:root {
    --primary-color: #8B5A3C;
    --primary-light: #A2704E;
    --primary-dark: #6F442A;
    --primary-soft: rgba(139, 90, 60, 0.08);
    --primary-mid: rgba(139, 90, 60, 0.12);
    --background-color: #FFFFFF;
    --surface-color: #F8F6F2;
    --surface-elevated: #FFFFFF;
    --border-color: #EBE3DA;
    --border-light: #F0EAE3;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.03), 0 1px 2px rgba(0, 0, 0, 0.02);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.03), 0 2px 4px rgba(0, 0, 0, 0.02);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.05), 0 4px 8px rgba(0, 0, 0, 0.03);
    --shadow-hover: 0 12px 28px -8px rgba(100, 70, 40, 0.12);
    --text-primary: #2C241A;
    --text-secondary: #6B5A4A;
    --text-tertiary: #9B8B7A;
    --transition-default: all 0.2s cubic-bezier(0.2, 0.9, 0.4, 1.1);
    --success-color: #2E7D32;
    --warning-color: #ED6C02;
    --info-color: #0288D1;
}


.analysis-container {
    max-width: 900px;
    margin: 32px auto;
    padding: 32px;
    background: var(--surface-elevated);
    border-radius: 28px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-default);
}

.analysis-container:hover {
    box-shadow: var(--shadow-md);
}


.analysis-title {
    text-align: center;
    font-size: clamp(28px, 6vw, 36px);
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.pas-sub {
    text-align: center;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--primary-soft);
    display: inline-block;
    width: auto;
    margin-left: auto;
    margin-right: auto;
}

.analysis-info {
    text-align: center;
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
    padding: 16px 20px;
    background: var(--surface-color);
    border-radius: 20px;
    border: 1px solid var(--border-color);
}


.pas-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 28px;
}

.pas-info p {
    background: var(--surface-color);
    padding: 12px 20px;
    border-radius: 16px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    border-right: 3px solid var(--primary-color);
    margin: 0;
}

.pas-info a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-default);
    padding: 2px 8px;
    border-radius: 8px;
    background: var(--primary-soft);
}

.pas-info a:hover {
    background: var(--primary-mid);
    color: var(--primary-dark);
}


.analysis-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.analysis-form textarea {
    width: 100%;
    padding: 16px 20px;
    font-size: 1rem;
    font-family: inherit;
    border: 1.5px solid var(--border-color);
    border-radius: 20px;
    background: var(--surface-color);
    color: var(--text-primary);
    transition: var(--transition-default);
    resize: vertical;
    min-height: 160px;
    line-height: 1.6;
}

.analysis-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--surface-elevated);
    box-shadow: 0 0 0 3px var(--primary-soft);
}

.analysis-form textarea::placeholder {
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.submit-btn {
    padding: 14px 28px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 48px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-default);
    box-shadow: var(--shadow-sm);
    letter-spacing: 0.3px;
}

.submit-btn:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}


.results-container {
    margin-top: 32px;
    animation: fadeInUp 0.4s ease-out;
}

.results-container h2 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--primary-color);
    display: inline-block;
}


.results-list {
    list-style: none;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 12px;
    margin-bottom: 28px;
}

.results-list li {
    background: var(--surface-color);
    padding: 14px 18px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition-default);
}

.results-list li:hover {
    transform: translateY(-2px);
    border-color: var(--primary-light);
    box-shadow: var(--shadow-sm);
}

.results-list li a {
    text-decoration: none;
    display: block;
}

.results-list li strong {
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 650;
}

.results-list li a strong + * {
    color: var(--text-secondary);
    font-size: 0.85rem;
    display: block;
    margin-top: 6px;
}


.ai-response {
    background: var(--surface-color);
    border-radius: 20px;
    padding: 24px;
    margin-top: 8px;
    border: 1px solid var(--border-color);
    transition: var(--transition-default);
}

.ai-response h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-response h3::before {
    content: "✨";
    font-size: 1.2rem;
}

.ai-response p {
    line-height: 1.8;
    font-size: 0.95rem;
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-word;
}


.copy-btn {
    margin-top: 20px;
    padding: 8px 20px;
    background: transparent;
    color: var(--primary-color);
    border: 1.5px solid var(--border-color);
    border-radius: 40px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition-default);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.copy-btn:hover {
    background: var(--primary-soft);
    border-color: var(--primary-light);
    transform: translateY(-1px);
}

.copy-feedback {
    margin-top: 10px;
    font-size: 0.8rem;
    color: var(--success-color);
    display: none;
}


.version-info {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-align: center;
    margin-top: 20px;
    padding: 12px;
    background: var(--surface-color);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}


.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(8px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1400;
    flex-direction: column;
    gap: 16px;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.loading-overlay p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 8px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.animate__fadeInDown {
    animation: fadeInDown 0.4s ease-out;
}

.animate__fadeIn {
    animation: fadeIn 0.5s ease-out;
}

.animate__fadeInUp {
    animation: fadeInUp 0.4s ease-out;
}

@media (max-width: 768px) {
    .analysis-container {
        margin: 20px 16px;
        padding: 24px 20px;
        border-radius: 24px;
    }

    .analysis-title {
        font-size: 28px;
    }

    .analysis-info {
        font-size: 0.85rem;
        padding: 12px 16px;
    }

    .pas-info p {
        font-size: 0.8rem;
        padding: 10px 16px;
    }

    .results-list {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .ai-response {
        padding: 18px;
    }

    .ai-response p {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .analysis-container {
        margin: 12px 12px;
        padding: 20px 16px;
        border-radius: 20px;
    }

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

    .pas-sub {
        font-size: 0.85rem;
    }

    .analysis-form textarea {
        padding: 14px 16px;
        font-size: 0.9rem;
        min-height: 130px;
    }

    .submit-btn {
        padding: 12px 24px;
        font-size: 0.9rem;
    }

    .results-container h2 {
        font-size: 1.1rem;
    }

    .results-list li {
        padding: 12px 14px;
    }

    .ai-response h3 {
        font-size: 1rem;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}