/* ============================================================
   GLASSMORPHISM STYLESHEET - Apple Liquid Glass Aesthetic
   ============================================================ */

/* CSS Variables for Glassmorphism */
:root {
    /* Glass Effect Variables */
    --glass-bg: rgba(255, 255, 255, 0.08);
    --glass-bg-hover: rgba(255, 255, 255, 0.12);
    --glass-border: rgba(255, 255, 255, 0.15);
    --glass-border-hover: rgba(255, 255, 255, 0.25);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    --glass-shadow-hover: 0 12px 48px rgba(0, 0, 0, 0.15);
    
    /* Blur Effects */
    --blur-light: blur(10px);
    --blur-medium: blur(20px);
    --blur-heavy: blur(30px);
    
    /* Glassmorphism Transitions */
    --glass-transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ============================================================
   BACKGROUND & BACKDROP EFFECTS
   ============================================================ */

/* Enhanced Body Background with Gradient Mesh */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(52, 152, 219, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(231, 76, 60, 0.08) 0%, transparent 50%),
        linear-gradient(135deg, #0f1419 0%, #1a2332 50%, #0f1419 100%);
    pointer-events: none;
    z-index: -1;
}

/* ============================================================
   HEADER GLASSMORPHISM
   ============================================================ */

.header {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--blur-medium) !important;
    -webkit-backdrop-filter: var(--blur-medium) !important;
    border-bottom: 1px solid var(--glass-border) !important;
    box-shadow: var(--glass-shadow) !important;
    transition: var(--glass-transition) !important;
}

.header.scrolled {
    background: rgba(15, 20, 25, 0.7) !important;
    backdrop-filter: var(--blur-heavy) !important;
    -webkit-backdrop-filter: var(--blur-heavy) !important;
    border-bottom: 1px solid var(--glass-border-hover) !important;
    box-shadow: var(--glass-shadow-hover) !important;
}

.navbar {
    padding: 1rem 0 !important;
}

.nav-logo {
    gap: 1.2rem !important;
}

.logo {
    border-radius: 18px !important;
    backdrop-filter: var(--blur-light) !important;
    -webkit-backdrop-filter: var(--blur-light) !important;
    box-shadow: 
        0 4px 15px rgba(255, 107, 157, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.1) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    transition: var(--glass-transition) !important;
}

.logo:hover {
    transform: scale(1.08) translateY(-2px) !important;
    box-shadow: 
        0 8px 25px rgba(255, 107, 157, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.15) !important;
}

.nav-menu {
    gap: 0.5rem !important;
}

.nav-item {
    position: relative;
}

.nav-link {
    background: transparent !important;
    color: var(--text-secondary) !important;
    padding: 0.6rem 1.2rem !important;
    border-radius: 12px !important;
    transition: var(--glass-transition) !important;
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--glass-bg);
    border-radius: 12px;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.nav-link:hover::before,
.nav-link.active::before {
    opacity: 1;
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary) !important;
    background: var(--glass-bg-hover) !important;
    backdrop-filter: var(--blur-light) !important;
    -webkit-backdrop-filter: var(--blur-light) !important;
    border: 1px solid var(--glass-border-hover) !important;
    transform: translateY(-2px) !important;
    box-shadow: 0 4px 12px rgba(255, 107, 157, 0.15) !important;
}

.nav-link::after {
    background: linear-gradient(90deg, #ff6b9d, #e74c3c) !important;
    height: 3px !important;
}

/* ============================================================
   BUTTONS GLASSMORPHISM
   ============================================================ */

.btn {
    border-radius: 16px !important;
    backdrop-filter: var(--blur-light) !important;
    -webkit-backdrop-filter: var(--blur-light) !important;
    transition: var(--glass-transition) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    font-weight: 600 !important;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), transparent);
    border-radius: 16px;
    pointer-events: none;
}

.btn-primary {
    background: linear-gradient(135deg, rgba(231, 76, 60, 0.9), rgba(255, 107, 157, 0.9)) !important;
    box-shadow: 
        0 8px 24px rgba(231, 76, 60, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.2) !important;
    border: 1px solid rgba(255, 255, 255, 0.15) !important;
}

.btn-primary:hover {
    background: linear-gradient(135deg, rgba(231, 76, 60, 1), rgba(255, 107, 157, 1)) !important;
    transform: translateY(-4px) scale(1.02) !important;
    box-shadow: 
        0 12px 32px rgba(231, 76, 60, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.25) !important;
}

.btn-secondary {
    background: var(--glass-bg) !important;
    border: 2px solid var(--glass-border-hover) !important;
    color: var(--accent-pink) !important;
    backdrop-filter: var(--blur-light) !important;
    -webkit-backdrop-filter: var(--blur-light) !important;
}

.btn-secondary:hover {
    background: var(--glass-bg-hover) !important;
    border-color: var(--accent-pink) !important;
    color: var(--text-primary) !important;
    transform: translateY(-4px) scale(1.02) !important;
    box-shadow: 
        0 12px 32px rgba(255, 107, 157, 0.25),
        inset 0 1px 0 rgba(255, 255, 255, 0.15) !important;
}

.btn-outline {
    background: var(--glass-bg) !important;
    border: 2px solid var(--glass-border) !important;
    backdrop-filter: var(--blur-light) !important;
    -webkit-backdrop-filter: var(--blur-light) !important;
    color: var(--text-secondary) !important;
}

.btn-outline:hover {
    background: var(--glass-bg-hover) !important;
    border-color: var(--accent-pink) !important;
    color: var(--text-primary) !important;
    transform: translateY(-4px) !important;
    box-shadow: 0 8px 24px rgba(255, 107, 157, 0.2) !important;
}

/* ============================================================
   CARDS GLASSMORPHISM
   ============================================================ */

.card {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--blur-medium) !important;
    -webkit-backdrop-filter: var(--blur-medium) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 24px !important;
    padding: 2rem !important;
    box-shadow: var(--glass-shadow) !important;
    transition: var(--glass-transition) !important;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), transparent);
    border-radius: 24px;
    pointer-events: none;
}

.card:hover {
    background: var(--glass-bg-hover) !important;
    border-color: var(--glass-border-hover) !important;
    transform: translateY(-8px) scale(1.02) !important;
    box-shadow: 
        var(--glass-shadow-hover),
        0 0 30px rgba(255, 107, 157, 0.15) !important;
}

.card:hover::before {
    transform: scaleX(1);
}

/* ============================================================
   FEATURE CARDS
   ============================================================ */

.feature-icon {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.2), rgba(231, 76, 60, 0.2)) !important;
    backdrop-filter: var(--blur-light) !important;
    -webkit-backdrop-filter: var(--blur-light) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    border-radius: 20px !important;
    width: 80px !important;
    height: 80px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 2.5rem !important;
    margin-bottom: 1.5rem !important;
    transition: var(--glass-transition) !important;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.1) !important;
}

.card:hover .feature-icon {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.3), rgba(231, 76, 60, 0.3)) !important;
    transform: scale(1.1) rotate(5deg) !important;
    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.2) !important;
}

/* ============================================================
   LANGUAGE CARDS GLASSMORPHISM
   ============================================================ */

.language-card {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--blur-medium) !important;
    -webkit-backdrop-filter: var(--blur-medium) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 24px !important;
    overflow: hidden !important;
    box-shadow: var(--glass-shadow) !important;
    transition: var(--glass-transition) !important;
    position: relative;
}

.language-card-image {
    position: relative;
    height: 200px;
    overflow: hidden;
    border-radius: 24px 24px 0 0 !important;
}

.language-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--glass-transition) !important;
    filter: brightness(0.9);
}

.language-card:hover .language-card-image img {
    transform: scale(1.1) !important;
    filter: brightness(1);
}

.country-code {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.4) !important;
    backdrop-filter: var(--blur-light) !important;
    -webkit-backdrop-filter: var(--blur-light) !important;
    color: white;
    padding: 0.5rem 1rem !important;
    border-radius: 12px !important;
    font-weight: 600;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
    font-size: 0.85rem;
}

.language-card-content {
    padding: 1.5rem !important;
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.5), rgba(30, 35, 40, 0.5)) !important;
    backdrop-filter: var(--blur-light) !important;
    -webkit-backdrop-filter: var(--blur-light) !important;
}

.language-card:hover {
    transform: translateY(-12px) scale(1.02) !important;
    box-shadow: 
        var(--glass-shadow-hover),
        0 0 40px rgba(255, 107, 157, 0.2) !important;
    border-color: var(--glass-border-hover) !important;
}

/* ============================================================
   TESTIMONIAL CARDS GLASSMORPHISM
   ============================================================ */

.testimonial-card {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--blur-medium) !important;
    -webkit-backdrop-filter: var(--blur-medium) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 24px !important;
    padding: 2.5rem !important;
    box-shadow: var(--glass-shadow) !important;
    transition: var(--glass-transition) !important;
    position: relative;
    overflow: hidden;
    opacity: 0;
    transform: translateX(100px);
    pointer-events: none;
}

.testimonial-card.active {
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
    animation: slideInTestimonial 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
}

.testimonial-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255, 107, 157, 0.5), transparent);
}

.testimonial-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), transparent);
    border-radius: 24px;
    pointer-events: none;
}

.testimonial-content {
    position: relative;
    z-index: 2;
}

.stars {
    color: #ffd700;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.testimonial-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--glass-border-hover);
    box-shadow: 0 4px 12px rgba(255, 107, 157, 0.2);
}

.author-info h4 {
    margin: 0;
    color: var(--text-primary);
}

.author-info p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ============================================================
   FORM ELEMENTS GLASSMORPHISM
   ============================================================ */

.form-group input,
.form-group textarea,
.form-group select {
    background: var(--glass-bg) !important;
    backdrop-filter: var(--blur-light) !important;
    -webkit-backdrop-filter: var(--blur-light) !important;
    border: 1px solid var(--glass-border) !important;
    border-radius: 16px !important;
    color: var(--text-primary) !important;
    padding: 0.875rem 1.25rem !important;
    transition: var(--glass-transition) !important;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted) !important;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    background: var(--glass-bg-hover) !important;
    border-color: var(--glass-border-hover) !important;
    box-shadow: 
        0 0 0 3px rgba(255, 107, 157, 0.1),
        var(--glass-shadow) !important;
    outline: none !important;
}

/* ============================================================
   HERO SECTION GLASSMORPHISM
   ============================================================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 30% 50%, rgba(52, 152, 219, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 70% 30%, rgba(231, 76, 60, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-text {
    animation: slideInLeft 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
}

.hero-image {
    animation: slideInRight 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) !important;
}

.hero-img {
    border-radius: 28px !important;
    box-shadow: 
        0 20px 50px rgba(0, 0, 0, 0.3),
        0 0 60px rgba(255, 107, 157, 0.15) !important;
    border: 1px solid rgba(255, 255, 255, 0.1) !important;
    transition: var(--glass-transition) !important;
}

.hero-img:hover {
    transform: scale(1.03) translateY(-5px) !important;
    box-shadow: 
        0 30px 60px rgba(0, 0, 0, 0.4),
        0 0 80px rgba(255, 107, 157, 0.25) !important;
}

/* ============================================================
   SECTION BACKGROUNDS
   ============================================================ */

.about-section {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.5), rgba(30, 35, 40, 0.3)) !important;
    backdrop-filter: var(--blur-light) !important;
    -webkit-backdrop-filter: var(--blur-light) !important;
    border-top: 1px solid rgba(255, 255, 255, 0.05) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05) !important;
}

.features-section {
    background: linear-gradient(135deg, rgba(52, 152, 219, 0.05), rgba(231, 76, 60, 0.05)) !important;
}

.languages-offered-section {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.3), rgba(30, 35, 40, 0.5)) !important;
}

.testimonials-section {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.5), rgba(30, 35, 40, 0.3)) !important;
    backdrop-filter: var(--blur-light) !important;
    -webkit-backdrop-filter: var(--blur-light) !important;
}

/* ============================================================
   ANIMATIONS
   ============================================================ */

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInTestimonial {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes popIn {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes floatUp {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(255, 107, 157, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(255, 107, 157, 0.5);
    }
}

/* ============================================================
   SCROLL ANIMATIONS
   ============================================================ */

.card,
.language-card,
.testimonial-card {
    animation: popIn 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) backwards;
}

.card:nth-child(1) { animation-delay: 0.1s; }
.card:nth-child(2) { animation-delay: 0.2s; }
.card:nth-child(3) { animation-delay: 0.3s; }

.language-card:nth-child(1) { animation-delay: 0.1s; }
.language-card:nth-child(2) { animation-delay: 0.2s; }
.language-card:nth-child(3) { animation-delay: 0.3s; }
.language-card:nth-child(4) { animation-delay: 0.4s; }
.language-card:nth-child(5) { animation-delay: 0.5s; }

/* ============================================================
   RESPONSIVE ADJUSTMENTS
   ============================================================ */

@media (max-width: 768px) {
    .card {
        border-radius: 20px !important;
        padding: 1.5rem !important;
    }
    
    .language-card {
        border-radius: 20px !important;
    }
    
    .testimonial-card {
        border-radius: 20px !important;
        padding: 1.5rem !important;
    }
    
    .btn {
        border-radius: 14px !important;
        padding: 0.75rem 1.5rem !important;
    }
    
    .nav-link {
        padding: 0.5rem 1rem !important;
        border-radius: 10px !important;
    }
}