:root {
    --primary-color: #3b517f;
    --primary-hover: #2c3e50;
    --accent-blue: #007AFF;
    --bg-dark: #0f172a;
    --bg-color: #1e293b;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --surface-color: #1e293b;
    --text-main: #f8fafc;
    --text-dim: #94a3b8;
    --error-color: #ef4444;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --border-radius: 16px;
    --sidebar-width: 280px;
}

* {
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

html, body {
    height: 100%;
    height: -webkit-fill-available;
    margin: 0;
    padding: 0;
    overflow: hidden;
    position: fixed;
    width: 100%;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    display: flex;
    flex-direction: column;
}

#app {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

#main-container {
    display: flex;
    flex: 1;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.content-area {
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    position: relative;
    height: 100%;
}

.view {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-dark);
}

.hidden { display: none !important; }

.fab {
    position: fixed;
    bottom: calc(25px + env(safe-area-inset-bottom));
    right: 20px;
    width: 60px;
    height: 60px;
    border-radius: 18px;
    background: var(--accent-blue);
    color: white;
    font-size: 32px;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px rgba(0, 122, 255, 0.4);
}

.corner-menu-btn {
    position: fixed;
    top: calc(15px + env(safe-area-inset-top));
    left: 15px;
    width: 44px;
    height: 44px;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: white;
    z-index: 3000;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
}