/* ============================================================
   Paper Slip Sheets Hero Slider
   Mirrors the homepage hero slider (index.html) so the
   "Paper Slip Sheets" page uses the same carousel pattern.
   All CSS variables referenced below are defined in
   css/paper-slip-sheet.css :root (loaded before this file).
   ============================================================ */

.hero-slider {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
    background: var(--gradient-hero);
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    visibility: hidden;
    transition: opacity 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.slide-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    transform: scale(1.15);
    transition: transform 8s ease-out;
}

.slide.active .slide-background {
    transform: scale(1);
}

/* Removed hero blue mask: show uploaded slide image directly. */
.slide::before {
    content: none;
}

.slide-content {
    position: absolute;
    top: 50%;
    left: 10%;
    transform: translateY(-50%);
    color: var(--white);
    z-index: 2;
    max-width: 650px;
}

.slide-content h1,
.slide-content h2,
.slide-content p,
.slide-content .btn {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide.active .slide-content h1,
.slide.active .slide-content h2 {
    transition-delay: 0.5s;
    opacity: 1;
    transform: translateY(0);
}

.slide.active .slide-content p {
    transition-delay: 0.7s;
    opacity: 1;
    transform: translateY(0);
}

.slide.active .slide-content .btn {
    transition-delay: 0.9s;
    opacity: 1;
    transform: translateY(0);
}

.slide-content h1,
.slide-content h2 {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    margin-bottom: var(--space-lg);
    text-shadow: 0 3px 6px rgba(0, 0, 0, 0.3);
    line-height: 1.1;
}

.slide-content p {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-xl);
    font-weight: 300;
    max-width: 500px;
    color: var(--gray-100);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.title-line {
    display: block;
    color: var(--gray-100);
}

.title-highlight {
    display: block;
    color: var(--white);
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.stat-item {
    text-align: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--white);
    display: block;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--gray-200);
    font-weight: 500;
}

/* Enhanced Slider Navigation */
.slider-nav {
    position: absolute;
    bottom: 40px;
    left: 10%;
    display: flex;
    gap: 12px;
    z-index: 2;
}

.nav-dot {
    width: 40px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    border-radius: 2px;
}

.nav-dot .progress {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 0;
    background: var(--white);
    border-radius: 2px;
}

.nav-dot.active .progress {
    width: 100%;
    transition: width 5s linear;
}

.slider-arrow {
    position: absolute;
    bottom: 25px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    color: var(--white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 2;
    transition: all 0.3s;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-arrow:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--white);
    transform: scale(1.1);
}

.slider-arrow.left {
    right: 100px;
}

.slider-arrow.right {
    right: 40px;
}

/* Responsive */
@media (max-width: 1024px) {
    .slide-content {
        left: 5%;
        max-width: 90%;
    }

    .slider-nav {
        left: 5%;
    }

    .slider-arrow.left {
        right: 80px;
    }

    .slider-arrow.right {
        right: 20px;
    }
}

@media (max-width: 768px) {
    .hero-slider {
        height: 80vh;
    }

    .slide-content h1 {
        font-size: var(--font-size-4xl);
    }

    .hero-stats {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
}