/* Minimal FontAwesome substitute using Unicode symbols */
.fas {
    font-family: Arial, sans-serif;
    font-weight: normal;
    font-style: normal;
    display: inline-block;
    text-rendering: auto;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Core Icons */
.fa-envelope::before { content: "✉"; }
.fa-user::before { content: "👤"; }
.fa-clock::before { content: "🕐"; }
.fa-key::before { content: "🔑"; }
.fa-bolt::before { content: "⚡"; }
.fa-user-plus::before { content: "👤+"; }
.fa-inbox::before { content: "📥"; }
.fa-edit::before { content: "✏"; }
.fa-plus::before { content: "+"; }
.fa-sync-alt::before { content: "🔄"; }
.fa-sign-out-alt::before { content: "🚪"; }
.fa-sign-in-alt::before { content: "🚪"; }
.fa-heartbeat::before { content: "💓"; }
.fa-arrow-left::before { content: "←"; }
.fa-paper-plane::before { content: "✈"; }
.fa-eraser::before { content: "🗑"; }
.fa-times::before { content: "×"; }
.fa-copy::before { content: "📋"; }
.fa-trash::before { content: "🗑"; }
.fa-info-circle::before { content: "ℹ"; }
.fa-exclamation-circle::before { content: "⚠"; }
.fa-check-circle::before { content: "✓"; }
.fa-circle::before { content: "●"; }
.fa-circle-notch::before { content: "◐"; }
.fa-spinner::before { content: "◐"; }
.fa-envelope-open::before { content: "📤"; }
.fa-chevron-left::before { content: "‹"; }
.fa-chevron-right::before { content: "›"; }
.fa-qrcode::before { content: "▦"; }
.fa-download::before { content: "↓"; }
.fa-eye::before { content: "👁"; }
.fa-paperclip::before { content: "📎"; }

/* File type icons */
.fa-file::before { content: "📄"; }
.fa-file-alt::before { content: "📄"; }
.fa-file-pdf::before { content: "📄"; }
.fa-file-word::before { content: "📄"; }
.fa-file-excel::before { content: "📊"; }
.fa-file-powerpoint::before { content: "📊"; }
.fa-file-image::before { content: "🖼"; }
.fa-file-video::before { content: "🎬"; }
.fa-file-audio::before { content: "🎵"; }
.fa-file-archive::before { content: "📦"; }
.fa-file-code::before { content: "📝"; }
.fa-file-csv::before { content: "📊"; }

/* Animation */
.fa-spin {
    animation: fa-spin 1s infinite linear;
}

@keyframes fa-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}