:root {
    color-scheme: dark;
    font-family: "Inter", "Segoe UI", sans-serif;
    background-color: #0f1b2b;
    color: #f2f6ff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    background: radial-gradient(circle at top, rgba(65, 105, 225, 0.35), rgba(15, 27, 43, 0.92) 60%);
}

.app {
    width: min(840px, 100%);
    padding: 32px 24px 48px;
}

header,
footer {
    text-align: center;
    margin-bottom: 24px;
    color: #90a6d8;
}

header h1 {
    margin: 0;
    font-weight: 600;
    letter-spacing: 0.06em;
}

footer p {
    margin: 0;
    font-size: 0.85rem;
}

.card {
    background: rgba(20, 30, 48, 0.95);
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 24px 70px rgba(4, 8, 20, 0.6);
    border: 1px solid rgba(120, 150, 255, 0.2);
    backdrop-filter: blur(18px);
}

.card h2 {
    margin-top: 0;
    font-weight: 600;
    color: #f7fbff;
}

label {
    display: block;
    font-weight: 600;
    margin: 16px 0 10px;
    color: #a8bcf1;
    letter-spacing: 0.02em;
}

input,
textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid rgba(120, 150, 255, 0.25);
    border-radius: 12px;
    font-size: 1rem;
    background: rgba(10, 16, 30, 0.9);
    color: #f2f6ff;
    outline: none;
    transition: border-color 0.15s ease, box-shadow 0.2s ease;
}

input:focus,
textarea:focus {
    border-color: rgba(102, 178, 255, 0.85);
    box-shadow: 0 0 0 4px rgba(102, 178, 255, 0.18);
}

textarea {
    resize: vertical;
    min-height: 110px;
}


.password-input {
    position: relative;
}

.password-input input {
    padding-right: 44px;
}

.password-toggle {
    position: absolute;
    top: 50%;
    right: 12px;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #8fa4d6;
    font-size: 0.9rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: background 0.15s ease;
    width: auto;
    margin-top: 0;
    line-height: 1;
    white-space: nowrap;
    box-shadow: none;
}

.password-toggle:hover {
    background: rgba(120, 150, 255, 0.18);
    color: #dbe7ff;
    transform: translateY(-50%);
    box-shadow: none;
}

button:not(.password-toggle) {
    margin-top: 20px;
    width: 100%;
    padding: 14px;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    border: none;
    border-radius: 12px;
    background: linear-gradient(135deg, #4569f5 0%, #3a86ff 100%);
    color: white;
    cursor: pointer;
    transition: transform 0.18s ease, box-shadow 0.18s ease;
}

button:not(.password-toggle):hover {
    transform: translateY(-1px);
    box-shadow: 0 14px 36px rgba(58, 134, 255, 0.32);
}

.secondary {
    background: rgba(69, 123, 157, 0.18);
    color: #b5c7ff;
    border: 1px solid rgba(168, 192, 255, 0.35);
    box-shadow: none;
}

.secondary:hover {
    background: rgba(69, 123, 157, 0.32);
    box-shadow: 0 12px 30px rgba(69, 123, 157, 0.28);
}

.danger {
    background: linear-gradient(135deg, #ef476f 0%, #ff6b6b 100%);
}

.danger:hover {
    box-shadow: 0 12px 30px rgba(239, 71, 111, 0.35);
}

.hint {
    font-size: 0.86rem;
    color: #8498c6;
    margin-top: 18px;
    line-height: 1.55;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 18px;
}

.panel-header h2,
.panel-header h3 {
    margin: 0;
    font-weight: 600;
    color: #e3ecff;
}

.panel-block {
    margin-top: 28px;
    padding: 22px;
    border-radius: 16px;
    background: rgba(12, 19, 32, 0.7);
    border: 1px solid rgba(120, 150, 255, 0.2);
}

.list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.placeholder {
    margin: 0;
    color: #90a6d8;
}

.report-card {
    border: 1px солid rgba(120, 150, 255, 0.25);
    border-radius: 16px;
    padding: 18px;
    margin-bottom: 16px;
    background: rgba(20, 30, 48, 0.78);
    box-shadow: 0 12px 32px rgba(4, 8, 20, 0.35);
}

.report-card header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    gap: 12px;
    color: #d9e4ff;
}

.report-card header span {
    font-size: 0.85rem;
    color: #90a5cc;
}

.report-card p {
    margin: 6px 0;
    font-size: 0.95rem;
    color: #c8d8ff;
}

.report-card .actions {
    display: flex;
    gap: 12px;
    margin-top: 14px;
}

.report-card .actions button {
    flex: 1 1 0;
}

.report-media {
    margin: 12px 0 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.report-preview {
    max-width: 100%;
    border-radius: 12px;
    border: 1px solid rgba(120, 150, 255, 0.25);
    box-shadow: 0 10px 24px rgba(4, 8, 20, 0.35);
}

.report-media figcaption {
    font-size: 0.85rem;
    color: #90a6d8;
}

.report-download {
    margin: 12px 0 0;
}

.download-link {
    color: #86b7ff;
    text-decoration: none;
    font-weight: 600;
}

.download-link:hover {
    text-decoration: underline;
}

.hidden {
    display: none;
}

.logs-container {
    max-height: calc(1.9rem * 10);
    height: calc(1.9rem * 10);
    overflow-y: scroll;
    padding-right: 4px;
    scrollbar-width: thin;
    scrollbar-color: #3f6bff rgba(18, 26, 45, 0.65);
}

.logs-container::-webkit-scrollbar {
    width: 10px;
}

.logs-container::-webkit-scrollbar-track {
    background: rgba(12, 20, 38, 0.8);
    border-radius: 12px;
}

.logs-container::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #4a6bff 0%, #3aa0ff 100%);
    border-radius: 12px;
    border: 2px solid rgba(12, 20, 38, 0.9);
}

.logs-container::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5173ff 0%, #48afff 100%);
}

#logs-list li {
    margin: 4px 0;
    line-height: 1.4;
}

.challenges-list {
    display: grid;
    gap: 16px;
}

.challenge-card {
    border: 1px solid rgba(120, 150, 255, 0.25);
    border-radius: 16px;
    padding: 18px;
    background: rgba(20, 30, 48, 0.78);
    box-shadow: 0 10px 26px rgba(4, 8, 20, 0.28);
}

.challenge-card header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    color: #d9e4ff;
    margin-bottom: 12px;
}

.challenge-card header span {
    font-size: 0.85rem;
    color: #86b7ff;
}

.challenge-card.inactive {
    opacity: 0.65;
}

.challenge-card p {
    margin: 6px 0;
    color: #c8d8ff;
}

.challenge-card .meta {
    font-size: 0.9rem;
    color: #90a6d8;
}

.challenge-card .actions {
    margin-top: 14px;
}