:root {
    --bg: #eef9fc;
    --surface: #ffffff;
    --surface-soft: #f3fcfe;
    --line: #d7edf3;
    --line-strong: #b9e6f0;
    --text: #111827;
    --muted: #607184;
    --primary: #1ec9e8;
    --primary-soft: #e8fbfe;
    --accent: #1ec9e8;
    --success-bg: #e8fbfe;
    --success-text: #0f8ca3;
    --neutral-bg: #eef5f7;
    --neutral-text: #5f6f7f;
    --shadow: 0 18px 40px rgba(9, 21, 36, 0.08);
    --tenant-accent-custom: #1ec9e8;
    --radius-sm: 4px;
    --radius-md: 4px;
    --radius-lg: 4px;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    font-family: "Manrope", "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at top left, rgba(30, 201, 232, 0.16), transparent 28%),
        radial-gradient(circle at top right, rgba(17, 24, 39, 0.04), transparent 26%),
        linear-gradient(180deg, #f7fdff 0%, var(--bg) 100%);
    color: var(--text);
}

body {
    min-height: 100vh;
}

.login-body {
    display: grid;
    place-items: center;
    padding: 24px;
}

a {
    color: inherit;
}

input,
select,
textarea,
button,
.btn,
.primary-action-button,
.detail-button,
.settings-input,
.settings-select,
.settings-textarea,
.settings-btn,
.iia-topbar-btn,
.iia-lang-btn,
.iia-sidebar-toggle,
.iia-nav-item,
.iia-nav-subitem,
.iia-nav-company-btn,
.iia-company-toggle,
.iia-company-sublink,
.dashboard-feedback,
.dashboard-feedback-neutral,
.content-card,
.invoice-action-card,
.invoice-meta-box,
.dash-panel,
.dash-metric-card,
.dash-highlight-card,
.dash-pill,
.login-card,
.login-feedback-error,
.login-feedback-neutral {
    border-radius: 4px !important;
}

.top-banner {
    padding: 28px 32px 20px;
    background:
        radial-gradient(circle at top right, rgba(255, 255, 255, 0.1), transparent 24%),
        linear-gradient(135deg, #18324a 0%, var(--tenant-accent-custom) 60%, #557394 100%);
    color: #ffffff;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.brand-wrap {
    display: flex;
    align-items: center;
    gap: 18px;
    max-width: 1440px;
    margin: 0 auto;
}

.brand-wrap-split {
    justify-content: space-between;
    width: 100%;
}

.brand-mark {
    width: 72px;
    height: 72px;
    border-radius: 22px;
    display: grid;
    place-items: center;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--tenant-accent-custom);
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.98) 0%, #e8f0f6 100%);
    box-shadow: 0 10px 24px rgba(14, 27, 40, 0.14);
}

.brand-title {
    margin: 0 0 6px;
    font-size: 31px;
    line-height: 1.08;
    font-weight: 600;
    letter-spacing: -0.03em;
}

.brand-subtitle {
    margin: 0;
    font-size: 14px;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.78);
}

.tenant-panel {
    min-width: 260px;
    padding: 16px 18px;
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 10px 24px rgba(9, 22, 35, 0.12);
}

.tenant-label {
    margin: 0 0 6px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.72);
}

.tenant-name {
    display: block;
    margin-bottom: 10px;
    font-size: 18px;
    font-weight: 700;
}

.tenant-switch-form {
    margin: 0;
}

.tenant-user-meta {
    margin: 0 0 12px;
    font-size: 13px;
    line-height: 1.5;
    color: rgba(255, 255, 255, 0.82);
}

.tenant-logout-form {
    margin: 0 0 12px;
}

.tenant-logout-button {
    width: 100%;
}

.tenant-select {
    width: 100%;
}

.tenant-color-input {
    width: 100%;
    min-height: 46px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #ffffff;
    padding: 6px;
}

.tenant-hint {
    margin: 0;
    font-size: 13px;
    line-height: 1.45;
    color: var(--muted);
}

.tenant-textarea {
    width: 100%;
    min-height: 110px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #ffffff;
    color: var(--text);
    padding: 12px 14px;
    resize: vertical;
}

.top-nav {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    padding: 14px 32px;
    background: rgba(255, 255, 255, 0.84);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
}

.nav-item {
    text-decoration: none;
    padding: 10px 14px;
    border-radius: 999px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 600;
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.nav-item:hover,
.nav-item.active {
    background: var(--primary-soft);
    color: var(--tenant-accent-custom);
    transform: translateY(-1px);
}

.hidden {
    display: none;
}

@media (max-width: 640px) {
    .top-banner,
    .top-nav,
    .layout-shell {
        padding-left: 18px;
        padding-right: 18px;
    }

    .brand-wrap {
        align-items: flex-start;
    }

    .brand-mark {
        width: 56px;
        height: 56px;
        border-radius: 16px;
    }

    .brand-title {
        font-size: 24px;
    }

    .top-nav {
        gap: 8px;
    }

    .nav-item {
        font-size: 13px;
    }
}