/**
 * OneTimeRead - Icon Fonts CSS
 * Sistema de ícones usando Lucide Icons (CDN)
 * 
 * @author OneTimeRead Team
 * @version 1.0
 */

/* === ICON BASE STYLES === */
[class^="icon-"], [class*=" icon-"] {
    display: inline-block;
    width: 1em;
    height: 1em;
    stroke-width: 2;
    stroke: currentColor;
    fill: none;
    vertical-align: middle;
    line-height: 1;
}

/* === LUCIDE ICONS VIA CSS === */
/* Home */
.icon-home::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m3 9 9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z'/%3E%3Cpolyline points='9,22 9,12 15,12 15,22'/%3E%3C/svg%3E");
}

/* Shield */
.icon-shield::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z'/%3E%3C/svg%3E");
}

/* Mail */
.icon-mail::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 4h16c1.1 0 2 .9 2 2v12c0 1.1-.9 2-2 2H4c-1.1 0-2-.9-2-2V6c0-1.1.9-2 2-2z'/%3E%3Cpolyline points='22,6 12,13 2,6'/%3E%3C/svg%3E");
}

/* Book Open */
.icon-book-open::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M2 3h6a4 4 0 0 1 4 4v14a3 3 0 0 0-3-3H2z'/%3E%3Cpath d='M22 3h-6a4 4 0 0 0-4 4v14a3 3 0 0 1 3-3h7z'/%3E%3C/svg%3E");
}

/* Plus */
.icon-plus::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='12' y1='5' x2='12' y2='19'/%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E");
}

/* Message Square */
.icon-message-square::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 15a2 2 0 0 1-2 2H7l-4 4V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2z'/%3E%3C/svg%3E");
}

/* Key */
.icon-key::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m15.5 7.5 2.3 2.3a1 1 0 0 0 1.4 0l2.1-2.1a1 1 0 0 0 0-1.4L19 4'/%3E%3Cpath d='m21 2-9.6 9.6'/%3E%3Ccircle cx='7.5' cy='15.5' r='5.5'/%3E%3C/svg%3E");
}

/* Link */
.icon-link::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10 13a5 5 0 0 0 7.54.54l3-3a5 5 0 0 0-7.07-7.07l-1.72 1.71'/%3E%3Cpath d='M14 11a5 5 0 0 0-7.54-.54l-3 3a5 5 0 0 0 7.07 7.07l1.71-1.71'/%3E%3C/svg%3E");
}

/* Copy */
.icon-copy::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect width='14' height='14' x='8' y='8' rx='2' ry='2'/%3E%3Cpath d='M4 16c-1.1 0-2-.9-2-2V4c0-1.1.9-2 2-2h10c1.1 0 2 .9 2 2'/%3E%3C/svg%3E");
}

/* Warning */
.icon-warning::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m21.73 18-8-14a2 2 0 0 0-3.48 0l-8 14A2 2 0 0 0 4 21h16a2 2 0 0 0 1.73-3Z'/%3E%3Cpath d='M12 9v4'/%3E%3Cpath d='m12 17 .01 0'/%3E%3C/svg%3E");
}

/* Eye Off */
.icon-eye-off::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m15 18-.722-3.25'/%3E%3Cpath d='M2 2l20 20'/%3E%3Cpath d='M6.71 6.71C4.49 8.4 3 10.61 3 12c0 5.55 4.03 9 9 9 1.78 0 3.04-.34 4.05-.94'/%3E%3Cpath d='M10.39 4.64C10.9 4.25 11.45 4 12 4c5.55 0 9 3.45 9 8 0 1.33-.202 2.36-.59 3.1'/%3E%3Cpath d='m19.5 8.5-7 7'/%3E%3Cpath d='m9 5.5 6 6'/%3E%3C/svg%3E");
}

/* Lock */
.icon-lock::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect width='18' height='11' x='3' y='11' rx='2' ry='2'/%3E%3Cpath d='M7 11V7a5 5 0 0 1 10 0v4'/%3E%3C/svg%3E");
}

/* Clock */
.icon-clock::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpolyline points='12,6 12,12 16,14'/%3E%3C/svg%3E");
}

/* Edit */
.icon-edit::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M17 3a2.85 2.83 0 1 1 4 4L7.5 20.5 2 22l1.5-5.5Z'/%3E%3Cpath d='m15 5 4 4'/%3E%3C/svg%3E");
}

/* Share */
.icon-share::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 12v8a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2v-8'/%3E%3Cpolyline points='16,6 12,2 8,6'/%3E%3Cline x1='12' y1='2' x2='12' y2='15'/%3E%3C/svg%3E");
}

/* Trash 2 */
.icon-trash-2::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='3,6 5,6 21,6'/%3E%3Cpath d='M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2'/%3E%3Cline x1='10' y1='11' x2='10' y2='17'/%3E%3Cline x1='14' y1='11' x2='14' y2='17'/%3E%3C/svg%3E");
}

/* Check Circle */
.icon-check-circle::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M22 11.08V12a10 10 0 1 1-5.93-9.14'/%3E%3Cpolyline points='22,4 12,14.01 9,11.01'/%3E%3C/svg%3E");
}

/* Alert Circle */
.icon-alert-circle::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cline x1='12' y1='8' x2='12' y2='12'/%3E%3Cline x1='12' y1='16' x2='12.01' y2='16'/%3E%3C/svg%3E");
}

/* Alert Triangle */
.icon-alert-triangle::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m21.73 18-8-14a2 2 0 0 0-3.48 0l-8 14A2 2 0 0 0 4 21h16a2 2 0 0 0 1.73-3Z'/%3E%3Cpath d='M12 9v4'/%3E%3Cpath d='m12 17 .01 0'/%3E%3C/svg%3E");
}

/* Mail Open */
.icon-mail-open::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21.2 8.4c.5.38.8.97.8 1.6v10a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V10a2 2 0 0 1 .8-1.6l8-6a2 2 0 0 1 2.4 0l8 6Z'/%3E%3Cpath d='m22 10-8.97 5.7a1.94 1.94 0 0 1-2.06 0L2 10'/%3E%3C/svg%3E");
}

/* File X */
.icon-file-x::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M15 2H6a2 2 0 0 0-2 2v16a2 2 0 0 0 2 2h12a2 2 0 0 0 2-2V7Z'/%3E%3Cpath d='M14 2v4a2 2 0 0 0 2 2h4'/%3E%3Cpath d='m9.5 12.5 5-5'/%3E%3Cpath d='m14.5 12.5-5-5'/%3E%3C/svg%3E");
}

/* X Circle */
.icon-x-circle::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='m15 9-6 6'/%3E%3Cpath d='m9 9 6 6'/%3E%3C/svg%3E");
}

/* Info */
.icon-info::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='m9 12 2 2 4-4'/%3E%3C/svg%3E");
}

/* Help Circle */
.icon-help-circle::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M9.09 9a3 3 0 0 1 5.83 1c0 2-3 3-3 3'/%3E%3Cpath d='m12 17 .01 0'/%3E%3C/svg%3E");
}

/* Check */
.icon-check::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20,6 9,17 4,12'/%3E%3C/svg%3E");
}

/* User */
.icon-user::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2'/%3E%3Ccircle cx='12' cy='7' r='4'/%3E%3C/svg%3E");
}

/* At Sign */
.icon-at-sign::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='4'/%3E%3Cpath d='M16 8v5a3 3 0 0 0 6 0v-1a10 10 0 1 0-4 8'/%3E%3C/svg%3E");
}

/* Tag */
.icon-tag::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 2H2v10l9.29 9.29c.94.94 2.48.94 3.42 0l6.58-6.58c.94-.94.94-2.48 0-3.42L12 2Z'/%3E%3Cpath d='M7 7h.01'/%3E%3C/svg%3E");
}

/* Send */
.icon-send::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m22 2-7 20-4-9-9-4Z'/%3E%3Cpath d='M22 2 11 13'/%3E%3C/svg%3E");
}

/* Loader */
.icon-loader::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='12' y1='2' x2='12' y2='6'/%3E%3Cline x1='12' y1='18' x2='12' y2='22'/%3E%3Cline x1='4.93' y1='4.93' x2='7.76' y2='7.76'/%3E%3Cline x1='16.24' y1='16.24' x2='19.07' y2='19.07'/%3E%3Cline x1='2' y1='12' x2='6' y2='12'/%3E%3Cline x1='18' y1='12' x2='22' y2='12'/%3E%3Cline x1='4.93' y1='19.07' x2='7.76' y2='16.24'/%3E%3Cline x1='16.24' y1='7.76' x2='19.07' y2='4.93'/%3E%3C/svg%3E");
}

/* Activity */
.icon-activity::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M22 12h-4l-3 9L9 3l-3 9H2'/%3E%3C/svg%3E");
}

/* Chevron Up */
.icon-chevron-up::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m18 15-6-6-6 6'/%3E%3C/svg%3E");
}

/* Shield Check */
.icon-shield-check::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 13c0 5-3.5 7.5-7.66 8.95a1 1 0 0 1-.67-.01C7.5 20.5 4 18 4 13V6a1 1 0 0 1 1-1c2 0 4.5-1.2 6.24-2.72a1.17 1.17 0 0 1 1.52 0C14.51 3.81 17 5 19 5a1 1 0 0 1 1 1z'/%3E%3Cpath d='m9 12 2 2 4-4'/%3E%3C/svg%3E");
}

/* User X */
.icon-user-x::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M16 21v-2a4 4 0 0 0-4-4H8a4 4 0 0 0-4 4v2'/%3E%3Ccircle cx='12' cy='7' r='4'/%3E%3Cline x1='18' y1='8' x2='23' y2='13'/%3E%3Cline x1='23' y1='8' x2='18' y2='13'/%3E%3C/svg%3E");
}

/* Smartphone */
.icon-smartphone::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect width='14' height='20' x='5' y='2' rx='2' ry='2'/%3E%3Cpath d='M12 18h.01'/%3E%3C/svg%3E");
}

/* Dollar Sign */
.icon-dollar-sign::before {
    content: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='12' y1='1' x2='12' y2='23'/%3E%3Cpath d='M17 5H9.5a3.5 3.5 0 0 0 0 7h5a3.5 3.5 0 0 1 0 7H6'/%3E%3C/svg%3E");
}

/* === ICON ANIMATIONS === */
@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

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

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% { transform: translateY(0); }
    40%, 43% { transform: translateY(-10px); }
    70% { transform: translateY(-5px); }
    90% { transform: translateY(-2px); }
}

/* Loading spinner animation */
.icon-loader::before {
    animation: spin 1s linear infinite;
}

/* Pulse animation for warnings */
.icon-warning::before,
.icon-alert-circle::before,
.icon-alert-triangle::before {
    animation: pulse 2s ease-in-out infinite;
}

/* === ICON SIZES === */
.icon-xs {
    font-size: 0.75rem;
}

.icon-sm {
    font-size: 0.875rem;
}

.icon-base {
    font-size: 1rem;
}

.icon-lg {
    font-size: 1.125rem;
}

.icon-xl {
    font-size: 1.25rem;
}

.icon-2xl {
    font-size: 1.5rem;
}

.icon-3xl {
    font-size: 2rem;
}

.icon-4xl {
    font-size: 2.5rem;
}

.icon-5xl {
    font-size: 3rem;
}

/* === ICON COLORS === */
.icon-primary { color: var(--primary-color); }
.icon-secondary { color: var(--secondary-color); }
.icon-success { color: var(--secondary-color); }
.icon-warning { color: var(--warning-color); }
.icon-danger { color: var(--accent-color); }
.icon-info { color: var(--info-color); }
.icon-muted { color: var(--text-muted); }
.icon-white { color: white; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
    .icon-responsive-sm {
        font-size: 0.875rem;
    }
    
    .icon-responsive-base {
        font-size: 1rem;
    }
    
    .icon-responsive-lg {
        font-size: 1.25rem;
    }
}

/* === ACCESSIBILITY === */
@media (prefers-reduced-motion: reduce) {
    .icon-loader::before,
    .icon-warning::before,
    .icon-alert-circle::before,
    .icon-alert-triangle::before {
        animation: none;
    }
}

/* High contrast support */
@media (prefers-contrast: high) {
    [class^="icon-"], [class*=" icon-"] {
        stroke-width: 3;
    }
}