/* =============================
   MILESTONE ADMIN STYLES
   Modern & Exciting Card-based Design
   ============================= */

/* Container Styles */
.milestones-container {
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
}

.milestones-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="rgba(255,255,255,0.03)"/><circle cx="75" cy="75" r="1" fill="rgba(255,255,255,0.03)"/><circle cx="50" cy="10" r="0.5" fill="rgba(255,255,255,0.02)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    pointer-events: none;
    z-index: 1;
}

.milestones-container > * {
    position: relative;
    z-index: 2;
}

/* Analytics Section */
.analytics-section {
    margin-bottom: 35px;
    padding: 25px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.analytics-section h3 {
    color: #fff;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.analytics-section h3::before {
    content: '';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    content: '\f080'; /* chart icon */
    font-size: 20px;
    background: linear-gradient(135deg, #8e2de2, #4a00e0);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-right: 8px;
    animation: pulse 2s infinite;
}

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* افزودن رسپانسیو برای دستگاه‌های کوچکتر */
@media (max-width: 1200px) {
    .analytics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .analytics-grid {
        grid-template-columns: 1fr;
    }
}

.analytics-card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2) 0%, rgba(255, 255, 255, 0.1) 100%);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 25px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.analytics-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.analytics-card:hover::before {
    left: 100%;
}

.analytics-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.analytics-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.15) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 15px;
    border: 2px solid rgba(255, 255, 255, 0.4);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.analytics-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.1);
    z-index: -1;
    border-radius: 50%;
    transform: scale(0);
    transition: transform 0.3s ease;
}

.analytics-card:hover .analytics-icon::before {
    transform: scale(1.5);
}

.analytics-icon i {
    font-size: 26px;
    color: #fff;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    filter: drop-shadow(0 3px 5px rgba(0, 0, 0, 0.3));
    transition: transform 0.3s ease;
}

.analytics-card:hover .analytics-icon i {
    transform: scale(1.1);
}

.analytics-title {
    display: block;
    color: rgba(255, 255, 255, 0.8);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.analytics-value {
    display: block;
    font-size: 20px; 
    font-weight: 800;
    margin-bottom: 18px;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    background: linear-gradient(90deg, #fff, rgba(255, 255, 255, 0.7));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: transform 0.3s ease;
    position: relative;
}

.analytics-card:hover .analytics-value {
    transform: translateY(-2px);
}

.analytics-value::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -5px;
    width: 30px;
    height: 3px;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.8), transparent);
    border-radius: 3px;
}

.analytics-trend {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    padding: 8px 12px;
    border-radius: 20px;
    background: rgba(0, 0, 0, 0.25);
    align-self: flex-start;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.16);
    backdrop-filter: blur(5px);
    min-width: 140px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

/* افزودن افکت روشن به متن استاتوس‌ها برای خوانایی بهتر */
.analytics-trend i {
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.5));
    font-size: 15px;
    margin-right: 2px;
}

.analytics-trend span {
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.trend-up {
    color: #4ade80;
    background: rgba(74, 222, 128, 0.2);
    border: 1px solid rgba(74, 222, 128, 0.3);
}

.trend-down {
    color: #f87171;
    background: rgba(248, 113, 113, 0.2);
    border: 1px solid rgba(248, 113, 113, 0.3);
}

.trend-neutral {
    color: #e2e8f0;
    background: rgba(100, 116, 139, 0.3);
    border: 1px solid rgba(100, 116, 139, 0.3);
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
    }
}

/* Milestone Form */
.milestone-form {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.milestone-form::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb, #f5576c);
    background-size: 200% 100%;
    animation: gradientShift 3s ease infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.milestone-form h3 {
    color: #2d3748;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.milestone-form h3::before {
    content: '🎯';
    font-size: 28px;
    animation: rotate 4s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.form-group {
    position: relative;
}

.form-group label {
    display: block;
    color: #4a5568;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 12px;
    font-size: 16px;
    background: #fff;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

.form-group small {
    display: block;
    color: #718096;
    font-size: 12px;
    margin-top: 4px;
    font-style: italic;
}

.checkbox-label {
    display: flex !important;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    padding: 12px;
    background: #f7fafc;
    border-radius: 12px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    text-transform: none !important;
    letter-spacing: normal !important;
}

.checkbox-label:hover {
    background: #edf2f7;
    border-color: #e2e8f0;
}

.checkbox-label input[type="checkbox"] {
    width: 20px !important;
    height: 20px;
    margin: 0 !important;
    accent-color: #667eea;
}

.plan-select {
    grid-column: 1 / -1;
    transition: all 0.3s ease;
}

/* Form Actions */
.form-actions {
    display: flex;
    justify-content: center;
    padding-top: 20px;
    border-top: 1px solid #e2e8f0;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Milestone List */
.milestone-list {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.list-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e2e8f0;
}

.list-header h3 {
    color: #2d3748;
    font-size: 24px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 10px;
}

.list-header h3::before {
    content: '🏆';
    font-size: 28px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

.btn-icon {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-icon:hover {
    transform: rotate(360deg) scale(1.1);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

/* Milestone Grid */
.milestone-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.milestone-card {
    background: linear-gradient(135deg, #fff 0%, #f8fafc 100%);
    border-radius: 20px;
    padding: 25px;
    border: 2px solid #e2e8f0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.milestone-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #4ade80, #3b82f6, #8b5cf6, #ef4444);
    background-size: 200% 100%;
    animation: gradientShift 4s ease infinite;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.milestone-card:hover::before {
    opacity: 1;
}

.milestone-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: #667eea;
    box-shadow: 0 20px 40px rgba(102, 126, 234, 0.15);
}

.milestone-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e2e8f0;
}

.milestone-title {
    color: #2d3748;
    font-size: 20px;
    font-weight: 700;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.milestone-title::before {
    content: '🎯';
    font-size: 24px;
}

.milestone-status {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.milestone-status.active {
    background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(34, 197, 94, 0.3);
}

.milestone-status.inactive {
    background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
    color: #fff;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

/* Milestone Details */
.milestone-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.milestone-stat {
    background: #f8fafc;
    padding: 15px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.milestone-stat:hover {
    background: #f1f5f9;
    transform: translateY(-2px);
}

.milestone-stat-label {
    display: block;
    color: #64748b;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.milestone-stat-value {
    display: block;
    color: #1e293b;
    font-size: 18px;
    font-weight: 700;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    padding-top: 20px;
    border-top: 1px solid #e2e8f0;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
    transform: translateY(0);
}

/* دکمه‌های مخصوص برای کارت‌های مایلستون */
.milestone-card .btn-secondary,
.milestone-card .btn-danger {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    min-width: 100px;
    color: #fff;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
}

.milestone-card .btn-secondary {
    background: linear-gradient(135deg, #64748b 0%, #475569 100%);
}

.milestone-card .btn-secondary:hover {
    background: linear-gradient(135deg, #475569 0%, #334155 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

.milestone-card .btn-danger {
    background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
}

.milestone-card .btn-danger:hover {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 10px rgba(239, 68, 68, 0.3);
}

/* Override for action buttons inside milestone card */
.milestone-card .action-buttons {
    justify-content: flex-end;
    padding-top: 15px;
    gap: 10px;
}

/* Milestone card styles */
.milestone-card {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.milestone-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.milestone-title {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

.milestone-status {
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.milestone-status.active {
    background-color: #66bb6a;
    color: white;
}

.milestone-status.inactive {
    background-color: #bdbdbd;
    color: #424242;
}

.milestone-details {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 12px;
    margin-bottom: 16px;
}

.milestone-stat {
    display: flex;
    flex-direction: column;
}

.milestone-stat-label {
    font-size: 12px;
    color: #757575;
    margin-bottom: 4px;
}

.milestone-stat-value {
    font-size: 16px;
    font-weight: 500;
}

.action-buttons {
    display: flex;
    gap: 8px;
}


/* Form styles */
.milestone-form {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 24px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.milestone-form-title {
    margin-top: 0;
    margin-bottom: 16px;
    font-size: 18px;
    font-weight: 600;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-label {
    font-size: 14px;
    margin-bottom: 6px;
    font-weight: 500;
}

.form-input,
.form-select {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.form-input:focus,
.form-select:focus {
    border-color: #5c6bc0;
    outline: none;
    box-shadow: 0 0 0 2px rgba(92, 107, 192, 0.2);
}

small {
    font-size: 12px;
    color: #757575;
    margin-top: 4px;
}

/* Loading indicator */
.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #5c6bc0;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 16px;
}

.error-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: #e53935;
    padding: 32px;
}

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

/* Enhanced Interactive Effects & Animations */

/* Featured Milestone Card */
.milestone-card.featured {
    background: linear-gradient(135deg, #fef3c7 0%, #fbbf24 20%, #f59e0b 100%);
    border: 3px solid #f59e0b;
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    from { box-shadow: 0 0 20px rgba(245, 158, 11, 0.4); }
    to { box-shadow: 0 0 30px rgba(245, 158, 11, 0.8), 0 0 40px rgba(245, 158, 11, 0.4); }
}

/* Achievement Celebration */
.milestone-achieved::after {
    content: '🎉';
    position: absolute;
    top: -10px;
    right: -10px;
    font-size: 30px;
    animation: celebrate 1s ease-in-out infinite;
}

@keyframes celebrate {
    0%, 100% { transform: scale(1) rotate(0deg); }
    25% { transform: scale(1.2) rotate(-15deg); }
    75% { transform: scale(1.2) rotate(15deg); }
}

/* Loading Button State */
.btn-primary.loading,
.btn-primary.processing {
    position: relative;
    color: transparent !important;
    pointer-events: none;
}

.btn-primary.loading::after,
.btn-primary.processing::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 2px solid #ffffff;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: buttonSpin 1s linear infinite;
}

.btn-secondary.disabled,
.btn-danger.disabled,
.btn-primary.disabled {
    opacity: 0.65;
    cursor: not-allowed;
    pointer-events: none;
}

/* Loading Indicator */
.loading-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    color: white;
    font-weight: 500;
    margin: 20px 0;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid #fff;
    border-radius: 50%;
    animation: buttonSpin 1s linear infinite;
    margin-bottom: 10px;
}

/* Error Message */
.error-message {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px;
    background: rgba(239, 68, 68, 0.2);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    color: white;
    font-weight: 500;
    margin: 20px 0;
}

.error-message i {
    font-size: 36px;
    margin-bottom: 10px;
    color: #ef4444;
}

/* Progress Bar Component */
.progress-container {
    background: #e5e7eb;
    border-radius: 10px;
    overflow: hidden;
    height: 8px;
    margin: 10px 0;
    position: relative;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 10px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.progress-bar::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Notification Badge */
.notification-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4);
    animation: ping 2s cubic-bezier(0, 0, 0.2, 1) infinite;
}

@keyframes ping {
    75%, 100% {
        transform: scale(2);
        opacity: 0;
    }
}

/* Enhanced Mobile Responsive */
@media (max-width: 640px) {
    .analytics-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .milestone-filters {
        flex-direction: column;
        gap: 10px;
    }
    
    .fab {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
        font-size: 20px;
    }
}

/* Accessibility & Performance */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.milestone-card:focus,
.btn-primary:focus {
    outline: 3px solid #fbbf24;
    outline-offset: 2px;
}

@keyframes buttonSpin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Processing States for Action Buttons */
.toggle-status-btn,
.delete-milestone-btn {
    position: relative;
}

.toggle-status-btn:disabled,
.delete-milestone-btn:disabled {
    color: transparent;
    pointer-events: none;
}

.toggle-status-btn:disabled::after,
.delete-milestone-btn:disabled::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid currentColor;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: buttonSpin 1s linear infinite;
}

/* Milestone action buttons */
.toggle-status-btn, .delete-milestone-btn {
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    border: none;
}

.toggle-status-btn {
    background-color: #5c6bc0;
    color: white;
}

.toggle-status-btn:hover {
    background-color: #3f51b5;
}

.delete-milestone-btn {
    background-color: #ef5350;
    color: white;
}

.delete-milestone-btn:hover {
    background-color: #e53935;
}

/* Processing state for buttons */
button.processing {
    position: relative;
    color: transparent !important;
    background-color: #888 !important;
    pointer-events: none;
    border: 1px solid #777 !important;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2) !important;
    min-width: 120px;  /* Ensure enough space for spinner */
    transition: all 0.3s ease;
}

button.processing::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-top: -8px;
    margin-left: -8px;
    border-radius: 50%;
    border: 3px solid #fff;
    border-color: #fff transparent #fff transparent;
    animation: processing-spinner 1.2s linear infinite;
}

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

/* Disabled buttons */
button:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* دکمه‌های مخصوص برای کارت‌های مایلستون */
.milestone-card .btn-secondary,
.milestone-card .btn-danger {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    min-width: 100px;
    color: #fff;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.1);
}

.milestone-card .btn-secondary {
    background: linear-gradient(135deg, #64748b 0%, #475569 100%);
}

.milestone-card .btn-secondary:hover {
    background: linear-gradient(135deg, #475569 0%, #334155 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}

.milestone-card .btn-danger {
    background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
}

.milestone-card .btn-danger:hover {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 10px rgba(239, 68, 68, 0.3);
}

/* Override for action buttons inside milestone card */
.milestone-card .action-buttons {
    justify-content: flex-end;
    padding-top: 15px;
    gap: 10px;
}