:root {
    --ucla-blue: #2774ae;
    --ucla-blue-dark: #0b3b68;
    --ucla-blue-deep: #062849;
    --ucla-gold: #ffd100;
    --sky: #8bb8e8;
    --ink: #16283b;
    --muted: #60758a;
    --line: #dbe6ef;
    --surface: #ffffff;
    --page: #f3f7fb;
    --shadow: 0 18px 45px rgba(25, 58, 88, 0.09);
}

* {
    box-sizing: border-box;
}

html {
    background: var(--page);
}

body {
    margin: 0;
    color: var(--ink);
    background:
        radial-gradient(circle at 10% 5%, rgba(139, 184, 232, 0.2), transparent 28rem),
        linear-gradient(180deg, #eef6fc 0, var(--page) 32rem, #f7f9fb 100%);
    font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    line-height: 1.5;
}

button,
input {
    font: inherit;
}

.yap-app {
    width: min(1560px, calc(100% - 40px));
    margin: 28px auto 64px;
}

.yap-hero {
    position: relative;
    isolation: isolate;
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    min-height: 260px;
    padding: 42px 48px;
    overflow: hidden;
    color: #fff;
    background: #062849 url("./yap-hybrid-bonding-hero-v2.png") center 48% / cover no-repeat;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 24px 24px 8px 8px;
    box-shadow: 0 24px 70px rgba(11, 59, 104, 0.22);
}

.yap-hero::before,
.yap-hero::after {
    display: none;
}

.brand-lockup {
    display: flex;
    align-items: center;
    gap: 26px;
}

.brand-mark {
    display: grid;
    width: 78px;
    height: 78px;
    flex: 0 0 78px;
    place-items: center;
    color: var(--ucla-blue-deep);
    background: var(--ucla-gold);
    border-radius: 20px;
    box-shadow: 0 12px 30px rgba(1, 24, 45, 0.24);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 48px;
    font-weight: 700;
    line-height: 1;
}

.hero-eyebrow,
.section-kicker,
.action-eyebrow {
    margin: 0 0 7px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    font-size: 12px;
    font-weight: 750;
}

.hero-eyebrow {
    color: var(--ucla-gold);
}

.hero-title {
    margin: 0;
    color: #fff;
    font-family: Georgia, "Times New Roman", serif;
    font-size: clamp(50px, 6vw, 82px);
    font-weight: 700;
    letter-spacing: -0.045em;
    line-height: 0.9;
}

.hero-subtitle {
    max-width: 570px;
    margin: 13px 0 0;
    color: rgba(255, 255, 255, 0.78);
    font-size: clamp(16px, 1.6vw, 21px);
    letter-spacing: 0.01em;
}

.hero-meta {
    display: flex;
    max-width: 410px;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 9px;
}

.hero-chip {
    padding: 8px 13px;
    color: rgba(255, 255, 255, 0.88);
    background: rgba(255, 255, 255, 0.09);
    border: 1px solid rgba(255, 255, 255, 0.17);
    border-radius: 999px;
    backdrop-filter: blur(8px);
    font-size: 12px;
    font-weight: 650;
}

.hero-chip-accent {
    color: var(--ucla-blue-deep);
    background: var(--ucla-gold);
    border-color: var(--ucla-gold);
}

.yap-tabs {
    margin-top: 14px;
}

.yap-tab {
    display: flex !important;
    height: 58px !important;
    align-items: center;
    justify-content: flex-start;
    padding: 0 28px !important;
    color: var(--muted) !important;
    background: rgba(255, 255, 255, 0.72) !important;
    border: 0 !important;
    border-radius: 8px 8px 0 0;
    font-size: 14px;
    font-weight: 650;
}

.yap-tab--selected {
    position: relative;
    color: var(--ucla-blue-dark) !important;
    background: var(--surface) !important;
    box-shadow: 0 -10px 30px rgba(25, 58, 88, 0.05);
}

.yap-tab--selected::after {
    position: absolute;
    right: 28px;
    bottom: 0;
    left: 28px;
    height: 3px;
    content: "";
    background: var(--ucla-gold);
    border-radius: 3px 3px 0 0;
}

.workspace-shell {
    padding: 24px;
    background: rgba(255, 255, 255, 0.62);
    border: 1px solid rgba(219, 230, 239, 0.8);
    border-top: 0;
    border-radius: 0 0 20px 20px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(12px);
}

.parameters-grid {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) !important;
    align-items: start;
    gap: 24px !important;
}

.parameter-column {
    min-width: 0;
    padding: 34px !important;
    background: var(--surface) !important;
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: 0 12px 34px rgba(27, 62, 94, 0.055);
}

.section-heading {
    padding: 0 0 24px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--line);
}

.section-kicker,
.action-eyebrow {
    color: var(--ucla-blue);
}

.section-title {
    margin: 0;
    color: var(--ucla-blue-deep);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 30px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.section-description,
.action-description {
    margin: 8px 0 0;
    color: var(--muted);
    font-size: 14px;
}

.parameter-column > div[style*="display: flex"],
.parameter-column .card-body div[style*="display: flex"] {
    min-height: 48px;
    flex-wrap: wrap;
    padding: 7px 0;
    border-bottom: 1px solid #edf2f6;
    row-gap: 8px !important;
}

.parameter-column > div[style*="display: flex"]:hover,
.parameter-column .card-body div[style*="display: flex"]:hover {
    background: linear-gradient(90deg, rgba(139, 184, 232, 0.08), transparent);
}

.parameter-column label,
.parameter-column span[style*="width"] {
    width: 230px !important;
    color: #30475e !important;
    font-size: 14px !important;
    font-weight: 580;
}

.parameter-column span[style*="cursor: pointer"]::after {
    display: inline-grid;
    width: 17px;
    height: 17px;
    margin-left: 7px;
    place-items: center;
    content: "?";
    color: var(--ucla-blue);
    background: #e8f2fa;
    border-radius: 50%;
    vertical-align: 1px;
    font-size: 10px;
    font-weight: 800;
}

.parameter-column input[type="number"] {
    width: 112px !important;
    height: 38px;
    padding: 7px 10px;
    color: var(--ink);
    background: #fbfdff;
    border: 1px solid #cbd9e5;
    border-radius: 8px;
    outline: 0;
    transition: border-color 150ms ease, box-shadow 150ms ease, background 150ms ease;
}

.parameter-column input[type="number"]:hover {
    border-color: var(--sky);
}

.parameter-column input[type="number"]:focus {
    background: #fff;
    border-color: var(--ucla-blue);
    box-shadow: 0 0 0 3px rgba(39, 116, 174, 0.13);
}

.parameter-column .dash-dropdown,
.parameter-column .Select {
    min-width: 210px;
    max-width: 100%;
    color: var(--ink);
}

.parameter-column .Select-control {
    min-height: 40px;
    background: #fbfdff;
    border-color: #cbd9e5;
    border-radius: 8px;
}

.parameter-column .is-focused:not(.is-open) > .Select-control {
    border-color: var(--ucla-blue);
    box-shadow: 0 0 0 3px rgba(39, 116, 174, 0.13);
}

.parameter-column .Select-menu-outer {
    z-index: 1000;
    overflow: hidden;
    border-color: var(--line);
    border-radius: 8px;
    box-shadow: 0 16px 36px rgba(20, 54, 85, 0.16);
}

.parameter-column input[type="checkbox"] {
    width: 16px;
    height: 16px;
    margin-right: 7px;
    accent-color: var(--ucla-blue);
}

.parameter-column .card {
    max-width: none !important;
    margin: 4px 0 18px !important;
    overflow: visible;
    background: #fbfdff;
    border: 1px solid var(--line) !important;
    border-left: 3px solid var(--sky) !important;
    border-radius: 12px !important;
    box-shadow: none !important;
}

.parameter-column .card-body {
    padding: 12px 18px 16px;
}

.parameter-column .card-body > div {
    max-width: none !important;
    padding: 0 !important;
    background: transparent !important;
}

#toggle-advanced-btn-overlay,
#toggle-advanced-btn-defect,
#toggle-advanced-btn-recess {
    width: 100%;
    min-height: 44px;
    margin: 8px 0 10px !important;
    padding: 10px 15px;
    color: var(--ucla-blue-dark);
    background: #edf6fc !important;
    border: 1px solid #cfe2f2 !important;
    border-radius: 9px;
    box-shadow: none !important;
    text-align: left;
    font-size: 13px;
    font-weight: 650;
    transition: transform 150ms ease, border-color 150ms ease, background 150ms ease;
}

#toggle-advanced-btn-overlay:hover,
#toggle-advanced-btn-defect:hover,
#toggle-advanced-btn-recess:hover {
    color: var(--ucla-blue-deep);
    background: #e4f1fa !important;
    border-color: var(--sky) !important;
    transform: translateY(-1px);
}

.action-panel {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 22px;
    margin: 22px 0 18px;
    background: linear-gradient(135deg, #eef7fd, #f8fbfe);
    border: 1px solid #d6e8f4;
    border-radius: 13px;
}

.action-title {
    margin: 0;
    color: var(--ucla-blue-deep);
    font-family: Georgia, "Times New Roman", serif;
    font-size: 23px;
}

.calculate-button {
    display: inline-flex;
    min-height: 48px;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 0 18px;
    color: #fff;
    background: var(--ucla-blue-dark);
    border: 0;
    border-radius: 9px;
    box-shadow: 0 9px 20px rgba(11, 59, 104, 0.18);
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    transition: transform 150ms ease, background 150ms ease, box-shadow 150ms ease;
}

.calculate-button:hover {
    background: var(--ucla-blue);
    box-shadow: 0 12px 26px rgba(39, 116, 174, 0.24);
    transform: translateY(-2px);
}

.calculate-button:active {
    transform: translateY(0);
}

.button-arrow {
    display: grid;
    width: 25px;
    height: 25px;
    place-items: center;
    color: var(--ucla-blue-deep);
    background: var(--ucla-gold);
    border-radius: 50%;
    font-size: 16px;
}

.results-loading {
    position: relative;
    min-height: 470px;
    overflow: hidden;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 13px;
}

.results-graph {
    width: 100%;
    min-height: 470px;
}

.modebar {
    top: 118px !important;
    right: 12px !important;
    padding: 4px;
    background: rgba(255, 255, 255, 0.9) !important;
    border: 1px solid var(--line);
    border-radius: 7px;
}

.progress-panel {
    padding: 4px 3px 0;
}

.progress-panel .progress {
    height: 9px !important;
    margin-top: 16px !important;
    overflow: hidden;
    background: #e9f0f5;
    border-radius: 999px;
}

.progress-panel .progress-bar {
    background: linear-gradient(90deg, var(--ucla-blue), #4fa8de);
}

.progress-label {
    margin: 8px 0 0;
    color: var(--muted);
    text-align: right;
    font-size: 12px;
    font-weight: 650;
}

.tooltip-inner {
    padding: 10px 12px;
    background: var(--ucla-blue-deep);
    border-radius: 8px;
    box-shadow: 0 10px 26px rgba(6, 40, 73, 0.2);
    line-height: 1.45;
}

@media (max-width: 1120px) {
    .yap-hero {
        align-items: flex-start;
        flex-direction: column;
        gap: 30px;
    }

    .hero-meta {
        justify-content: flex-start;
    }

    .parameters-grid {
        grid-template-columns: minmax(0, 1fr) !important;
    }
}

@media (max-width: 680px) {
    .yap-app {
        width: min(100% - 20px, 1560px);
        margin-top: 10px;
    }

    .yap-hero {
        min-height: 0;
        padding: 30px 24px;
        background-position: 58% center;
        border-radius: 16px 16px 6px 6px;
    }

    .brand-lockup {
        align-items: flex-start;
        gap: 16px;
    }

    .brand-mark {
        width: 54px;
        height: 54px;
        flex-basis: 54px;
        border-radius: 14px;
        font-size: 34px;
    }

    .hero-title {
        font-size: 50px;
    }

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

    .hero-chip {
        padding: 6px 10px;
    }

    .workspace-shell {
        padding: 10px;
    }

    .parameter-column {
        padding: 22px 18px !important;
        border-radius: 12px;
    }

    .parameter-column > div[style*="display: flex"],
    .parameter-column .card-body div[style*="display: flex"] {
        align-items: flex-start !important;
    }

    .parameter-column label,
    .parameter-column span[style*="width"] {
        width: 100% !important;
        flex-basis: 100%;
    }

    .parameter-column .dash-dropdown,
    .parameter-column .Select {
        width: 100% !important;
    }

    .action-panel {
        align-items: stretch;
        flex-direction: column;
    }

    .calculate-button {
        width: 100%;
    }

    .results-loading,
    .results-graph {
        min-height: 400px;
    }
}

@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;
    }
}