/* ============================================================
   chat-pdf.css
   Scoped styles for /chat-pdf.php
   Does NOT override global.css
   ============================================================ */

/* ── Hero ──────────────────────────────────────────────────── */
.pdfc-hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 60%, #6366f1 100%);
    padding: 72px 0 80px;
    text-align: center;
    color: #fff;
}

@media (max-width: 600px) {
    .pdfc-hero {
        padding: 48px 0 !important;
    }
}

.pdfc-hero__orbs {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.pdfc-orb {
    position: absolute;
    border-radius: 50%;
    opacity: 0.18;
    animation: orbFloat 8s ease-in-out infinite alternate;
}

.pdfc-orb--1 {
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, #818cf8, transparent 70%);
    top: -120px;
    left: -80px;
}

.pdfc-orb--2 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #c084fc, transparent 70%);
    bottom: -100px;
    right: -60px;
    animation-delay: -4s;
}

@keyframes orbFloat {
    from {
        transform: translate(0, 0) scale(1);
    }
    to {
        transform: translate(20px, -20px) scale(1.06);
    }
}

.pdfc-hero__inner {
    position: relative;
    z-index: 1;
}

.pdfc-hero__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-full);
    padding: 6px 18px;
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--space-5);
}

.pdfc-hero__title {
    font-family: var(--font-display);
    font-size: clamp(2.4rem, 6vw, 3.8rem);
    font-weight: var(--weight-black);
    color: #fff;
    line-height: 1.1;
    margin-bottom: var(--space-5);
}

.pdfc-hero__title .highlight {
    background: linear-gradient(90deg, #fde68a, #fbbf24);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.pdfc-hero__subtitle {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: rgba(255, 255, 255, 0.88);
    max-width: 600px;
    margin: 0 auto var(--space-6);
    line-height: 1.65;
}

/* Usage badge */
.pdfc-usage-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.18);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    padding: 7px 18px;
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.92);
    font-weight: var(--weight-medium);
}

.pdfc-usage-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #fcd34d;
    display: inline-block;
    animation: pulse 1.8s ease-in-out infinite;
}

.pdfc-usage-dot--green {
    background: #34d399;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(0.85);
    }
}

/* ── Tool Card ──────────────────────────────────────────────── */
.pdfc-tool {
    padding: 60px 0 48px;
    background: var(--color-bg);
}

.pdfc-card {
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border-light);
    padding: 0;
    max-width: 1200px;
    margin: 0 auto;
}

/* Split Layout */
.pdfc-split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 550px;
}

.pdfc-split-left {
    padding: 32px;
    border-right: 1px solid var(--color-border-light);
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.pdfc-split-right {
    padding: 32px;
    background: #fafbfc;
    border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow-y: auto;
    max-height: 700px;
}

@media (max-width: 900px) {
    .pdfc-split-layout {
        grid-template-columns: 1fr;
    }
    .pdfc-split-left {
        padding: 20px;
        border-right: none;
        border-bottom: 1px solid var(--color-border-light);
    }
    .pdfc-split-right {
        padding: 20px;
        border-radius: 0 0 var(--radius-xl) var(--radius-xl);
        max-height: 500px;
    }
    .pdfc-hero__title {
        font-size: 2rem;
    }
}

/* Drag-and-drop Upload Zone */
.pdfc-upload-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 20px;
    text-align: center;
    background: #f8fafc;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.pdfc-upload-zone:hover, .pdfc-upload-zone.dragover {
    border-color: #4f46e5;
    background: #f1f5f9;
}

.pdfc-upload-icon {
    font-size: 2.5rem;
    color: #4f46e5;
}

.pdfc-upload-zone h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin: 0;
}

.pdfc-upload-zone p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin: 0;
}

/* File Preview Box */
.pdfc-preview-box {
    background: #f1f5f9;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.pdfc-preview-info {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.pdfc-preview-icon {
    color: #ef4444;
    flex-shrink: 0;
}

.pdfc-preview-meta {
    min-width: 0;
}

.pdfc-preview-name {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.pdfc-preview-pages {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.pdfc-remove-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    padding: 6px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.pdfc-remove-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

/* Input elements */
.pdfc-question-wrapper {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pdfc-textarea {
    width: 100%;
    height: 100px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 14px;
    font-size: 15px;
    color: var(--color-text-primary);
    background: var(--color-surface);
    resize: none;
    outline: none;
    font-family: inherit;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.pdfc-textarea:focus {
    border-color: #4f46e5;
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.12);
}

.pdfc-editor-footer {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.pdfc-chat-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--gradient-primary, linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%));
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    padding: 12px 24px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, opacity 0.2s;
}

.pdfc-chat-btn:hover {
    transform: translateY(-1px);
    opacity: 0.95;
}

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

/* ── Chat Messages Output ──────────────────────────────────── */
.pdfc-placeholder-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--color-text-muted);
    text-align: center;
    padding: 40px;
    gap: 16px;
}

.pdfc-placeholder-state svg {
    stroke: var(--color-border);
}

.pdfc-chat-messages {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    flex-grow: 1;
}

.pdfc-chat-msg {
    max-width: 85%;
    font-size: var(--text-base);
    line-height: 1.6;
    animation: fadeUp 0.3s ease both;
}

.pdfc-chat-msg--user {
    align-self: flex-end;
    background: #e0e7ff;
    color: #1e1b4b;
    padding: 12px 20px;
    border-radius: 20px 20px 0 20px;
    font-weight: 500;
}

.pdfc-chat-msg--ai {
    align-self: flex-start;
    background: #fff;
    color: var(--color-text-primary);
    padding: 16px 20px;
    border-radius: 20px 20px 20px 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    border: 1px solid var(--color-border-light);
}

.pdfc-msg-copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    margin-top: 10px;
    background: none;
    border: 1px solid var(--color-border);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: var(--text-xs);
    cursor: pointer;
    color: var(--color-text-secondary);
    transition: all 0.2s;
}

.pdfc-msg-copy-btn:hover {
    border-color: #4f46e5;
    color: #4f46e5;
}

/* Spinner and loading states */
.pdfc-loading-bubble {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: #f1f5f9;
    border-radius: 20px;
    width: fit-content;
}

.pdfc-dot-flashing {
    position: relative;
    width: 6px;
    height: 6px;
    border-radius: 5px;
    background-color: #4f46e5;
    color: #4f46e5;
    animation: dotFlashing 1s infinite linear alternate;
    animation-delay: .5s;
}

.pdfc-dot-flashing::before, .pdfc-dot-flashing::after {
    content: '';
    display: inline-block;
    position: absolute;
    top: 0;
}

.pdfc-dot-flashing::before {
    left: -12px;
    width: 6px;
    height: 6px;
    border-radius: 5px;
    background-color: #4f46e5;
    color: #4f46e5;
    animation: dotFlashing 1s infinite alternate;
    animation-delay: 0s;
}

.pdfc-dot-flashing::after {
    left: 12px;
    width: 6px;
    height: 6px;
    border-radius: 5px;
    background-color: #4f46e5;
    color: #4f46e5;
    animation: dotFlashing 1s infinite alternate;
    animation-delay: 1s;
}

@keyframes dotFlashing {
    0% {
        background-color: #4f46e5;
    }
    50%, 100% {
        background-color: #e2e8f0;
    }
}

.pdfc-error-banner {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-md);
    padding: 12px 16px;
    color: #dc2626;
    font-size: var(--text-sm);
    font-weight: 500;
    margin-bottom: 12px;
}

.pdfc-signup-cta {
    text-align: center;
    padding: 30px 20px;
    background: linear-gradient(135deg, #f0f4ff 0%, #faf0ff 100%);
    border-radius: var(--radius-lg);
    border: 2px dashed #c7d2fe;
    margin-bottom: 20px;
}

.pdfc-signup-cta__icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.pdfc-signup-cta h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.pdfc-signup-cta p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: 16px;
}

/* Info row & FAQs */
.pdfc-info-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
    max-width: 1200px;
    margin: var(--space-10) auto 0;
}

.pdfc-info-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    padding: var(--space-6);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: transform 0.2s, box-shadow 0.2s;
}

.pdfc-info-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
}

.pdfc-info-card__icon {
    font-size: 2rem;
    margin-bottom: var(--space-3);
}

.pdfc-info-card h3 {
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    margin-bottom: var(--space-2);
}

.pdfc-info-card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

@media (max-width: 768px) {
    .pdfc-info-row {
        grid-template-columns: 1fr;
    }
}

/* ── Resource Section & Creator Card (EEAT Overview) ────────── */
.aih-resource-section {
    padding: 80px 0;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border-light);
}

.aih-resource-section--alt {
    background: var(--color-surface-alt);
}

.aih-resource-section--white {
    background: #ffffff;
}

.aih-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
    align-items: start;
}

@media (max-width: 900px) {
    .aih-grid-2 {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
}

.aih-creator-card {
    background: #ffffff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    box-shadow: var(--shadow-md);
}

.aih-creator-card__header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.aih-creator-card__avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, #6366f1, #a855f7);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 28px;
    font-weight: 700;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.aih-creator-card__title h2 {
    font-size: var(--text-xl);
    font-weight: var(--weight-bold);
    color: var(--color-text-primary);
    margin: 0;
}

.aih-creator-card__title p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin: 2px 0 0 0;
}

.aih-creator-card__quote {
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
    font-style: italic;
    border-left: 3px solid var(--color-primary);
    padding-left: var(--space-4);
}

.aih-creator-card__text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* ── Why Use ChatPDF Section ─────────────────────────────── */
.pdfc-why-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px var(--space-8);
    margin-top: 20px;
}

.pdfc-why-item {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.pdfc-why-icon {
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pdfc-why-item h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--color-text-primary, #1e293b);
    margin: 0 0 8px 0;
}

.pdfc-why-item p {
    font-size: 14.5px;
    line-height: 1.6;
    color: var(--color-text-secondary, #475569);
    margin: 0;
}

@media (max-width: 900px) {
    .pdfc-why-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px var(--space-6);
    }
}

@media (max-width: 600px) {
    .pdfc-why-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

/* ── FAQ Accordion Section ───────────────────────────────── */
.pdfc-faq {
    padding: 60px 0 80px;
    background: var(--color-surface);
}

.pdfc-faq__inner {
    max-width: 800px;
    margin: 0 auto;
}

.pdfc-faq__list {
    display: flex;
    flex-direction: column;
}

.pdfc-faq-item {
    border-bottom: 1px solid var(--color-border-light);
}

.pdfc-faq-item:first-child {
    border-top: 1px solid var(--color-border-light);
}

.pdfc-faq-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 24px 0;
    font-size: var(--text-base);
    font-weight: var(--weight-medium);
    color: var(--color-text-primary);
    cursor: pointer;
    list-style: none;
    transition: color var(--transition-base);
}

.pdfc-faq-summary::-webkit-details-marker {
    display: none;
}

.pdfc-faq-summary:hover {
    color: var(--color-primary);
}

.pdfc-faq-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    transition: transform 0.3s ease;
}

.pdfc-faq-item[open] .pdfc-faq-icon {
    transform: rotate(180deg);
}

.pdfc-faq-content {
    padding-bottom: 24px;
    font-size: var(--text-base);
    line-height: 1.65;
    color: var(--color-text-secondary);
}