/* ============================================================
   ai-summarizer.css
   Scoped styles for /ai-summarizer.php
   Does NOT override global.css
   ============================================================ */

/* ── Hero ──────────────────────────────────────────────────── */
.ais-hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 60%, #6366f1 100%);
    padding: 72px 0 80px;
    text-align: center;
    color: #fff;
}

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

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

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

.ais-orb--1 {
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, #a78bfa, transparent 70%);
    top: -120px;
    left: -80px;
}

.ais-orb--2 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #818cf8, transparent 70%);
    bottom: -100px;
    right: -60px;
    animation-delay: -4s;
}

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

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

.ais-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);
}

.ais-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);
}

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

.ais-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 */
.ais-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);
}

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

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

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

/* ── Modes Tabs ─────────────────────────────────────────────── */
.ais-tool {
    padding: 60px 0 48px;
    background: var(--color-bg);
}

.ais-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;
}

/* Modes tab bar */
.ais-modes-bar {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 16px 24px 0;
    border-bottom: 1px solid var(--color-border-light);
    flex-wrap: wrap;
}

.ais-modes-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-muted);
    margin-right: 8px;
    white-space: nowrap;
}

.ais-mode-tab {
    padding: 8px 16px;
    border: none;
    background: transparent;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all 0.2s;
    white-space: nowrap;
    font-family: inherit;
}

.ais-mode-tab:hover {
    color: var(--color-primary, #6366f1);
}

.ais-mode-tab.active {
    color: var(--color-primary, #6366f1);
    border-bottom-color: var(--color-primary, #6366f1);
}

/* ── Split Layout ───────────────────────────────────────────── */
.ais-split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 480px;
}

.ais-split-left {
    padding: 24px;
    border-right: 1px solid var(--color-border-light);
    display: flex;
    flex-direction: column;
}

.ais-split-right {
    padding: 24px;
    background: #fafbfc;
    border-radius: 0 var(--radius-xl) var(--radius-xl) 0;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow-y: auto;
}

/* Vertical / Stacked Layout Override (Dashboard) */
.ais-layout-stacked {
    grid-template-columns: 1fr !important;
    min-height: auto !important;
}

.ais-layout-stacked .ais-split-left {
    border-right: none !important;
    border-bottom: 1px solid var(--color-border-light) !important;
    padding: 32px !important;
}

.ais-layout-stacked .ais-split-right {
    border-radius: 0 0 var(--radius-xl) var(--radius-xl) !important;
    min-height: 400px !important;
    padding: 32px !important;
}

@media (max-width: 900px) {
    .ais-split-layout {
        grid-template-columns: 1fr;
    }
    .ais-split-left {
        padding: 16px;
        border-right: none;
        border-bottom: 1px solid var(--color-border-light);
    }
    .ais-split-right {
        padding: 16px;
        border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    }
}

/* ── Editor Header ──────────────────────────────────────────── */
.ais-editor-header {
    display: flex;
    justify-content: flex-end;
    padding-bottom: 8px;
}

.ais-clear-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
}

.ais-clear-btn:hover {
    background: rgba(239, 68, 68, 0.08);
    color: #ef4444 !important;
}

/* ── Editor Wrapper ─────────────────────────────────────────── */
.ais-editor-wrapper {
    background: transparent;
    border: none;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    position: relative;
    box-shadow: none;
    margin-bottom: 0;
}

.ais-textarea {
    flex-grow: 1;
    width: 100%;
    border: none;
    resize: none;
    padding: 16px 24px 80px 24px;
    font-size: 16px;
    color: var(--color-text-primary, #1e293b);
    background: transparent;
    outline: none;
    font-family: inherit;
    line-height: 1.6;
    height: 100%;
    min-height: 360px;
}

.ais-textarea::placeholder {
    color: var(--color-text-muted, #94a3b8);
}

.ais-editor-actions {
    margin-top: 12px;
    margin-left: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    z-index: 10;
}

.ais-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: 1px solid var(--color-primary, #6366f1);
    border-radius: 20px;
    background: #ffffff;
    color: var(--color-primary, #6366f1);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.ais-action-btn svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
    stroke-width: 2.5;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.ais-action-btn:hover {
    background: #f8fafc;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

@media (max-width: 600px) {
    .ais-editor-actions {
        position: relative;
        top: 0;
        left: 0;
        margin: 16px 24px 0 24px;
        z-index: 10;
    }
    .ais-textarea {
        padding-top: 16px !important;
        min-height: 300px;
    }
}

/* ── Editor Footer ──────────────────────────────────────────── */
.ais-editor-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    background: #fff;
    border-top: 1px solid var(--color-border-light, #e2e8f0);
}

.ais-char-count {
    color: #64748b;
    font-size: 14px;
}

/* ── Summarize Button ───────────────────────────────────────── */
.ais-summarize-btn {
    appearance: none;
    -webkit-appearance: none;
    background: var(--color-primary, #6366f1) !important;
    color: #ffffff !important;
    border: none !important;
    border-radius: 24px !important;
    padding: 10px 24px !important;
    font-size: 15px !important;
    font-weight: 700 !important;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3) !important;
    line-height: 1;
    width: auto !important;
    min-width: 130px !important;
    min-height: 42px !important;
    flex-shrink: 0 !important;
}

.ais-summarize-btn:hover {
    background: #4f46e5 !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(99, 102, 241, 0.35) !important;
}

.ais-summarize-btn:active {
    transform: scale(0.98);
}

.ais-btn-loading[hidden] {
    display: none !important;
}

.ais-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-top-color: #fff;
    border-radius: 50%;
    display: inline-block;
    animation: aisSpin 0.75s linear infinite;
}

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

/* ── Right Panel Placeholder ────────────────────────────────── */
.ais-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;
}

.ais-placeholder-state > svg {
    margin-bottom: 16px;
    stroke: var(--color-border);
}

/* ── Error / alerts ─────────────────────────────────────────── */
.ais-error-banner {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: var(--radius-md);
    padding: var(--space-4) var(--space-5);
    color: #dc2626;
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    margin-bottom: var(--space-5);
}

/* ── Signup CTA ─────────────────────────────────────────────── */
.ais-signup-cta {
    text-align: center;
    padding: 40px var(--space-6);
    background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
    border-radius: var(--radius-lg);
    border: 2px dashed #c4b5fd;
    margin-top: var(--space-6);
}

.ais-signup-cta__icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
}

.ais-signup-cta h3 {
    font-size: var(--text-xl);
    font-weight: var(--weight-bold);
    margin-bottom: var(--space-3);
    color: var(--color-text-primary);
}

.ais-signup-cta p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
    max-width: 420px;
    margin-inline: auto;
}

.ais-login-link {
    display: block;
    margin-top: var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    text-decoration: underline;
}

.ais-login-link:hover {
    color: var(--color-primary);
}

/* ── Results ────────────────────────────────────────────────── */
.ais-results {
    animation: aisFadeUp 0.4s ease both;
}

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

.ais-topics-grid {
    display: grid;
    gap: var(--space-4);
}

/* Summary result card */
.ais-topic-card {
    display: flex;
    flex-direction: column;
    background: #ffffff;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    animation: aisFadeUp 0.35s ease both;
}

.ais-topic-card:hover {
    border-color: var(--color-border);
}

.ais-topic-card__header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--color-border-light);
}

.ais-topic-card__text {
    font-size: 15px;
    font-weight: 400;
    color: var(--color-text-primary);
    line-height: 1.7;
    white-space: pre-wrap;
}

.ais-topic-card__copy {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 14px;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: var(--weight-semibold);
    color: var(--color-text-secondary);
    background: transparent;
    cursor: pointer;
    font-family: var(--font-sans);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.ais-topic-card__copy:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
    background: rgba(99, 102, 241, 0.06);
}

.ais-topic-card__copy.copied {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(16, 185, 129, 0.08);
}

/* ── Info row ───────────────────────────────────────────────── */
.ais-info-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
    max-width: 860px;
    margin: var(--space-10) auto 0;
}

.ais-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 var(--transition-base), box-shadow var(--transition-base);
}

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

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

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

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

/* ── How it works ──────────────────────────────────────────── */
.ais-how {
    padding: 60px 0 80px;
    background: var(--color-surface-alt);
    text-align: center;
}

.ais-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    margin-top: var(--space-10);
    flex-wrap: wrap;
}

.ais-step {
    flex: 1;
    min-width: 180px;
    max-width: 240px;
}

.ais-step__num {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--gradient-primary);
    color: #fff;
    font-size: var(--text-xl);
    font-weight: var(--weight-extrabold);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-4);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35);
}

.ais-step h3 {
    font-size: var(--text-base);
    font-weight: var(--weight-bold);
    margin-bottom: var(--space-2);
}

.ais-step p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.ais-step__arrow {
    font-size: 1.5rem;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

/* ── FAQ Section ─────────────────────────────────────────────── */
.ais-faq {
    padding: 72px 0 88px;
    background: white;
}

.ais-faq .section-label {
    display: block;
    text-align: center;
    margin-bottom: var(--space-3);
}

.ais-faq .section-title {
    text-align: center;
    margin-bottom: var(--space-12);
}

.ais-faq__list {
    max-width: 760px;
    margin: 0 auto;
}

.ais-faq__item {
    border-bottom: 1px solid var(--color-border-light);
}

.ais-faq__question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 0;
    background: none;
    border: none;
    font-size: var(--text-base);
    font-weight: var(--weight-semibold);
    color: var(--color-text-primary);
    cursor: pointer;
    text-align: left;
    font-family: inherit;
    transition: color 0.2s;
}

.ais-faq__question:hover {
    color: var(--color-primary);
}

.ais-faq__icon {
    flex-shrink: 0;
    color: var(--color-text-muted);
    transition: transform 0.25s;
}

.ais-faq__item--open .ais-faq__icon {
    transform: rotate(180deg);
    color: var(--color-primary);
}

.ais-faq__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
}

.ais-faq__item--open .ais-faq__answer {
    max-height: 400px;
}

.ais-faq__answer p {
    padding-bottom: 20px;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ── Explore section ────────────────────────────────────────── */
.ais-explore {
    padding: 72px 0 88px;
    background: var(--color-surface-alt);
}

.ais-explore__header {
    text-align: center;
    margin-bottom: var(--space-10);
}

.ais-explore__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--space-4);
}

.ais-explore__card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-5) var(--space-4);
    text-align: center;
    text-decoration: none;
    color: var(--color-text-primary);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast);
}

.ais-explore__card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-primary);
}

.ais-explore__icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.ais-explore__icon svg {
    width: 24px;
    height: 24px;
}

.ais-explore__name {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
    .ais-info-row {
        grid-template-columns: 1fr;
    }
    .ais-step__arrow {
        display: none;
    }
    .ais-hero__title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .ais-hero {
        padding: 52px 0 60px;
    }
    .ais-topic-card {
        flex-wrap: wrap;
    }
    .ais-topic-card__copy {
        width: 100%;
        justify-content: center;
    }
}

/* ── Dashboard / Stacked layout mobile fixes ─────────────────── */

/* Make modes bar scrollable horizontally on small screens */
.ais-modes-bar {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
}
.ais-modes-bar::-webkit-scrollbar {
    display: none; /* Chrome/Safari */
}

@media (max-width: 640px) {
    /* Reduce stacked layout panel padding */
    .ais-layout-stacked .ais-split-left {
        padding: 16px !important;
    }
    .ais-layout-stacked .ais-split-right {
        padding: 16px !important;
        min-height: 260px !important;
    }

    /* Reduce textarea height inside dashboard */
    .ais-layout-stacked .ais-textarea {
        min-height: 200px !important;
        padding: 12px 16px 60px 16px !important;
        font-size: 15px !important;
    }

    /* Editor actions margin correction */
    .ais-layout-stacked .ais-editor-actions {
        margin-left: 0 !important;
        margin-top: 8px !important;
    }

    /* Stack the footer: char count above, button full-width below */
    .ais-editor-footer {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 12px 16px;
    }

    .ais-char-count {
        text-align: center;
        font-size: 13px;
    }

    .ais-summarize-btn {
        width: 100% !important;
        min-width: unset !important;
        justify-content: center;
    }

    /* Compact placeholder */
    .ais-placeholder-state {
        padding: 24px 16px;
    }

    /* Mode tabs — tighter spacing on mobile */
    .ais-modes-bar {
        padding: 12px 16px 0;
        gap: 2px;
        flex-wrap: nowrap; /* enforce horizontal scroll instead of wrap */
    }

    .ais-mode-tab {
        padding: 8px 12px;
        font-size: 13px;
    }

    .ais-modes-label {
        font-size: 13px;
        flex-shrink: 0;
    }

    /* Result cards */
    .ais-topic-card {
        padding: 14px;
    }

    .ais-topic-card__copy {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 400px) {
    .ais-layout-stacked .ais-split-left {
        padding: 12px !important;
    }
    .ais-layout-stacked .ais-split-right {
        padding: 12px !important;
    }
    .ais-editor-footer {
        padding: 10px 12px;
    }
}