/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --secondary-color: #8b5cf6;
    --background: #0f0f23;
    --surface: #1a1a2e;
    --text-primary: #ffffff;
    --text-secondary: #a0a0c0;
    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;
}

body, html {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Splash Screen */
#splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--background) 0%, #16213e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease-out, visibility 0.5s ease-out;
}

#splash-screen.fade-out {
    opacity: 0;
    visibility: hidden;
}

.splash-content {
    text-align: center;
    padding: 2rem;
}

.logo-container {
    margin-bottom: 2rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.9;
    }
}

.app-logo {
    width: 100px;
    height: 100px;
    filter: drop-shadow(0 10px 30px rgba(99, 102, 241, 0.4));
}

.app-name {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 2rem;
    letter-spacing: -0.5px;
}

.loading-bar {
    width: 200px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    margin: 0 auto 1rem;
    overflow: hidden;
}

.loading-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 10px;
    animation: loading 1.5s ease-in-out infinite;
}

@keyframes loading {
    0% {
        width: 0%;
    }
    50% {
        width: 70%;
    }
    100% {
        width: 100%;
    }
}

.loading-text {
    color: var(--text-secondary);
    font-size: 0.9rem;
    animation: fadeInOut 2s ease-in-out infinite;
}

@keyframes fadeInOut {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
}

/* Install Prompt */
.install-prompt {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface);
    border-top-left-radius: 20px;
    border-top-right-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.3);
    z-index: 10000;
    transform: translateY(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.install-prompt:not(.hidden) {
    transform: translateY(0);
}

.install-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.install-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.install-buttons {
    display: flex;
    gap: 0.75rem;
}

.btn-install,
.btn-dismiss {
    flex: 1;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-install {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-install:active {
    transform: scale(0.98);
}

.btn-dismiss {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

/* App Container */
#app-container {
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.3s ease-in;
}

#app-container:not(.hidden) {
    opacity: 1;
}

#app-frame {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* Offline Indicator */
.offline-indicator {
    position: fixed;
    top: 10px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: var(--warning);
    color: var(--background);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
    z-index: 10001;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.offline-indicator:not(.hidden) {
    transform: translateX(-50%) translateY(0);
}

.offline-indicator svg {
    flex-shrink: 0;
}

/* Hidden class */
.hidden {
    display: none !important;
}

/* iOS Safe Area Support */
@supports (padding: env(safe-area-inset-top)) {
    body {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }
}

/* Animations for smoother transitions */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}