.invoice-page {
    padding-top: 2rem;
    padding-bottom: 3rem;
}

.invoice-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
    gap: 1.5rem;
    align-items: stretch;
    margin-bottom: 1.5rem;
}

.hero-copy {
    padding: 1rem 0;
}

.hero-points {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1rem;
}

.hero-points span {
    display: inline-flex;
    align-items: center;
    padding: 0.55rem 0.85rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text);
    font-size: 0.85rem;
    font-weight: 600;
}

.tool-badge {
    display: inline-flex;
    align-items: center;
    padding: 6px 12px;
    border-radius: 999px;
    background: rgba(244, 197, 66, 0.12);
    border: 1px solid rgba(244, 197, 66, 0.22);
    color: var(--accent);
    font-size: 0.78rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 700;
}

.invoice-hero h1 {
    margin: 14px 0 12px;
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.08;
    max-width: 12ch;
}

.invoice-hero p {
    color: var(--muted);
    max-width: 62ch;
}

.hero-aside {
    padding: 1.4rem;
}

.hero-aside h2 {
    margin: 0 0 1rem;
    font-size: 1.1rem;
}

.hero-checklist {
    margin: 0;
    padding-left: 1.1rem;
    color: var(--muted);
}

.hero-checklist li + li {
    margin-top: 0.7rem;
}

.invoice-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.92fr);
    gap: 1.5rem;
    align-items: start;
}

.invoice-panel,
.preview-panel {
    padding: 1.4rem;
}

.panel-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.panel-head h2 {
    margin: 0.2rem 0 0;
    font-size: 1.35rem;
}

.panel-kicker {
    margin: 0;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.76rem;
    font-weight: 700;
}

.panel-link {
    color: var(--muted);
    font-size: 0.92rem;
}

.panel-link:hover,
.panel-link:focus-visible {
    color: var(--primary);
}

.invoice-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.55rem;
    font-weight: 700;
    color: var(--text);
}

.form-group input {
    width: 100%;
}

.field-hint {
    margin: 0.45rem 0 0;
    font-size: 0.82rem;
    color: var(--muted);
}

.form-status {
    min-height: 48px;
    padding: 0.85rem 1rem;
    border-radius: 14px;
    background: rgba(21, 24, 39, 0.55);
    border: 1px solid transparent;
    color: var(--muted);
}

.form-status[data-state="error"] {
    color: #ffd5d5;
    background: rgba(255, 107, 107, 0.12);
    border-color: rgba(255, 107, 107, 0.35);
}

.form-status[data-state="success"] {
    color: #d7ffe8;
    background: rgba(53, 208, 127, 0.12);
    border-color: rgba(53, 208, 127, 0.35);
}

.button-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.action-button {
    min-width: 170px;
}

.action-button[disabled] {
    cursor: not-allowed;
    opacity: 0.55;
    box-shadow: none;
    transform: none;
}

.is-invalid {
    border-color: var(--danger);
    box-shadow: 0 0 0 2px rgba(255, 107, 107, 0.12);
}

.preview-meta {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.5rem 0.75rem;
    border-radius: 999px;
    background: rgba(91, 107, 255, 0.14);
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 700;
}

.preview-summary {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.85rem;
    margin-bottom: 1rem;
}

.summary-item {
    padding: 0.95rem 1rem;
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border);
}

.summary-item span {
    display: block;
    margin-bottom: 0.35rem;
    color: var(--muted);
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
}

.summary-item strong {
    display: block;
    color: var(--text);
    font-size: 0.96rem;
    line-height: 1.5;
}

.invoice-result {
    margin: 0;
    min-height: 360px;
    padding: 1.25rem;
    border-radius: 18px;
    border: 1px solid var(--border);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent),
        rgba(11, 11, 15, 0.78);
    color: #edf2ff;
    font-family: "Courier New", Courier, monospace;
    font-size: 0.91rem;
    line-height: 1.72;
    white-space: pre-wrap;
    word-break: break-word;
}

.invoice-result.empty {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--muted);
    font-family: "Sora", "Segoe UI", system-ui, sans-serif;
}

@media (max-width: 960px) {
    .invoice-hero,
    .invoice-layout {
        grid-template-columns: 1fr;
    }

    .invoice-hero h1 {
        max-width: none;
    }
}

@media (max-width: 640px) {
    .invoice-page {
        padding-top: 1.25rem;
    }

    .invoice-panel,
    .preview-panel,
    .hero-aside {
        padding: 1.1rem;
    }

    .panel-head {
        flex-direction: column;
    }

    .form-row,
    .button-group {
        grid-template-columns: 1fr;
    }

    .preview-summary {
        grid-template-columns: 1fr;
    }

    .button-group {
        display: grid;
    }

    .action-button {
        width: 100%;
        min-width: 0;
    }

    .invoice-result {
        min-height: 320px;
        padding: 1rem;
        font-size: 0.86rem;
    }
}