/* style.css */
:root {
    --primary: #4361ee;
    --secondary: #3f37c9;
    --accent: #4895ef;
    --light: #f8f9fa;
    --dark: #212529;
    --success: #06d6a0;
    --danger: #ef476f;
    --warning: #ffd166;
    --info: #118ab2;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    padding: 20px;
    color: var(--dark);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

header {
    text-align: center;
    padding: 30px 0;
    margin-bottom: 30px;
}

header h1 {
    font-size: 2.8rem;
    margin-bottom: 10px;
    background: linear-gradient(45deg, var(--secondary), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

header p {
    font-size: 1.2rem;
    color: var(--dark);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.app-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 25px;
    margin-bottom: 40px;
}

@media (max-width: 900px) {
    .app-container {
        grid-template-columns: 1fr;
    }
}

.input-section {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.input-section h2 {
    margin-bottom: 20px;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 14px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1em;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--accent);
    outline: none;
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.2);
}

button {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: 14px 25px;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
}

button:hover {
    transform: translateY(-3px);
    box-shadow: 0 7px 15px rgba(67, 97, 238, 0.3);
}

.export-btn {
    background: linear-gradient(45deg, var(--success), var(--info));
    margin-top: 15px;
}

.notes-section {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.notes-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.notes-header h2 {
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.filter-group label {
    font-weight: 600;
    color: var(--dark);
}

.filter-group select {
    padding: 8px 12px;
    border-radius: 8px;
    border: 2px solid #e2e8f0;
}

.notes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.note-card {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
    background: white;
    display: flex;
    flex-direction: column;
}

.note-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.preview-container {
    height: 200px;
    position: relative;
    overflow: hidden;
}

.website-preview {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.youtube-preview {
    width: 100%;
    height: 100%;
    display: none;
}

.link-icon {
    position: absolute;
    top: 10px;
    right: 10px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 18px;
    text-decoration: none;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.link-icon:hover {
    transform: scale(1.1);
    background: white;
    color: var(--secondary);
}

.note-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.note-content h3 {
    margin-bottom: 10px;
    color: var(--dark);
    font-size: 1.3rem;
    line-height: 1.3;
}

.note-text {
    color: #4a5568;
    line-height: 1.6;
    margin-bottom: 15px;
    font-size: 1rem;
    flex-grow: 1;
}

.note-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.category-tag {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.delete-btn {
    background: var(--danger);
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 1.1rem;
    transition: all 0.2s ease;
    padding: 5px;
    border-radius: 50%;
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.delete-btn:hover {
    background-color: rgba(239, 71, 111, 0.1);
    transform: scale(1.1);
}

.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: #718096;
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 20px;
    color: #cbd5e0;
}

.empty-state h3 {
    margin-bottom: 10px;
    font-size: 1.8rem;
    color: var(--dark);
}

.empty-state p {
    font-size: 1.1rem;
    max-width: 500px;
    margin: 0 auto;
}

footer {
    text-align: center;
    padding: 20px;
    color: var(--dark);
    font-size: 0.9rem;
    margin-top: 20px;
}

.instructions {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin-top: 30px;
}

.instructions h2 {
    margin-bottom: 20px;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.step {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 15px;
    transition: all 0.3s ease;
}

.step:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.step-number {
    background: var(--accent);
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.step-content h3 {
    margin-bottom: 8px;
    color: var(--dark);
}

.step-content p {
    color: #4a5568;
    line-height: 1.6;
}
.logo {
    width: 50px;
    height: 50px;
    margin-right: 15px;
}

/* Category colors */
.category-tag[data-category="generale"] { background-color: #4361ee; }
.category-tag[data-category="lavoro"] { background-color: #06d6a0; }
.category-tag[data-category="studio"] { background-color: #118ab2; }
.category-tag[data-category="hobby"] { background-color: #ffd166; color: #333; }
.category-tag[data-category="altro"] { background-color: #ef476f; }