/* xBook AI Drawing — Style Sheet v1.0 */
/* Font */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&family=Baloo+2:wght@700;800&display=swap');

/* ─── Variables ─────────────────────────────────── */
:root {
    --xai-primary:    #6C63FF;
    --xai-primary-2:  #8B83FF;
    --xai-secondary:  #FF6584;
    --xai-accent:     #43C9A3;
    --xai-yellow:     #FFD166;
    --xai-blue:       #4CC9F0;

    --xai-bg:         #F8F7FF;
    --xai-surface:    #FFFFFF;
    --xai-surface-2:  #F2F0FF;
    --xai-border:     #E8E5FF;

    --xai-text:       #2D2A5E;
    --xai-text-2:     #6B68A0;
    --xai-text-3:     #A09DC4;

    --xai-radius:     16px;
    --xai-radius-sm:  10px;
    --xai-shadow:     0 4px 24px rgba(108,99,255,.12);
    --xai-shadow-lg:  0 8px 48px rgba(108,99,255,.18);

    --xai-font:       'Nunito', sans-serif;
    --xai-font-title: 'Baloo 2', cursive;
}

/* ─── Reset & Base ──────────────────────────────── */
.xbook-ai-wrap *,
.xbook-ai-wrap *::before,
.xbook-ai-wrap *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
.xbook-ai-wrap {
    font-family: var(--xai-font);
    color: var(--xai-text);
    background: var(--xai-bg);
    border-radius: 24px;
    overflow: hidden;
    max-width: 1200px;
    margin: 0 auto;
    box-shadow: var(--xai-shadow-lg);
}

/* ─── Header ────────────────────────────────────── */
.xai-header {
    background: linear-gradient(135deg, var(--xai-primary) 0%, #9B8FFF 60%, var(--xai-blue) 100%);
    padding: 28px 32px;
    position: relative;
    overflow: hidden;
}
.xai-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Ccircle cx='30' cy='30' r='20'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.xai-header-inner {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.xai-logo {
    display: flex;
    align-items: center;
    gap: 16px;
}
.xai-logo-icon {
    font-size: 40px;
    filter: drop-shadow(0 4px 8px rgba(0,0,0,.2));
    animation: float 3s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-6px); }
}
.xai-title {
    font-family: var(--xai-font-title);
    font-size: 28px;
    font-weight: 800;
    color: #fff;
    text-shadow: 0 2px 12px rgba(0,0,0,.2);
    line-height: 1.1;
}
.xai-subtitle {
    color: rgba(255,255,255,.85);
    font-size: 14px;
    font-weight: 600;
    margin-top: 4px;
}
.xai-badge {
    background: rgba(255,255,255,.2);
    color: #fff;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 700;
    border: 1.5px solid rgba(255,255,255,.3);
    backdrop-filter: blur(8px);
}

/* ─── Main Layout ───────────────────────────────── */
.xai-main {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 0;
    min-height: 600px;
}
.xai-panel {
    padding: 28px;
}
.xai-panel-left {
    background: var(--xai-surface);
    border-right: 2px solid var(--xai-border);
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.xai-panel-right {
    background: var(--xai-bg);
    display: flex;
    flex-direction: column;
}

/* ─── Section Labels ────────────────────────────── */
.xai-section { display: flex; flex-direction: column; gap: 12px; }
.xai-label {
    font-size: 14px;
    font-weight: 800;
    color: var(--xai-text);
    display: flex;
    align-items: center;
    gap: 6px;
    text-transform: uppercase;
    letter-spacing: .5px;
}
.xai-label-icon { font-size: 16px; }

/* ─── Textarea ──────────────────────────────────── */
.xai-prompt-wrap { position: relative; }
.xai-textarea {
    width: 100%;
    font-family: var(--xai-font);
    font-size: 15px;
    font-weight: 600;
    color: var(--xai-text);
    background: var(--xai-surface-2);
    border: 2px solid var(--xai-border);
    border-radius: var(--xai-radius-sm);
    padding: 14px 16px 36px;
    resize: none;
    transition: border-color .2s, box-shadow .2s;
    outline: none;
    line-height: 1.6;
}
.xai-textarea::placeholder { color: var(--xai-text-3); font-weight: 400; }
.xai-textarea:focus {
    border-color: var(--xai-primary);
    box-shadow: 0 0 0 3px rgba(108,99,255,.15);
    background: #fff;
}
.xai-char-count {
    position: absolute;
    bottom: 10px;
    right: 14px;
    font-size: 11px;
    color: var(--xai-text-3);
    font-weight: 700;
}

/* ─── Quick Prompts ─────────────────────────────── */
.xai-quick-prompts {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}
.xai-quick-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--xai-text-3);
    width: 100%;
}
.xai-quick-btn {
    background: var(--xai-surface-2);
    border: 1.5px solid var(--xai-border);
    border-radius: 20px;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 700;
    font-family: var(--xai-font);
    color: var(--xai-text-2);
    cursor: pointer;
    transition: all .18s;
}
.xai-quick-btn:hover {
    background: var(--xai-primary);
    color: #fff;
    border-color: var(--xai-primary);
    transform: translateY(-1px);
}

/* ─── Style Cards ───────────────────────────────── */
.xai-styles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
}
.xai-style-card {
    background: var(--xai-surface-2);
    border: 2px solid var(--xai-border);
    border-radius: var(--xai-radius-sm);
    padding: 12px 8px;
    text-align: center;
    cursor: pointer;
    transition: all .2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}
.xai-style-card:hover {
    border-color: var(--xai-primary-2);
    background: #f5f4ff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(108,99,255,.12);
}
.xai-style-card.active {
    border-color: var(--xai-primary);
    background: linear-gradient(135deg, #f0eeff, #e8e5ff);
    box-shadow: 0 0 0 3px rgba(108,99,255,.2);
}
.xai-style-emoji { font-size: 24px; line-height: 1; }
.xai-style-name  { font-size: 12px; font-weight: 800; color: var(--xai-text); }
.xai-style-desc  { font-size: 10px; font-weight: 600; color: var(--xai-text-3); }
.xai-style-card.active .xai-style-name { color: var(--xai-primary); }

/* ─── Generate Button ───────────────────────────── */
.xai-btn-generate {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, var(--xai-primary) 0%, #9B55FF 100%);
    color: #fff;
    border: none;
    border-radius: var(--xai-radius-sm);
    font-family: var(--xai-font-title);
    font-size: 18px;
    font-weight: 800;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all .2s;
    box-shadow: 0 4px 20px rgba(108,99,255,.4);
    margin-top: auto;
    position: relative;
    overflow: hidden;
}
.xai-btn-generate::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,.15), transparent);
    opacity: 0;
    transition: opacity .2s;
}
.xai-btn-generate:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(108,99,255,.5);
}
.xai-btn-generate:hover::before { opacity: 1; }
.xai-btn-generate:active:not(:disabled) { transform: translateY(0); }
.xai-btn-generate:disabled {
    opacity: .65;
    cursor: not-allowed;
    transform: none;
}
.xai-btn-icon { font-size: 20px; }
.xai-btn-generate.loading .xai-btn-icon {
    animation: spin 1s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Result Area ───────────────────────────────── */
.xai-result-wrap {
    flex: 1;
    border-radius: var(--xai-radius);
    overflow: hidden;
    background: var(--xai-surface);
    border: 2px solid var(--xai-border);
    min-height: 500px;
    display: flex;
    flex-direction: column;
}

/* Empty State */
.xai-result-empty {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}
.xai-empty-inner { text-align: center; }
.xai-empty-illustration { margin-bottom: 20px; opacity: .7; }
.xai-empty-title {
    font-size: 18px;
    font-weight: 800;
    color: var(--xai-text-2);
    margin-bottom: 8px;
}
.xai-empty-desc {
    font-size: 14px;
    font-weight: 600;
    color: var(--xai-text-3);
    line-height: 1.6;
}

/* Loading State */
.xai-loading {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background: linear-gradient(135deg, #f8f7ff, #fff);
}
.xai-loading-inner { text-align: center; }
.xai-spinner {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.xai-spinner-ring {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    border: 4px solid var(--xai-border);
    border-top-color: var(--xai-primary);
    animation: spin 1s linear infinite;
}
.xai-spinner-icon {
    font-size: 32px;
    animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50%       { transform: scale(1.2); }
}
.xai-loading-text {
    font-family: var(--xai-font-title);
    font-size: 20px;
    font-weight: 800;
    color: var(--xai-primary);
    margin-bottom: 8px;
}
.xai-loading-sub {
    font-size: 13px;
    font-weight: 600;
    color: var(--xai-text-3);
    margin-bottom: 20px;
}
.xai-progress-bar {
    width: 200px;
    height: 6px;
    background: var(--xai-border);
    border-radius: 10px;
    overflow: hidden;
    margin: 0 auto;
}
.xai-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--xai-primary), var(--xai-blue));
    border-radius: 10px;
    width: 0%;
    animation: progress-anim 25s ease-out forwards;
}
@keyframes progress-anim { to { width: 90%; } }

/* Image Result */
.xai-image-result { flex: 1; display: flex; flex-direction: column; }
.xai-image-wrap {
    flex: 1;
    position: relative;
    overflow: hidden;
    min-height: 360px;
    background: #000;
}
.xai-result-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    animation: fadeIn .5s ease;
}
@keyframes fadeIn {
    from { opacity: 0; transform: scale(.97); }
    to   { opacity: 1; transform: scale(1); }
}
.xai-image-overlay {
    position: absolute;
    top: 12px;
    right: 12px;
    opacity: 0;
    transition: opacity .2s;
}
.xai-image-wrap:hover .xai-image-overlay { opacity: 1; }
.xai-overlay-btn {
    background: rgba(0,0,0,.6);
    color: #fff;
    border: none;
    border-radius: 8px;
    width: 36px;
    height: 36px;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
    transition: background .2s;
}
.xai-overlay-btn:hover { background: rgba(0,0,0,.8); }

.xai-image-info {
    padding: 16px 20px;
    border-top: 2px solid var(--xai-border);
    background: var(--xai-surface);
}
.xai-image-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}
.xai-meta-prompt {
    font-size: 13px;
    font-weight: 700;
    color: var(--xai-text-2);
    flex: 1;
}
.xai-meta-style {
    background: var(--xai-primary);
    color: #fff;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 800;
}
.xai-image-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.xai-action-btn {
    padding: 10px 18px;
    border-radius: var(--xai-radius-sm);
    font-family: var(--xai-font);
    font-size: 13px;
    font-weight: 800;
    cursor: pointer;
    border: 2px solid transparent;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    transition: all .18s;
}
.xai-btn-download {
    background: var(--xai-accent);
    color: #fff;
}
.xai-btn-download:hover { background: #38b090; transform: translateY(-1px); color: #fff; }
.xai-btn-regen {
    background: var(--xai-surface-2);
    color: var(--xai-primary);
    border-color: var(--xai-border);
}
.xai-btn-regen:hover { background: var(--xai-primary); color: #fff; border-color: var(--xai-primary); transform: translateY(-1px); }
.xai-btn-share {
    background: var(--xai-surface-2);
    color: var(--xai-text-2);
    border-color: var(--xai-border);
}
.xai-btn-share:hover { background: var(--xai-yellow); color: var(--xai-text); border-color: var(--xai-yellow); transform: translateY(-1px); }

/* Error State */
.xai-error {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}
.xai-error-inner { text-align: center; }
.xai-error-icon { font-size: 48px; display: block; margin-bottom: 16px; }
.xai-error-msg {
    font-size: 15px;
    font-weight: 700;
    color: #e53e3e;
    margin-bottom: 16px;
    line-height: 1.5;
}
.xai-btn-retry {
    background: var(--xai-secondary);
    color: #fff;
    border: none;
    border-radius: var(--xai-radius-sm);
    padding: 10px 24px;
    font-family: var(--xai-font);
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
    transition: all .18s;
}
.xai-btn-retry:hover { transform: translateY(-1px); box-shadow: 0 4px 12px rgba(255,101,132,.4); }

/* ─── Gallery ───────────────────────────────────── */
.xai-gallery-section {
    background: var(--xai-surface);
    border-top: 2px solid var(--xai-border);
    padding: 32px;
}
.xai-gallery-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}
.xai-gallery-title {
    font-family: var(--xai-font-title);
    font-size: 22px;
    font-weight: 800;
    color: var(--xai-text);
}
.xai-gallery-load-btn {
    background: var(--xai-surface-2);
    border: 2px solid var(--xai-border);
    border-radius: 20px;
    padding: 8px 20px;
    font-family: var(--xai-font);
    font-size: 13px;
    font-weight: 800;
    color: var(--xai-primary);
    cursor: pointer;
    transition: all .18s;
}
.xai-gallery-load-btn:hover {
    background: var(--xai-primary);
    color: #fff;
    border-color: var(--xai-primary);
}
.xai-gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.xai-gallery-item {
    border-radius: var(--xai-radius-sm);
    overflow: hidden;
    background: var(--xai-surface-2);
    border: 2px solid var(--xai-border);
    transition: all .2s;
    cursor: pointer;
}
.xai-gallery-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--xai-shadow);
    border-color: var(--xai-primary-2);
}
.xai-gallery-item img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    display: block;
}
.xai-gallery-item-info {
    padding: 10px 12px;
}
.xai-gallery-item-prompt {
    font-size: 12px;
    font-weight: 700;
    color: var(--xai-text-2);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.xai-gallery-item-style {
    font-size: 10px;
    font-weight: 700;
    color: var(--xai-primary);
    margin-top: 2px;
}

/* Loading dots */
.xai-dots { display: flex; gap: 6px; justify-content: center; }
.xai-dots span {
    width: 10px; height: 10px;
    background: var(--xai-primary);
    border-radius: 50%;
    animation: dot-bounce .8s ease-in-out infinite;
}
.xai-dots span:nth-child(2) { animation-delay: .15s; }
.xai-dots span:nth-child(3) { animation-delay: .3s; }
@keyframes dot-bounce {
    0%, 100% { transform: translateY(0); opacity:.4; }
    50%       { transform: translateY(-8px); opacity:1; }
}

/* ─── Lightbox ──────────────────────────────────── */
.xai-lightbox {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
}
.xai-lightbox-bg {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,.9);
    backdrop-filter: blur(8px);
}
.xai-lightbox-content {
    position: relative;
    z-index: 1;
    max-width: 90vw;
    max-height: 90vh;
}
.xai-lightbox-close {
    position: absolute;
    top: -16px;
    right: -16px;
    width: 36px;
    height: 36px;
    background: #fff;
    border: none;
    border-radius: 50%;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    color: var(--xai-text);
    z-index: 2;
    transition: transform .2s;
}
.xai-lightbox-close:hover { transform: scale(1.1) rotate(90deg); }
.xai-lightbox-content img {
    max-width: 90vw;
    max-height: 90vh;
    object-fit: contain;
    border-radius: 12px;
    display: block;
}

/* ─── Responsive ────────────────────────────────── */
@media (max-width: 860px) {
    .xai-main {
        grid-template-columns: 1fr;
    }
    .xai-panel-left {
        border-right: none;
        border-bottom: 2px solid var(--xai-border);
    }
    .xai-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .xai-title { font-size: 22px; }
}
@media (max-width: 480px) {
    .xai-panel { padding: 20px 16px; }
    .xai-header { padding: 20px 16px; }
    .xai-styles-grid { grid-template-columns: repeat(2, 1fr); }
    .xai-gallery-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .xai-gallery-section { padding: 20px 16px; }
    .xai-image-actions { flex-direction: column; }
    .xai-action-btn { justify-content: center; }
}