body { 
    font-family: 'Inter', sans-serif; 
}

/* Loading Screen Styles */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 1;
    transition: opacity 0.5s ease-out;
}

.loading-screen.fade-out {
    opacity: 0;
    pointer-events: none;
}

/* Loading dots animation */
.loading-dots {
    display: flex;
    gap: 20px;
}

.loading-dots span {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: #667eea;
    border-radius: 50%;
    animation: loading-bounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }
.loading-dots span:nth-child(3) { animation-delay: 0s; }

@keyframes loading-bounce {
    0%, 80%, 100% {
        transform: scale(0.8);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes blink {
    0%, 80% { opacity: 0; }
    40% { opacity: 1; }
}

.typing span {
    display:inline-block;
    width:0.5rem;
    height:0.5rem;
    margin:0 2px;
    background:currentColor;
    border-radius:9999px;
    animation: blink 1.4s infinite both;
}
.typing span:nth-child(2) { animation-delay: .2s; }
.typing span:nth-child(3) { animation-delay: .4s; }

/* Modern glassmorphism effect */
.glass {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Modern button styles */
.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

/* iOS logo styles */
.ios-logo {
    width: 20px;
    height: 20px;
    margin-right: 8px;
}

/* Auto-hiding navigation */
.nav-hidden {
    transform: translateY(-100%);
}

nav {
    transition: transform 0.3s ease-in-out;
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    max-width: 400px;
    width: 90%;
    transform: scale(0.8);
    transition: transform 0.3s ease;
}

.modal-overlay.show .modal-content {
    transform: scale(1);
}

.modal-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, #10b981, #059669);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.checkmark {
    width: 30px;
    height: 30px;
    color: white;
}

.modal-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1f2937;
}

.modal-text {
    color: #6b7280;
    margin-bottom: 1.5rem;
    line-height: 1.5;
}

.modal-close-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-close-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}