:root {
    color-scheme: dark;
    --bg: #0b0f14;
    --panel: #121922;
    --panel-strong: #18212c;
    --panel-border: #233041;
    --text: #ecf3fb;
    --text-muted: #9fb0c3;
    --accent: #58a6ff;
    --accent-hover: #7ab8ff;
    --danger-bg: #35171d;
    --danger-border: #6d2836;
    --danger-text: #ffb8c4;
    --success-bg: #123322;
    --success-border: #1f5f3a;
    --success-text: #9be2b4;
    --input-bg: #0f151d;
}

* {
    box-sizing: border-box;
}

html {
    font-size: 16px;
    min-height: 100%;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(180deg, #0a0f14 0%, #0f1721 100%);
    color: var(--text);
}

a {
    color: var(--accent);
    text-decoration: none;
}

    a:hover {
        color: var(--accent-hover);
    }

.app-shell {
    min-height: 100vh;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 28px;
    border-bottom: 1px solid var(--panel-border);
    background: rgba(9, 13, 18, 0.92);
    backdrop-filter: blur(10px);
}

.topbar-brand a {
    color: var(--text);
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

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

.topbar-logout-form {
    margin: 0;
}

.topbar-logout-button {
    border: 0;
    background: transparent;
    color: var(--accent);
    cursor: pointer;
    font: inherit;
    padding: 0;
}

    .topbar-logout-button:hover {
        color: var(--accent-hover);
    }

.page-content {
    padding: 32px 24px 48px;
}

.login-page {
    min-height: calc(100vh - 110px);
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-card {
    width: 100%;
    max-width: 460px;
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
}

.login-header h1,
.dashboard-header h1,
.project-form-header h1,
.project-details-header h1 {
    margin: 0 0 10px;
    font-size: 2rem;
}

.login-eyebrow,
.dashboard-eyebrow {
    margin: 0 0 10px;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.78rem;
    font-weight: 700;
}

.login-subtitle,
.dashboard-subtitle {
    margin: 0 0 24px;
    color: var(--text-muted);
    line-height: 1.5;
}

.login-form,
.project-form {
    display: grid;
    gap: 18px;
}

.form-group {
    display: grid;
    gap: 8px;
}

    .form-group label {
        font-size: 0.95rem;
        color: var(--text-muted);
    }

.login-input {
    width: 100%;
    border: 1px solid var(--panel-border);
    background: var(--input-bg);
    color: var(--text);
    border-radius: 12px;
    padding: 14px 16px;
    font-size: 1rem;
    outline: none;
}

    .login-input:focus {
        border-color: var(--accent);
    }

.form-textarea {
    min-height: 180px;
    resize: vertical;
    font-family: inherit;
}

.login-button {
    border: 0;
    border-radius: 12px;
    padding: 14px 16px;
    background: var(--accent);
    color: #07111b;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
}

    .login-button:hover {
        background: var(--accent-hover);
    }

.secondary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 12px 18px;
    border-radius: 12px;
    border: 1px solid var(--panel-border);
    background: var(--panel-strong);
    color: var(--text);
    font-weight: 600;
}

    .secondary-button:hover {
        border-color: var(--accent);
        color: var(--text);
    }

.login-error,
.dashboard-error,
.dashboard-success {
    margin-bottom: 16px;
    padding: 12px 14px;
    border-radius: 12px;
}

.login-error,
.dashboard-error {
    border: 1px solid var(--danger-border);
    background: var(--danger-bg);
    color: var(--danger-text);
}

.dashboard-success {
    border: 1px solid var(--success-border);
    background: var(--success-bg);
    color: var(--success-text);
}

.login-validation {
    color: #ff9dad;
    font-size: 0.9rem;
}

.dashboard-page,
.project-form-page,
.project-details-page {
    display: grid;
    gap: 24px;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.metric-card,
.dashboard-card,
.project-form-card {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.22);
}

.metric-card,
.dashboard-card,
.project-form-card {
    padding: 22px;
}

.metric-label {
    margin: 0 0 10px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.metric-value {
    margin: 0;
    font-size: 1.9rem;
    font-weight: 700;
}

.metric-value-small {
    font-size: 1.35rem;
    line-height: 1.35;
    word-break: break-word;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 20px;
}

.dashboard-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
}

    .dashboard-card-header h2 {
        margin: 0;
        font-size: 1.2rem;
    }

.dashboard-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 34px;
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--panel-strong);
    border: 1px solid var(--panel-border);
    color: var(--text);
    font-size: 0.85rem;
    font-weight: 700;
}

.dashboard-list {
    display: grid;
    gap: 14px;
}

.dashboard-list-item {
    display: grid;
    gap: 10px;
    padding: 16px;
    border: 1px solid var(--panel-border);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.02);
}

.dashboard-list-main h3 {
    margin: 0 0 6px;
    font-size: 1.05rem;
}

.dashboard-list-main p {
    margin: 0;
    color: var(--text-muted);
    line-height: 1.5;
}

.dashboard-list-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.dashboard-empty {
    margin: 0;
    color: var(--text-muted);
}

.project-link {
    color: var(--text);
}

    .project-link:hover {
        color: var(--accent);
    }

.project-form-shell {
    display: flex;
    justify-content: center;
}

.project-form-card {
    width: 100%;
    max-width: 860px;
}

.project-form-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    margin-top: 8px;
}

.assign-session-form {
    display: grid;
    gap: 8px;
    margin-top: 4px;
}

.assign-session-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    align-items: center;
}

.assign-session-select {
    min-width: 0;
}

.assign-session-button {
    min-height: 48px;
    white-space: nowrap;
}

.project-details-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
}

.project-details-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.project-info-grid {
    display: grid;
    gap: 14px;
}

.project-info-row {
    display: grid;
    grid-template-columns: 160px minmax(0, 1fr);
    gap: 12px;
    align-items: start;
}

.project-info-label {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.project-info-value {
    color: var(--text);
    line-height: 1.5;
    word-break: break-word;
}

@media (max-width: 1100px) {
    .metrics-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 700px) {
    .project-details-header {
        flex-direction: column;
    }

    .project-details-actions {
        width: 100%;
    }

        .project-details-actions .secondary-button {
            width: 100%;
        }

    .project-info-row {
        grid-template-columns: 1fr;
        gap: 6px;
    }
}

@media (max-width: 640px) {
    .topbar {
        padding: 16px 18px;
    }

    .page-content {
        padding: 20px 16px 32px;
    }

    .login-card,
    .dashboard-card,
    .metric-card,
    .project-form-card {
        padding: 20px;
    }

    .metrics-grid {
        grid-template-columns: 1fr;
    }

    .project-form-actions,
    .assign-session-row {
        flex-direction: column;
        grid-template-columns: 1fr;
        align-items: stretch;
    }

    .secondary-button,
    .login-button,
    .assign-session-button {
        width: 100%;
    }
}


.document-upload-form {
    margin-bottom: 16px;
}

.document-upload-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 10px;
    align-items: center;
}

.document-file-input {
    padding-top: 12px;
    padding-bottom: 12px;
}

.document-upload-button {
    min-height: 48px;
    white-space: nowrap;
}

.document-delete-form {
    margin-top: 4px;
}

.danger-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 10px 14px;
    border: 1px solid var(--danger-border);
    border-radius: 12px;
    background: var(--danger-bg);
    color: var(--danger-text);
    font-weight: 600;
    cursor: pointer;
}

    .danger-button:hover {
        filter: brightness(1.08);
    }

@media (max-width: 640px) {
    .document-upload-row {
        grid-template-columns: 1fr;
    }

    .document-upload-button,
    .danger-button {
        width: 100%;
    }
}