/* --- Root Variables & Reset --- */
:root {
    --bg-color: #0f0f13;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
    --text-primary: #e2e2e7;
    --text-secondary: #a0a0b0;
    --accent-color: #4a90e2;
    --nav-bg: rgba(30, 30, 46, 0.95);
    /* Fallback for blur */
    --danger: #ef4444;
}

* {
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
    /* UX-Finishing: No blue flash */
}

/* --- Global & Layout --- */
body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family:
        "Inter",
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        Roboto,
        sans-serif;
    margin: 0;
    line-height: 1.5;
    display: flex;
    justify-content: center;
    min-height: 100vh;
    overflow-x: hidden;
    /* Performance: Prevent horizontal scroll */
    -webkit-tap-highlight-color: transparent;

    /* Fix: Blurry text */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* --- Navigation Dock --- */
.navbar-dock {
    position: fixed;
    /* Safe Areas: Bottom inset */
    bottom: calc(20px + env(safe-area-inset-bottom));
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--nav-bg);
    padding: 12px 24px;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    gap: 20px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    width: max-content;
    max-width: 90%;

    /* Fix: Blurry text in transformed elements */
    backface-visibility: hidden;
}

@supports (backdrop-filter: blur(12px)) or (-webkit-backdrop-filter: blur(12px)) {
    .navbar-dock {
        background-color: rgba(30, 30, 46, 0.85);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
    }
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    /* Touch-Ergonomie: Min 44px effective height */
    padding: 10px 12px;
    user-select: none;
    /* UX-Finishing */
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    position: relative;
}

.nav-link:hover {
    color: #ffffff;
    transform: translateY(-3px);
}

.nav-link.active {
    color: var(--accent-color);
}

/* --- Pages (Profile & Settings) --- */
.profile-container,
.settings-container {
    width: 100%;
    max-width: 800px;
    padding: 40px 24px 120px 24px; /* Bottom padding to clear navbar */
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    animation: fadeIn 0.4s ease-out;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 24px;
    background: linear-gradient(135deg, #fff 0%, #a5a5a5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}