/* ========== גופנים ומשתנים גלובליים ========== */
@import url('https://fonts.googleapis.com/css2?family=Heebo:wght@300;400;500;600;700&display=swap');

:root {
    --primary-color: #9c27b0;
    --secondary-color: #ba68c8;
    --accent-color: #7b1fa2;
    --bg-gradient: linear-gradient(135deg, #f3e5f5 0%, #e1bee7 50%, #ce93d8 100%);
    --text-color: #1f2937;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.25);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Heebo', sans-serif;
    direction: rtl;
    background: var(--bg-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    color: var(--text-color);
    -webkit-tap-highlight-color: transparent;
    -webkit-touch-callout: none;
    -webkit-user-select: none;
    user-select: none;
}

/* ========== Container ראשי ========== */
.flipbook-container {
    width: 95vw;
    height: 95vh;
    max-width: 1400px;
    max-height: 900px;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 20px;
}

/* ========== ניווט עליון ========== */
.navigation {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
    padding: 15px 30px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    z-index: 10;
    position: relative;
}

/* לוגו */
.logo {
    height: 50px;
    width: auto;
    object-fit: contain;
    transition: var(--transition);
    flex-shrink: 0;
}

.logo:hover {
    transform: scale(1.05);
}

/* כותרת */
.title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-color);
    text-align: center;
    margin: 0;
    flex: 1;
}

.nav-btn {
    width: 50px;
    height: 50px;
    border: none;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.nav-btn:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: var(--shadow-lg);
}

.nav-btn:active {
    transform: translateY(0) scale(0.98);
}

.nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.page-info {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
    min-width: 100px;
    justify-content: flex-start;
    flex-shrink: 0;
}

.separator {
    color: #9ca3af;
}

/* ========== אזור הספר ========== */
.book-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 2000px;
    position: relative;
    overflow: visible;
}

/* כפתורי הפיכת דף בתוך החוברת */
.page-turn-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 80px;
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid var(--primary-color);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    color: var(--primary-color);
}

.page-turn-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-50%) scale(1.1);
    box-shadow: var(--shadow-lg);
}

.page-turn-btn:active {
    transform: translateY(-50%) scale(0.95);
}

.page-turn-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: translateY(-50%);
}

/* כפתור הבא - בצד ימין */
.next-page-btn {
    right: -35px;
}

/* כפתור קודם - בצד שמאל */
.prev-page-btn {
    left: -35px;
}

.book {
    position: relative;
    width: 100%;
    height: 100%;
    max-width: 1200px;
    max-height: 800px;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== עמודים ========== */
.page {
    position: absolute;
    width: 50%;
    height: 100%;
    top: 0;
    transform-style: preserve-3d;
    transition: transform 0.8s cubic-bezier(0.645, 0.045, 0.355, 1);
    box-shadow: var(--shadow-xl);
}

.page-right {
    right: 0;
    transform-origin: left center;
}

.page-left {
    left: 0;
    transform-origin: right center;
}

.page-content {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: 8px;
}

.page-content canvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* מספר עמוד */
.page-number {
    position: absolute;
    bottom: 20px;
    left: 20px;
    font-size: 14px;
    font-weight: 500;
    color: #666;
    background: rgba(255, 255, 255, 0.9);
    padding: 5px 12px;
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    z-index: 10;
}

/* אפקט הפיכת עמוד - משמאל לימין */
.page-right.flipping {
    transform: rotateY(180deg);
    z-index: 100;
}

.page-left.flipping {
    transform: rotateY(-180deg);
    z-index: 100;
}

.page-right.flipping-reverse {
    transition: transform 0.8s cubic-bezier(0.645, 0.045, 0.355, 1);
    z-index: 100;
}

.page-left.flipping-reverse {
    transition: transform 0.8s cubic-bezier(0.645, 0.045, 0.355, 1);
    z-index: 100;
}

/* אפקט צל דינמי */
.page::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to left, rgba(0, 0, 0, 0.1), transparent);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
    z-index: 1;
}

.page:hover::before {
    opacity: 1;
}

/* ========== פקדים תחתונים ========== */
.controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    padding: 15px 30px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

.control-btn {
    width: 45px;
    height: 45px;
    border: none;
    background: white;
    color: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    border: 2px solid #e5e7eb;
}

.control-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.control-btn:active {
    transform: translateY(0) scale(0.95);
}

/* ========== Loading ========== */
.loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    background: white;
    padding: 40px 60px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    z-index: 1000;
}

.loading.hidden {
    display: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #f3f4f6;
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading p {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-color);
}

/* ========== מסך מלא ========== */
.flipbook-container:fullscreen {
    max-width: none;
    max-height: none;
    width: 100vw;
    height: 100vh;
}

/* ========== אנימציות נוספות ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* אפקט ניירת */
.page::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
        transparent 0%,
        rgba(255, 255, 255, 0.3) 50%,
        transparent 100%);
    transform: translateX(-100%);
    transition: transform 0.6s;
    pointer-events: none;
}

.page:hover::after {
    transform: translateX(100%);
}

/* ========== Responsive ========== */
@media (max-width: 768px) {
    .flipbook-container {
        width: 100vw;
        height: 100vh;
        padding: 5px;
        gap: 5px;
    }

    .navigation {
        padding: 8px 10px;
        gap: 10px;
        flex-wrap: nowrap;
    }

    .logo {
        height: 35px;
    }

    .title {
        font-size: 0.9rem;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .page-info {
        font-size: 0.9rem;
        min-width: 60px;
    }

    .controls {
        padding: 8px 10px;
        gap: 8px;
    }

    .control-btn {
        width: 35px;
        height: 35px;
    }

    .control-btn svg {
        width: 16px;
        height: 16px;
    }

    /* כפתורי העברת דף במובייל */
    .page-turn-btn {
        width: 50px;
        height: 60px;
        border-radius: 6px;
    }

    .page-turn-btn svg {
        width: 24px;
        height: 24px;
    }

    .next-page-btn {
        right: -25px;
    }

    .prev-page-btn {
        left: -25px;
    }

    /* התאמת גודל הספר למובייל */
    .book {
        max-width: 100%;
        max-height: 100%;
    }

    .book-wrapper {
        padding: 0 30px;
    }

    /* מספרי עמודים קטנים יותר */
    .page-number {
        font-size: 11px;
        padding: 3px 8px;
        bottom: 10px;
        left: 10px;
    }
}

/* מובייל קטן מאוד */
@media (max-width: 480px) {
    .title {
        font-size: 0.75rem;
    }

    .logo {
        height: 30px;
    }

    .page-info {
        font-size: 0.8rem;
        min-width: 50px;
    }

    .control-btn {
        width: 32px;
        height: 32px;
    }

    .control-btn svg {
        width: 14px;
        height: 14px;
    }

    .page-turn-btn {
        width: 45px;
        height: 55px;
    }

    .next-page-btn {
        right: -22px;
    }

    .prev-page-btn {
        left: -22px;
    }
}

/* מצב לנדסקייפ במובייל */
@media (max-width: 768px) and (orientation: landscape) {
    .navigation {
        padding: 5px 10px;
    }

    .controls {
        padding: 5px 10px;
    }

    .logo {
        height: 30px;
    }

    .title {
        font-size: 0.8rem;
    }

    .page-info {
        font-size: 0.8rem;
    }
}

/* טאבלט */
@media (min-width: 769px) and (max-width: 1024px) {
    .flipbook-container {
        width: 98vw;
        height: 98vh;
        padding: 15px;
    }

    .navigation, .controls {
        padding: 12px 20px;
    }

    .logo {
        height: 45px;
    }

    .title {
        font-size: 1.2rem;
    }

    .page-info {
        font-size: 1.1rem;
    }

    .page-turn-btn {
        width: 55px;
        height: 70px;
    }
}

/* ========== אפקטים מיוחדים ========== */
.book:hover {
    transform: scale(1.01);
}

/* גלואו על כפתורים פעילים */
.nav-btn:not(:disabled):hover,
.control-btn:hover {
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
}

/* אפקט מעבר חלק בין עמודים */
.page {
    will-change: transform;
}

/* אפקט צללים דינמי */
.book {
    filter: drop-shadow(0 25px 50px rgba(0, 0, 0, 0.15));
}

/* סגנון גלילה מותאם */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}