:root {
    color-scheme: dark;
    font-family: "DM Sans", "Geist", ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    --color-canvas: #0a0a0a;
    --color-surface: #161616;
    --color-glass: rgba(212, 212, 212, 0.08);
    --color-white: #ffffff;
    --color-bone: #ededed;
    --color-ash: #c2c2c2;
    --color-slate: #858585;
    --color-hairline: rgba(229, 229, 229, 0.16);
    --color-focus: rgba(255, 255, 255, 0.72);
    --radius-control: 10px;
    --radius-card: 24px;
    --radius-pill: 9999px;
    background: var(--color-canvas);
    color: var(--color-bone);
}

* {
    box-sizing: border-box;
}

body {
    min-width: 320px;
    min-height: 100vh;
    margin: 0;
    background:
        radial-gradient(ellipse at 50% -24%, rgba(107, 98, 242, 0.12), transparent 48%),
        var(--color-canvas);
    color: var(--color-bone);
}

button,
input,
select {
    font: inherit;
}

button,
select {
    -webkit-tap-highlight-color: transparent;
}

.app-shell {
    width: min(100% - 48px, 1200px);
    min-height: 100vh;
    margin: 0 auto;
    padding: 24px 0 32px;
}

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    min-height: 68px;
    padding: 10px 14px 10px 20px;
    border: 1px solid var(--color-hairline);
    border-radius: 20px;
    background: rgba(22, 22, 22, 0.76);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 11px;
    color: var(--color-bone);
    font-size: 15px;
    font-weight: 500;
    letter-spacing: -0.02em;
}

.brand-mark {
    display: grid;
    width: 34px;
    height: 34px;
    place-items: center;
    border: 1px solid var(--color-hairline);
    border-radius: 11px;
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-white);
}

.brand-mark svg {
    width: 19px;
    height: 19px;
}

.brand-name span {
    color: var(--color-ash);
    font-weight: 400;
}

.language-switcher {
    display: flex;
    align-items: center;
    gap: 10px;
}

.language-switcher label {
    color: var(--color-ash);
    font-size: 13px;
}

.language-switcher select {
    min-height: 38px;
    padding: 7px 32px 7px 13px;
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-pill);
    outline: none;
    background: rgba(255, 255, 255, 0.04);
    color: var(--color-bone);
    cursor: pointer;
    transition: border-color 160ms ease, background-color 160ms ease;
}

.language-switcher select:hover,
.language-switcher select:focus-visible {
    border-color: rgba(229, 229, 229, 0.38);
    background-color: rgba(255, 255, 255, 0.08);
}

.language-switcher option {
    background: var(--color-surface);
    color: var(--color-bone);
}

.workspace {
    display: grid;
    grid-template-columns: minmax(270px, 0.78fr) minmax(0, 1.22fr);
    align-items: stretch;
    gap: 20px;
    padding: 44px 0 28px;
}

.hero-panel {
    position: relative;
    display: flex;
    min-height: 640px;
    flex-direction: column;
    justify-content: space-between;
    overflow: hidden;
    padding: clamp(28px, 4vw, 48px);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 32px;
    background: linear-gradient(145deg, #bf8359 0%, #a67d87 48%, #526ca8 100%);
    isolation: isolate;
}

.hero-panel::after {
    position: absolute;
    z-index: -1;
    right: -120px;
    bottom: -180px;
    width: 430px;
    height: 430px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(107, 98, 242, 0.42), rgba(107, 98, 242, 0) 68%);
    content: "";
    pointer-events: none;
}

.hero-copy {
    max-width: 450px;
}

.eyebrow,
.card-eyebrow {
    display: flex;
    align-items: center;
    gap: 9px;
    margin: 0;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.1em;
    line-height: 1.5;
    text-transform: uppercase;
}

.eyebrow {
    color: rgba(255, 255, 255, 0.84);
}

.eyebrow-mark {
    width: 7px;
    height: 7px;
    border-radius: 3px;
    background: var(--color-white);
}

.hero-panel h1 {
    max-width: 480px;
    margin: 25px 0 18px;
    color: var(--color-white);
    font-size: clamp(42px, 5vw, 68px);
    font-weight: 500;
    letter-spacing: -0.065em;
    line-height: 0.99;
}

.hero-description {
    max-width: 390px;
    margin: 0;
    color: rgba(255, 255, 255, 0.82);
    font-size: 16px;
    line-height: 1.65;
}

.hero-note {
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 360px;
    margin-top: 40px;
    padding: 13px 15px;
    border: 1px solid rgba(255, 255, 255, 0.28);
    border-radius: var(--radius-pill);
    background: rgba(22, 22, 22, 0.12);
    color: rgba(255, 255, 255, 0.9);
    font-size: 13px;
    line-height: 1.45;
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
}

.hero-note svg {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
}

.hero-signature {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 52px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 12px;
    letter-spacing: 0.04em;
}

.signature-line {
    width: 30px;
    height: 1px;
    background: rgba(255, 255, 255, 0.68);
}

.prediction-card {
    align-self: center;
    width: 100%;
    padding: clamp(24px, 3.2vw, 40px);
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-card);
    background: var(--color-glass);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
}

.card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 12px;
}

.card-eyebrow {
    color: var(--color-ash);
    letter-spacing: 0.08em;
}

.prediction-card h2 {
    margin: 9px 0 0;
    color: var(--color-bone);
    font-family: "Geist", "DM Sans", ui-sans-serif, system-ui, sans-serif;
    font-size: clamp(23px, 2.4vw, 30px);
    font-weight: 500;
    letter-spacing: -0.045em;
    line-height: 1.2;
}

.field-count {
    flex: 0 0 auto;
    padding: 7px 11px;
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-pill);
    color: var(--color-ash);
    font-size: 12px;
    line-height: 1;
}

.form-description {
    margin: 0 0 26px;
    color: var(--color-ash);
    font-size: 14px;
    line-height: 1.55;
}

.input-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 14px;
}

.field-block {
    display: flex;
    min-width: 0;
    flex-direction: column;
    gap: 8px;
}

.field-block label {
    color: var(--color-bone);
    font-size: 13px;
    font-weight: 400;
    line-height: 1.4;
}

.field-block input {
    width: 100%;
    min-height: 48px;
    padding: 12px 14px;
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-control);
    outline: none;
    background: rgba(0, 0, 0, 0.2);
    color: var(--color-white);
    font-size: 14px;
    transition: border-color 160ms ease, background-color 160ms ease;
}

.field-block input::placeholder {
    color: var(--color-slate);
    opacity: 1;
}

.field-block input:hover {
    border-color: rgba(229, 229, 229, 0.3);
}

.field-block input:focus-visible {
    border-color: var(--color-focus);
    background: rgba(0, 0, 0, 0.32);
}

.field-error {
    min-height: 15px;
    color: #ffaaa7;
    font-size: 11px;
    line-height: 1.35;
}

.action-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 22px;
}

button {
    display: inline-flex;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 10px 18px;
    border: 1px solid transparent;
    border-radius: var(--radius-pill);
    background: var(--color-white);
    color: #161616;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: transform 160ms ease, background-color 160ms ease, border-color 160ms ease;
}

button svg {
    width: 16px;
    height: 16px;
}

button:hover {
    transform: translateY(-1px);
}

button:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.8);
    outline-offset: 3px;
}

button:active {
    transform: translateY(0);
}

button.secondary {
    border-color: var(--color-hairline);
    background: transparent;
    color: var(--color-bone);
}

button.secondary:hover {
    border-color: rgba(229, 229, 229, 0.34);
    background: rgba(255, 255, 255, 0.06);
}

.result-panel {
    margin-top: 22px;
    padding: 18px;
    border: 1px solid var(--color-hairline);
    border-radius: 16px;
    background: rgba(0, 0, 0, 0.2);
}

.result-label {
    margin: 0 0 8px;
    color: var(--color-bone);
    font-family: "Geist", "DM Sans", ui-sans-serif, system-ui, sans-serif;
    font-size: 18px;
    font-weight: 500;
    line-height: 1.4;
}

.result-confidence,
.result-explanation {
    margin: 0;
    color: var(--color-ash);
    font-size: 13px;
    line-height: 1.6;
}

.result-explanation {
    margin-top: 5px;
}

.progress-bar {
    height: 3px;
    margin-top: 18px;
    overflow: hidden;
    border-radius: var(--radius-pill);
    background: rgba(255, 255, 255, 0.1);
}

.progress-bar__fill {
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: var(--color-white);
    transition: width 0.8s ease;
}

.app-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    padding: 8px 0 4px;
}

.disclaimer {
    max-width: 720px;
    margin: 0;
    color: var(--color-slate);
    font-size: 12px;
    line-height: 1.6;
    text-align: center;
}

.footer-bottom {
    display: flex;
    width: 100%;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--color-hairline);
}

.author-credit {
    margin: 0;
    color: var(--color-ash);
    font-size: 13px;
}

.social-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.social-links a {
    display: grid;
    width: 38px;
    height: 38px;
    place-items: center;
    border: 1px solid var(--color-hairline);
    border-radius: var(--radius-pill);
    color: var(--color-ash);
    font-size: 15px;
    text-decoration: none;
    transition: color 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.social-links a:hover,
.social-links a:focus-visible {
    border-color: rgba(229, 229, 229, 0.38);
    background: rgba(255, 255, 255, 0.06);
    color: var(--color-white);
}

.social-links a:focus-visible {
    outline: 2px solid rgba(255, 255, 255, 0.8);
    outline-offset: 3px;
}

@media (max-width: 900px) {
    .workspace {
        grid-template-columns: minmax(250px, 0.75fr) minmax(0, 1.25fr);
        gap: 14px;
        padding-top: 30px;
    }

    .hero-panel {
        min-height: 600px;
        padding: 28px;
    }

    .input-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .field-error {
        min-height: 0;
    }
}

@media (max-width: 680px) {
    .app-shell {
        width: min(100% - 32px, 520px);
        padding-top: 16px;
    }

    .app-header {
        min-height: 60px;
        padding: 8px 10px 8px 14px;
        border-radius: 17px;
    }

    .brand {
        gap: 8px;
        font-size: 14px;
    }

    .brand-mark {
        width: 32px;
        height: 32px;
    }

    .language-switcher {
        gap: 7px;
    }

    .language-switcher label {
        font-size: 12px;
    }

    .language-switcher select {
        min-height: 35px;
        padding: 6px 26px 6px 10px;
        font-size: 12px;
    }

    .workspace {
        grid-template-columns: 1fr;
        gap: 14px;
        padding: 22px 0 20px;
    }

    .hero-panel {
        min-height: 0;
        padding: 28px;
        border-radius: 26px;
    }

    .hero-panel h1 {
        max-width: 390px;
        margin-top: 20px;
        font-size: clamp(42px, 12vw, 58px);
    }

    .hero-description {
        max-width: 440px;
        font-size: 15px;
    }

    .hero-note {
        margin-top: 26px;
    }

    .hero-signature {
        margin-top: 34px;
    }

    .prediction-card {
        padding: 24px 20px;
        border-radius: 22px;
    }

    .input-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 14px 11px;
    }

    .field-block input {
        padding-inline: 11px;
    }
}

@media (max-width: 420px) {
    .app-shell {
        width: min(100% - 24px, 520px);
    }

    .brand {
        font-size: 13px;
    }

    .brand-mark {
        width: 30px;
        height: 30px;
    }

    .language-switcher label {
        display: none;
    }

    .card-header {
        gap: 8px;
    }

    .field-count {
        padding: 6px 8px;
        font-size: 11px;
    }

    .input-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .action-row {
        flex-direction: column;
    }

    .action-row button {
        width: 100%;
    }

    .footer-bottom {
        flex-direction: column;
        justify-content: center;
        padding-top: 14px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}