:root {
    --bg: #ffffff;
    --bg-soft: #f8fafc;
    --text: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #64748b;
    --border: #e2e8f0;
    --accent: #0078d4;
    --accent-light: rgba(0, 120, 212, 0.1);
    --accent-gradient: linear-gradient(135deg, #0078d4 0%, #00bcf2 100%);
    --shadow: 0 20px 25px -5px rgba(15, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(ellipse 70% 32% at 50% -10%, rgba(0, 120, 212, 0.13), transparent),
        var(--bg);
    font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.page {
    width: min(1080px, calc(100% - 40px));
    margin: 0 auto;
}

.masthead {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    min-height: 72px;
    border-bottom: 1px solid var(--border);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

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

.identity-mark {
    display: grid;
    width: 32px;
    height: 32px;
    place-items: center;
    border-radius: 9px;
    color: #fff;
    background: var(--accent-gradient);
    letter-spacing: 0;
}

.document-type {
    color: var(--text-tertiary);
}

.logout-button {
    padding: 7px 10px;
    border: 0;
    border-radius: 8px;
    color: var(--text-tertiary);
    background: transparent;
    font: inherit;
    letter-spacing: 0.08em;
    cursor: pointer;
}

.logout-button:hover,
.logout-button:focus-visible {
    color: var(--accent);
    background: var(--accent-light);
    outline: none;
}

.portfolio-selector {
    padding: 17px 0 19px;
    border-bottom: 1px solid var(--border);
}

.selector-label {
    display: block;
    margin-bottom: 10px;
    color: var(--text-tertiary);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-align: center;
    text-transform: uppercase;
}

.company-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 9px;
    width: min(760px, 100%);
    margin: 0 auto;
}

.company-grid a {
    display: grid;
    gap: 1px;
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 11px;
    color: var(--text-secondary);
    background: var(--bg);
    text-align: center;
    text-decoration: none;
    transition: border-color 120ms ease-out, box-shadow 120ms ease-out, transform 120ms ease-out;
}

.company-grid strong {
    color: var(--text);
    font-size: 0.78rem;
    letter-spacing: 0.08em;
}

.company-grid span {
    color: var(--text-tertiary);
    font-size: 0.67rem;
}

.company-grid a:hover,
.company-grid a:focus-visible {
    border-color: var(--accent);
    box-shadow: 0 6px 16px rgba(0, 120, 212, 0.12);
    outline: none;
    transform: translateY(-1px);
}

.company-grid a[aria-current="page"] {
    border-color: transparent;
    color: #fff;
    background: var(--accent-gradient);
}

.company-grid a[aria-current="page"] strong,
.company-grid a[aria-current="page"] span {
    color: #fff;
}

.logout-form {
    margin: 0;
    padding-left: 8px;
    border-left: 1px solid var(--border);
}

.logout-button {
    font-size: 0.68rem;
    text-transform: uppercase;
}

.hero {
    padding: 34px 0 29px;
    border-bottom: 1px solid var(--border);
}

.kicker,
.section-label {
    color: var(--accent);
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

h1 {
    font-weight: 800;
    line-height: 1.04;
    letter-spacing: -0.045em;
}

.hero h1 {
    max-width: 940px;
    margin: 9px 0 13px;
    font-size: clamp(2rem, 4.2vw, 3.35rem);
}

.hero-summary {
    max-width: 800px;
    margin: 0;
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.65;
}

.facts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 23px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--bg-soft);
    overflow: hidden;
}

.fact {
    min-height: 66px;
    padding: 11px 16px;
}

.fact + .fact {
    border-left: 1px solid var(--border);
}

.fact-label {
    display: block;
    margin-bottom: 5px;
    color: var(--text-tertiary);
    font-size: 0.66rem;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.fact-value {
    font-size: 0.88rem;
    font-weight: 700;
    line-height: 1.4;
}

.case-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 72px;
    row-gap: 34px;
    padding: 40px 0 52px;
}

.case-section {
    padding-top: 16px;
    border-top: 2px solid var(--accent-light);
}

.section-label {
    display: flex;
    gap: 10px;
    margin-bottom: 12px;
}

.section-number {
    color: var(--text-tertiary);
}

h2 {
    margin: 0 0 10px;
    font-size: 1.25rem;
    font-weight: 750;
    line-height: 1.25;
    letter-spacing: -0.025em;
}

.case-section p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.case-section--learning {
    grid-column: 1 / -1;
}

.case-section--learning p {
    max-width: 800px;
}

.case-section strong {
    color: var(--text);
    font-weight: 700;
}

.flow {
    display: block;
    margin-top: 10px;
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.02em;
}

footer {
    display: flex;
    justify-content: space-between;
    gap: 24px;
    padding: 24px 0 36px;
    border-top: 1px solid var(--border);
    color: var(--text-tertiary);
    font-size: 0.74rem;
}

.placeholder {
    display: grid;
    min-height: calc(100vh - 126px);
    place-items: center;
    padding: 52px 0;
}

.placeholder-content {
    max-width: 660px;
    text-align: center;
}

.placeholder-content h1 {
    margin: 10px auto 14px;
    font-size: clamp(2rem, 4.2vw, 3.2rem);
}

.placeholder-content p {
    margin: 0;
    color: var(--text-secondary);
    font-size: 1.08rem;
}

.login-page {
    min-height: 100vh;
}

.login-shell {
    width: min(520px, calc(100% - 32px));
    margin: 0 auto;
    padding: 72px 0;
}

.login-identity {
    margin-bottom: 28px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.login-panel {
    padding: clamp(30px, 7vw, 48px);
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--bg);
    box-shadow: var(--shadow);
}

.login-panel h1 {
    margin: 12px 0 16px;
    font-size: clamp(2.2rem, 9vw, 3.5rem);
}

.login-copy {
    margin: 0 0 28px;
    color: var(--text-secondary);
}

.login-form {
    display: grid;
    gap: 10px;
}

.login-form label {
    font-size: 0.8rem;
    font-weight: 700;
}

.login-form input {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    background: var(--bg);
    font: inherit;
}

.login-form input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
    outline: none;
}

.login-form button {
    margin-top: 6px;
    padding: 13px 18px;
    border: 0;
    border-radius: 10px;
    color: #fff;
    background: var(--accent-gradient);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

.login-form button:hover,
.login-form button:focus-visible {
    box-shadow: 0 8px 20px rgba(0, 120, 212, 0.24);
    transform: translateY(-1px);
    outline: none;
}

.form-error {
    margin: 0 0 18px;
    padding: 10px 12px;
    border-radius: 8px;
    color: #991b1b;
    background: #fef2f2;
    font-size: 0.84rem;
    font-weight: 650;
}

.privacy-note {
    margin: 26px 0 0;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    color: var(--text-tertiary);
    font-size: 0.72rem;
}

.admin-page {
    width: min(1440px, calc(100% - 40px));
    margin: 0 auto;
}

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

.admin-actions > a {
    padding: 7px 10px;
    border-radius: 8px;
    color: var(--text-tertiary);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-decoration: none;
    text-transform: uppercase;
}

.admin-actions > a:hover {
    color: var(--accent);
    background: var(--accent-light);
}

.admin-heading {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 32px;
    padding: 52px 0 32px;
}

.admin-heading h1 {
    margin: 10px 0 10px;
    font-size: clamp(2.5rem, 6vw, 4.5rem);
}

.admin-heading p {
    margin: 0;
    color: var(--text-secondary);
}

.log-filter {
    display: grid;
    flex: 0 0 220px;
    gap: 7px;
}

.log-filter label {
    color: var(--text-tertiary);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.log-filter select,
.log-filter button {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 9px;
    color: var(--text);
    background: var(--bg);
    font: inherit;
}

.log-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--bg-soft);
    overflow: hidden;
}

.log-stats > div {
    padding: 20px;
}

.log-stats > div + div {
    border-left: 1px solid var(--border);
}

.log-stats span {
    display: block;
    margin-bottom: 5px;
    color: var(--text-tertiary);
    font-size: 0.7rem;
    font-weight: 700;
}

.log-stats strong {
    font-size: 1.8rem;
    line-height: 1;
}

.log-panel {
    margin: 28px 0 64px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--bg);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.log-table-wrap {
    overflow-x: auto;
}

.log-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.78rem;
    text-align: left;
}

.log-table th {
    padding: 12px 14px;
    color: var(--text-tertiary);
    background: var(--bg-soft);
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.log-table td {
    max-width: 420px;
    padding: 12px 14px;
    border-top: 1px solid var(--border);
    vertical-align: top;
}

.log-table code {
    white-space: nowrap;
}

.log-time {
    min-width: 172px;
    white-space: nowrap;
}

.user-agent {
    color: var(--text-tertiary);
    overflow-wrap: anywhere;
}

.request-context {
    color: var(--text-tertiary);
    overflow-wrap: anywhere;
}

.request-context span {
    display: block;
    max-width: 260px;
}

.request-context span + span {
    margin-top: 4px;
}

.event-badge {
    display: inline-block;
    padding: 3px 7px;
    border-radius: 999px;
    color: var(--accent);
    background: var(--accent-light);
    font-size: 0.66rem;
    font-weight: 750;
    white-space: nowrap;
}

.empty-log {
    padding: 36px !important;
    color: var(--text-tertiary);
    text-align: center;
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px;
    border-top: 1px solid var(--border);
    color: var(--text-tertiary);
    font-size: 0.76rem;
}

.pagination div {
    display: flex;
    gap: 8px;
}

.pagination a {
    padding: 6px 10px;
    border-radius: 7px;
    color: var(--accent);
    background: var(--accent-light);
    font-weight: 700;
    text-decoration: none;
}

@media (max-width: 720px) {
    .document-type {
        display: none;
    }

    .masthead {
        flex-wrap: wrap;
        gap: 10px;
        padding: 14px 0;
    }

    .portfolio-selector {
        padding: 14px 0 16px;
    }

    .company-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 7px;
    }

    .company-grid a {
        padding: 8px 7px;
    }

    .hero {
        padding: 28px 0 25px;
    }

    .facts,
    .case-grid {
        grid-template-columns: 1fr;
    }

    .fact + .fact {
        border-top: 1px solid var(--border);
        border-left: 0;
    }

    .case-grid {
        row-gap: 30px;
        padding: 36px 0 46px;
    }

    .case-section--learning {
        grid-column: auto;
    }

    footer {
        flex-direction: column;
    }

    .login-shell {
        padding: 36px 0;
    }

    .admin-page {
        width: min(100% - 24px, 1440px);
    }

    .admin-heading {
        align-items: stretch;
        flex-direction: column;
        padding-top: 38px;
    }

    .log-filter {
        flex-basis: auto;
    }

    .log-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .log-stats > div + div {
        border-left: 0;
    }

    .log-stats > div:nth-child(even) {
        border-left: 1px solid var(--border);
    }

    .log-stats > div:nth-child(n+3) {
        border-top: 1px solid var(--border);
    }

    .placeholder {
        min-height: 56vh;
        padding: 44px 0;
    }
}

@media print {
    @page {
        margin: 14mm;
    }

    body {
        background: #fff;
    }

    .page {
        width: 100%;
    }

    .masthead {
        min-height: 48px;
    }

    .hero {
        padding: 34px 0 28px;
    }

    .hero h1,
    .placeholder h1 {
        font-size: 2.4rem;
    }

    .facts {
        box-shadow: none;
    }

    .case-grid {
        row-gap: 26px;
        padding: 36px 0 42px;
    }

    .case-section {
        break-inside: avoid;
    }
}