:root {
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --border-glow: rgba(34, 197, 94, 0.2);
    --border-accent: #22c55e;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #22c55e;
    --accent-glow: rgba(34, 197, 94, 0.4);
    --accent-hover: #4ade80;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: 'Outfit', 'Noto Sans Thai', sans-serif;
    min-height: 100vh;
    padding: 1.5rem;
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Header styling */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 1rem;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-icon {
    font-size: 1.75rem;
    color: var(--accent);
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-main {
    font-weight: 700;
    font-size: 1.15rem;
}

.brand-sub {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.back-hub-btn {
    color: var(--text-primary);
    text-decoration: none;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
}

.back-hub-btn:hover {
    background: var(--accent-glow);
    border-color: var(--accent);
}

/* Grid Layout */
.app-main-grid {
    display: grid;
    grid-template-columns: 450px 1fr;
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .app-main-grid {
        grid-template-columns: 1fr;
    }
}

.panel-card {
    background-color: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 1rem;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.panel-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.panel-subtitle {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Form Styles */
.panel-section {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.field-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-textarea, .form-input {
    width: 100%;
    background-color: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.form-textarea:focus, .form-input:focus {
    outline: none;
    border-color: var(--border-accent);
    box-shadow: 0 0 10px var(--border-glow);
}

.accordion-section {
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 0.5rem;
    overflow: hidden;
    margin-bottom: 1rem;
}

.accordion-trigger {
    width: 100%;
    background: rgba(255, 255, 255, 0.02);
    border: none;
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.2s;
}

.accordion-trigger:hover {
    background: rgba(255, 255, 255, 0.05);
}

.accordion-content {
    display: none;
    padding: 1rem;
    background: rgba(15, 23, 42, 0.3);
}

.field-help {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    line-height: 1.3;
}

.submit-btn {
    width: 100%;
    background-color: var(--accent);
    color: #000;
    border: none;
    padding: 0.85rem;
    border-radius: 0.5rem;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.submit-btn:hover:not(:disabled) {
    background-color: var(--accent-hover);
    box-shadow: 0 0 15px var(--accent-glow);
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Output Board */
.response-board {
    background-color: rgba(15, 23, 42, 0.4);
    border: 1px dashed rgba(255, 255, 255, 0.1);
    border-radius: 0.75rem;
    padding: 2rem;
    min-height: 250px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.empty-state {
    text-align: center;
    max-width: 400px;
}

.empty-icon {
    font-size: 2.5rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.empty-state h3 {
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.empty-state p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.loading-state {
    text-align: center;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255,255,255,0.1);
    border-left-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.output-content {
    align-self: flex-start;
    width: 100%;
    font-size: 0.95rem;
    line-height: 1.6;
}

.output-content h1 { font-size: 1.5rem; margin-bottom: 1rem; color: var(--accent); border-bottom: 1px solid rgba(255, 255, 255, 0.1); padding-bottom: 0.5rem; }
.output-content h2 { font-size: 1.2rem; margin-top: 1.5rem; margin-bottom: 0.75rem; }
.output-content blockquote { border-left: 3px solid var(--accent); padding-left: 1rem; margin: 1rem 0; color: var(--text-secondary); font-style: italic; background: rgba(255,255,255,0.02); padding: 0.5rem 1rem; }
.output-content strong { color: var(--accent-hover); }

/* Affiliates Cards */
.affiliate-section {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 1.5rem;
}

.affiliate-title {
    font-size: 1rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.affiliate-grid {
    display: flex;
    gap: 1.5rem;
    align-items: stretch;
}

@media (max-width: 768px) {
    .affiliate-grid {
        flex-direction: column;
    }
    .aff-card-divider {
        display: none;
    }
}

.affiliate-card {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.aff-badge {
    background: var(--accent-glow);
    color: var(--accent-hover);
    padding: 0.25rem 0.5rem;
    border-radius: 0.25rem;
    font-size: 0.7rem;
    align-self: flex-start;
    font-weight: 700;
}

.aff-title {
    font-size: 0.95rem;
    font-weight: 600;
}

.aff-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
    flex-grow: 1;
}

.aff-link-btn {
    text-decoration: none;
    color: var(--accent);
    font-size: 0.8rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    margin-top: 0.5rem;
    transition: color 0.2s;
}

.aff-link-btn:hover {
    color: var(--accent-hover);
}

.aff-card-divider {
    width: 1px;
    background-color: rgba(255, 255, 255, 0.05);
}

.hidden {
    display: none !important;
}