:root {
    --primary-gradient: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    --card-gradient: linear-gradient(to right, #4b6cb7, #182848);
}
.header-title {
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}
.card {
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
    border: none;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.95);
    transition: transform 0.3s ease;
}

.card:hover {
    /*transform: translateY(-5px);*/
}

.card-header {
    background: var(--card-gradient);
    color: white;
    padding: 20px;
    border-bottom: none;
}

.btn-primary {
    background: var(--card-gradient);
    border: none;
    padding: 12px 30px;
    font-size: 18px;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.btn-primary:after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 20px;
    height: 200%;
    background: rgba(255,255,255,0.3);
    transform: rotate(25deg);
    transition: all 0.4s;
}

.btn-primary:hover:after {
    left: 120%;
}

.btn-outline-secondary {
    transition: all 0.3s;
}

.textarea-container {
    position: relative;
    margin-bottom: 20px;
}

textarea {
    min-height: 150px;
    border-radius: 10px;
    padding: 15px;
    font-size: 16px;
    resize: vertical;
    transition: all 0.3s;
}

textarea:focus {
    box-shadow: 0 0 0 0.25rem rgba(75, 108, 183, 0.25);
    border-color: #4b6cb7;
}
.result-container {
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 20px;
    min-height: 230px;
    border: 1px solid #e9ecef;
    transition: all 0.3s;
}

.footer {
    color: rgba(255, 255, 255, 0.7);
    text-align: center;
    margin-top: 30px;
    font-size: 14px;
}

.feature-icon {
    background: var(--card-gradient);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    color: white;
    font-size: 24px;
    transition: all 0.3s;
}

.feature-card {
    transition: transform 0.3s;
    border: none;
    border-radius: 12px;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-10px);
}

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

.btn-action-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.action-btn {
    flex: 1;
    min-width: 120px;
}

.usage-step {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    background: rgba(255,255,255,0.1);
    padding: 12px 20px;
    border-radius: 10px;
}

.step-number {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: white;
    color: #4b6cb7;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    font-weight: bold;
}

.char-count-badge {
    background: #e9ecef;
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 0.85rem;
}

.highlight {
    animation: highlight 1.5s ease;
}

@keyframes highlight {
    0% { background-color: rgba(75, 108, 183, 0.3); }
    100% { background-color: transparent; }
}

.tooltip-icon {
    color: #6c757d;
    margin-left: 5px;
    cursor: help;
}

@media (max-width: 768px) {
    .btn-action-group {
        flex-direction: column;
    }

    .action-btn {
        width: 100%;
    }
}