.brand {
    display: flex;
    gap: 12px;
    align-items: center;
}

.brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
    color: #07101d;
    font-weight: 900;
}

.brand-title {
    font-weight: 800;
    letter-spacing: -0.02em;
}

.brand-subtitle {
    font-size: 13px;
    color: var(--muted);
    margin-top: 2px;
}

.topbar-pill,
.topbar-link,
.model-pill,
.warning-pill {
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.07);
    color: var(--muted-2);
    padding: 10px 14px;
    border-radius: 999px;
    font-size: 14px;
    text-decoration: none;
}

.topbar-link:hover {
    color: #07101d;
    background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
}

.hero-card,
.preview-dashboard,
.analysis-card,
.card-dark,
.info-card,
.stat-card,
.report-hero,
.confirm-panel,
.final-card {
    border: 1px solid var(--border);
    background: var(--card);
    backdrop-filter: blur(18px);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.hero-badge {
    display: inline-flex;
    padding: 9px 14px;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(146,254,157,0.16), rgba(0,201,255,0.14));
    border: 1px solid rgba(146, 254, 157, 0.28);
    color: #c7ffde;
    font-weight: 700;
    font-size: 14px;
}

.btn,
.submit-button {
    border: none;
    cursor: pointer;
    text-decoration: none;
    font-weight: 800;
    border-radius: 18px;
    transition: 0.18s ease;
    font-family: inherit;
}

.btn {
    padding: 14px 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary,
.submit-button {
    color: #07101d;
    background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
    box-shadow: 0 18px 40px rgba(0, 201, 255, 0.2);
}

.btn-secondary {
    color: var(--text);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid var(--border);
}

.btn:hover,
.submit-button:hover {
    transform: translateY(-2px);
}

.submit-button {
    width: 100%;
    min-height: 62px;
    font-size: 18px;
    display: flex;
    justify-content: center;
    gap: 10px;
    align-items: center;
}

.submit-button:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

.alert {
    margin: 24px 0;
    padding: 16px 18px;
    border-radius: 18px;
    background: rgba(255, 92, 122, 0.15);
    border: 1px solid rgba(255, 92, 122, 0.35);
    color: #ffd6de;
}

.warning-alert {
    background: rgba(255, 209, 102, 0.12);
    border-color: rgba(255, 209, 102, 0.28);
    color: #fff2c7;
}

.section-heading {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin: 10px 0 18px;
}

.section-heading span {
    width: 38px;
    height: 38px;
    flex: none;
    display: grid;
    place-items: center;
    border-radius: 14px;
    color: #07101d;
    background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
    font-weight: 900;
}

.upload-zone {
    display: grid;
    place-items: center;
    text-align: center;
    min-height: 210px;
    padding: 28px;
    border-radius: 24px;
    border: 1px dashed rgba(146, 254, 157, 0.45);
    background:
        linear-gradient(135deg, rgba(146,254,157,0.09), rgba(0,201,255,0.08)),
        rgba(255,255,255,0.03);
    cursor: pointer;
    transition: 0.18s ease;
}

.upload-zone:hover {
    transform: translateY(-2px);
    border-color: rgba(0, 201, 255, 0.72);
}

.upload-zone input {
    display: none;
}

.upload-icon {
    width: 64px;
    height: 64px;
    display: grid;
    place-items: center;
    border-radius: 22px;
    font-size: 34px;
    color: #07101d;
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
    margin-bottom: 18px;
}

.switch-row {
    margin: 16px 0;
    display: grid;
    grid-template-columns: auto auto 1fr;
    gap: 14px;
    align-items: center;
    padding: 16px;
    border-radius: 20px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
}

.switch-row input {
    display: none;
}

.switch-fake {
    width: 52px;
    height: 30px;
    border-radius: 999px;
    background: rgba(255,255,255,0.15);
    position: relative;
    transition: 0.2s;
}

.switch-fake::after {
    content: "";
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: white;
    position: absolute;
    top: 4px;
    left: 4px;
    transition: 0.2s;
}

.switch-row input:checked + .switch-fake {
    background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
}

.switch-row input:checked + .switch-fake::after {
    left: 26px;
    background: #07101d;
}

textarea {
    width: 100%;
    border: 1px solid var(--border);
    outline: none;
    padding: 18px;
    border-radius: 20px;
    background: rgba(255,255,255,0.06);
    color: var(--text);
    font-family: inherit;
    font-size: 16px;
    line-height: 1.55;
    resize: vertical;
}

textarea:focus {
    border-color: rgba(0,201,255,0.72);
    box-shadow: 0 0 0 4px rgba(0,201,255,0.08);
}

.instruction-examples {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin: 14px 0 28px;
}

.instruction-examples button {
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.06);
    color: var(--muted-2);
    border-radius: 999px;
    padding: 10px 14px;
    cursor: pointer;
    font-family: inherit;
}

.instruction-examples button:hover {
    color: #07101d;
    background: linear-gradient(135deg, var(--accent-a), var(--accent-b));
}

.demo-dataset-box {
    display: none;
    margin: 0 0 18px;
    padding: 18px;
    border-radius: 20px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border);
}

.demo-dataset-box label {
    display: block;
    margin-bottom: 10px;
    color: var(--muted-2);
    font-weight: 700;
}

.select-input {
    width: 100%;
    border: 1px solid var(--border);
    outline: none;
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(5, 9, 16, 0.75);
    color: var(--text);
    font-family: inherit;
    font-size: 15px;
}

.select-input:focus {
    border-color: rgba(0,201,255,0.72);
    box-shadow: 0 0 0 4px rgba(0,201,255,0.08);
}

.demo-dataset-box p {
    margin: 10px 0 0;
    color: var(--muted);
    line-height: 1.5;
}