html, body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    height: 100%;
    margin: 0;
}

#app {
    height: 100%;
}

h1:focus {
    outline: none;
}

a, .btn-link {
    color: #0071c1;
}

.btn-primary {
    color: #fff;
    background-color: #1b6ec2;
    border-color: #1861ac;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}

.content {
    padding-top: 1.1rem;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid red;
}

.validation-message {
    color: red;
}

#blazor-error-ui {
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

    #blazor-error-ui .dismiss {
        cursor: pointer;
        position: absolute;
        right: 0.75rem;
        top: 0.5rem;
    }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.loading-progress {
    position: relative;
    display: block;
    width: 8rem;
    height: 8rem;
    margin: 20vh auto 1rem auto;
}

    .loading-progress circle {
        fill: none;
        stroke: #e0e0e0;
        stroke-width: 0.6rem;
        transform-origin: 50% 50%;
        transform: rotate(-90deg);
    }

        .loading-progress circle:last-child {
            stroke: #1b6ec2;
            stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
            transition: stroke-dasharray 0.05s ease-in-out;
        }

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: bold;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
}

    .loading-progress-text:after {
        content: var(--blazor-load-percentage-text, "Loading");
    }

code {
    color: #c02d76;
}

.hidden {
    display: none !important;
}

/* Auth form (student/guest) — dark theme as Index */
.auth-page {
    width: 100%;
    max-width: 420px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.auth-back {
    align-self: flex-start;
    font-size: 0.9rem;
    font-weight: 500;
    color: #94a3b8;
    text-decoration: none;
    margin-bottom: 20px;
    padding: 8px 0;
    transition: color 0.2s;
}

.auth-back:hover {
    color: #38bdf8;
}

.auth-card {
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(24px);
    border: 1px solid rgba(148, 163, 184, 0.2);
    padding: 40px 36px;
    border-radius: 20px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    width: 100%;
}

.auth-card-header {
    text-align: center;
    margin-bottom: 28px;
}

.auth-badge {
    display: inline-block;
    padding: 6px 14px;
    font-size: 0.75rem;
    font-weight: 600;
    color: #f97316;
    background: rgba(249, 115, 22, 0.2);
    border-radius: 20px;
    margin-bottom: 12px;
}

.auth-card-header h1 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #f8fafc;
    margin: 0 0 6px 0;
}

.auth-card-header p {
    font-size: 0.9rem;
    color: #94a3b8;
    margin: 0;
}

.auth-alert {
    padding: 14px 16px;
    border-radius: 12px;
    font-size: 0.9rem;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.auth-alert-error {
    background: rgba(220, 38, 38, 0.15);
    border: 1px solid rgba(248, 113, 113, 0.4);
    color: #fca5a5;
}

.auth-alert-icon {
    font-weight: 700;
}

.auth-form {
    margin-top: 8px;
}

.auth-field {
    margin-bottom: 20px;
}

.auth-field.hidden,
.auth-submit.hidden {
    display: none !important;
}

.auth-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: #94a3b8;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.auth-input {
    width: 100%;
    padding: 14px 16px;
    font-size: 1rem;
    font-family: inherit;
    border: 2px solid rgba(148, 163, 184, 0.3);
    border-radius: 12px;
    background: rgba(30, 41, 59, 0.6);
    color: #f8fafc;
    transition: border-color 0.2s;
}

.auth-input:focus {
    outline: none;
    border-color: #f97316;
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.2);
}

.auth-submit {
    margin-top: 24px;
}

.auth-btn {
    width: 100%;
    padding: 16px 24px;
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    color: #fff;
    background: linear-gradient(135deg, #f97316 0%, #ea580c 100%);
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.auth-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(249, 115, 22, 0.4);
}

/* Кнопки «Добавить задание» и «К Чертежнику» на странице управления заданиями */
.tasks-page .drawman-user-info .tasks-header-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.01em;
}

.tasks-page .drawman-user-info .tasks-header-btn-add {
    background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
    color: white;
    box-shadow: 0 4px 14px rgba(14, 165, 233, 0.4);
}

.tasks-page .drawman-user-info .tasks-header-btn-add:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
    background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 100%);
}

.tasks-page .drawman-user-info .tasks-header-btn-add:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(14, 165, 233, 0.35);
}

.tasks-page .drawman-user-info .tasks-header-btn-back {
    background: rgba(51, 65, 85, 0.5);
    color: #e2e8f0;
    border: 1px solid rgba(148, 163, 184, 0.3);
}

.tasks-page .drawman-user-info .tasks-header-btn-back:hover {
    background: rgba(71, 85, 105, 0.6);
    border-color: rgba(148, 163, 184, 0.5);
    transform: translateY(-1px);
    color: white;
}

.tasks-page .drawman-user-info .tasks-header-btn-back:active {
    transform: translateY(0);
}

.tasks-page .drawman-user-info .tasks-header-btn:focus-visible {
    outline: 2px solid #38bdf8;
    outline-offset: 2px;
}

/* Кнопки в шапке страницы «Управление заданиями» */
.tasks-page .drawman-user-info .tasks-header-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.01em;
}

.tasks-page .drawman-user-info .tasks-header-btn-add {
    background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%) !important;
    color: white !important;
    box-shadow: 0 4px 14px rgba(14, 165, 233, 0.4);
}

.tasks-page .drawman-user-info .tasks-header-btn-add:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
    background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 100%) !important;
    color: white !important;
}

.tasks-page .drawman-user-info .tasks-header-btn-add:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(14, 165, 233, 0.35);
}

.tasks-page .drawman-user-info .tasks-header-btn-back {
    background: rgba(51, 65, 85, 0.5) !important;
    color: #e2e8f0 !important;
    border: 1px solid rgba(148, 163, 184, 0.3);
}

.tasks-page .drawman-user-info .tasks-header-btn-back:hover {
    background: rgba(71, 85, 105, 0.6) !important;
    border-color: rgba(148, 163, 184, 0.5);
    transform: translateY(-1px);
    color: white !important;
}

.tasks-page .drawman-user-info .tasks-header-btn-back:active {
    transform: translateY(0);
}

.tasks-page .drawman-user-info .tasks-header-btn:focus-visible {
    outline: 2px solid #38bdf8;
    outline-offset: 2px;
}

/* Поле «Ожидаемые сегменты (JSON)» — принудительно на всю ширину */
.tasks-segments-wrap textarea,
.tasks-form-section-segments textarea,
textarea.tasks-input-segments {
    width: 100% !important;
    min-width: 100% !important;
    max-width: none !important;
    box-sizing: border-box;
}

/* Кнопки в шапке страницы «Управление заданиями» — современный вид */
.tasks-page .drawman-user-info .tasks-header-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 10px;
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.01em;
}

.tasks-page .drawman-user-info .tasks-header-btn-add {
    background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%) !important;
    color: white !important;
    box-shadow: 0 4px 14px rgba(14, 165, 233, 0.4);
}

.tasks-page .drawman-user-info .tasks-header-btn-add:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.5);
    background: linear-gradient(135deg, #38bdf8 0%, #0ea5e9 100%) !important;
}

.tasks-page .drawman-user-info .tasks-header-btn-add:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(14, 165, 233, 0.35);
}

.tasks-page .drawman-user-info .tasks-header-btn-back {
    background: rgba(51, 65, 85, 0.5) !important;
    color: #e2e8f0 !important;
    border: 1px solid rgba(148, 163, 184, 0.3);
}

.tasks-page .drawman-user-info .tasks-header-btn-back:hover {
    background: rgba(71, 85, 105, 0.6) !important;
    border-color: rgba(148, 163, 184, 0.5);
    transform: translateY(-1px);
    color: white !important;
}

.tasks-page .drawman-user-info .tasks-header-btn-back:active {
    transform: translateY(0);
}

.tasks-page .drawman-user-info .tasks-header-btn:focus-visible {
    outline: 2px solid #38bdf8;
    outline-offset: 2px;
}