disabled {
    cursor: wait;
    opacity: .65;
    transform: none;
}

.result-box h1,
.result-box h2,
.result-box h3 {
    color: var(--ink);
    font-family: "Manrope", sans-serif;
    line-height: 1.25;
}

.result-box h1 {
    margin: 0 0 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--teal);
    font-size: 1.8rem;
}

.result-box h2 {
    margin: 28px 0 12px;
    padding: 10px 13px;
    border-left: 4px solid var(--teal);
    background: var(--teal-soft);
    font-size: 1.25rem;
}

.result-box h3 {
    margin: 20px 0 7px;
    color: var(--teal-dark);
    font-size: 1rem;
}

.result-box p {
    margin-bottom: 13px;
}

.result-box ul,
.result-box ol {
    margin: 10px 0 18px 24px;
}

.result-box li {
    margin-bottom: 7px;
}

.result-box strong {
    color: var(--ink);
}

.result-box hr {
    margin: 24px 0;
    border: 0;
    border-top: 1px solid var(--line);
}

.result-box table {
    width: 100%;
    margin: 16px 0;
    border-collapse: collapse;
    font-size: .9rem;
}

.result-box th,
.result-box td {
    border: 1px solid var(--line);
    padding: 10px;
    text-align: left;
}

.result-box th {
    background: var(--teal-soft);
    color: var(--ink);
}

.error-box {
    margin-top: 20px;
    padding: 15px 17px;
    border: 1px solid #efb9a9;
    border-radius: 10px;
    background: #fff4f0;
    color: #8e3e2d;
    line-height: 1.5;
}

footer {
    padding: 30px 0 38px;
    color: var(--muted);
    font-size: .8rem;
    text-align: center;
}

footer span {
    color: var(--ink);
    font-weight: 700;
}

.hidden {
    display: none !important;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media print {

    body,
    body::before {
        background: #fff;
    }

    .site-header,
    .planner-card,
    .hero-section,
    footer,
    .result-actions,
    #threadInfo {
        display: none;
    }

    .app-container {
        width: 100%;
        padding: 0;
    }

    .result-section {
        border: 0;
        box-shadow: none;
        padding: 0;
    }

    .pdf-content {
        padding: 0;
    }

    .pdf-title {
        display: block;
        margin-bottom: 20px;
        font: 700 2rem "Manrope", sans-serif;
    }
}

@media (max-width:700px) {
    .app-container {
        width: min(100% - 28px, 560px);
        padding-top: 18px;
    }

    .hero-section {
        padding: 64px 0 38px;
    }

    .hero-section h1 {
        font-size: clamp(2.1rem, 10vw, 3.4rem);
    }

    .planner-card,
    .result-section {
        padding: 21px;
    }

    .card-header,
    .result-header {
        flex-direction: column;
        gap: 15px;
    }

    .shortcut {
        align-self: flex-start;
    }

    .input-area {
        grid-template-columns: 1fr;
    }

    #sendBtn {
        width: 100%;
    }

    .pdf-content {
        padding: 19px;
    }

    .result-actions {
        width: 100%;
    }

    .copy-btn,
    .download-btn {
        flex: 1;
    }
}