:root {
    /* Light theme */
    --primary-color: #4a90e2;
    --secondary-color: #f5f6fa;
    --accent-color: #2ecc71;
    --text-color: #2c3e50;
    --background-color: #f0f2f5;
    --card-bg: #ffffff;
    --input-border: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --hover-color: #3498db;
}

[data-theme="dark"] {
    --primary-color: #3498db;
    --secondary-color: #2c3e50;
    --accent-color: #2ecc71;
    --text-color: #ecf0f1;
    --background-color: #1a1a1a;
    --card-bg: #2c3e50;
    --input-border: #34495e;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --hover-color: #2980b9;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--card-bg);
    border-radius: 20px;
    box-shadow: 0 4px 6px var(--shadow-color);
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
}

h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.subtitle {
    color: var(--text-color);
    opacity: 0.8;
    font-size: 1.1rem;
}

.user-input-form {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    margin-bottom: 2rem;
}

.form-group {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.input-wrapper {
    flex: 1;
    min-width: 250px;
    position: relative;
}

.input-wrapper i {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-color);
}

.input-field {
    width: 100%;
    padding: 0.8rem 1rem 0.8rem 2.8rem;
    border: 2px solid var(--input-border);
    border-radius: 10px;
    font-size: 1rem;
    background-color: var(--card-bg);
    color: var(--text-color);
    transition: all 0.3s ease;
}

.input-field:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.1);
    outline: none;
}

.generate-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 10px;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.generate-btn:hover {
    background-color: var(--hover-color);
    transform: translateY(-2px);
}

.excuse-container {
    background-color: var(--card-bg);
    border-radius: 15px;
    padding: 1.5rem;
    margin-top: 2rem;
    box-shadow: 0 2px 4px var(--shadow-color);
    transition: all 0.3s ease;
    animation: slideIn 0.5s ease forwards;
}

.excuse-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.excuse-greeting {
    font-size: 1.1rem;
    line-height: 1.4;
}

.excuse-main {
    font-size: 1.2rem;
    line-height: 1.6;
    color: var(--text-color);
    padding: 1rem 0;
    border-top: 1px solid var(--input-border);
    border-bottom: 1px solid var(--input-border);
}

.excuse-main em {
    font-style: italic;
    color: var(--primary-color);
}

.excuse-main strong {
    font-weight: 600;
    color: var(--accent-color);
}

.excuse-closing {
    font-size: 1.1rem;
    line-height: 1.4;
    text-align: right;
}

.excuse-metadata {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--input-border);
    font-size: 0.9rem;
    color: var(--text-color);
    opacity: 0.8;
}

.metadata-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.metadata-item i {
    font-size: 1rem;
}

.highlight {
    background: linear-gradient(120deg, rgba(var(--primary-color-rgb), 0.2) 0%, rgba(var(--primary-color-rgb), 0.1) 100%);
    padding: 0.2em 0.4em;
    border-radius: 4px;
}

.excuse-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--input-border);
}

.excuse-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.action-btn:hover {
    background-color: var(--secondary-color);
    transform: scale(1.1);
}

.excuse-text {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-color);
    padding: 1rem 0;
}

.loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin: 2rem 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--secondary-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.hidden {
    display: none !important;
}

/* Modal Styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    position: relative;
    width: 90%;
    max-width: 500px;
}

.share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

.share-btn {
    flex: 1;
    min-width: 120px;
    padding: 0.8rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-size: 1rem;
    color: white;
    transition: all 0.3s ease;
}

.whatsapp { background-color: #25D366; }
.twitter { background-color: #1DA1F2; }
.email { background-color: #EA4335; }

.share-btn:hover {
    transform: translateY(-2px);
    filter: brightness(1.1);
}

.close-modal {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    font-size: 1.5rem;
}

/* Theme Toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--secondary-color);
    transition: .4s;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: var(--primary-color);
    transition: .4s;
}

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--accent-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* Notification */
.notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 1rem 2rem;
    background-color: var(--accent-color);
    color: white;
    border-radius: 8px;
    transform: translateY(150%);
    transition: transform 0.3s ease;
    z-index: 1000;
}

.notification.show {
    transform: translateY(0);
}

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

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

    .input-wrapper {
        min-width: 100%;
    }

    h1 {
        font-size: 2rem;
    }
}

/* Saved Excuses Styles */
.saved-excuses {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid var(--input-border);
}

.saved-excuses h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-color);
    margin-bottom: 1rem;
}

.saved-excuses h3::before {
    content: '📚';
    font-size: 1.2em;
}

.saved-excuses-list {
    display: grid;
    gap: 1rem;
    max-height: 400px;
    overflow-y: auto;
    padding-right: 0.5rem;
}

.saved-excuse-item {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1rem;
    position: relative;
    border: 1px solid var(--input-border);
    transition: all 0.3s ease;
    animation: slideIn 0.3s ease-out;
}

.saved-excuse-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.saved-excuse-item p {
    color: var(--text-color);
    font-size: 1rem;
    line-height: 1.5;
    margin-bottom: 0.5rem;
}

.saved-excuse-item small {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.excuse-metadata {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    border-top: 1px solid var(--input-border);
}

.excuse-metadata span {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.excuse-metadata i {
    color: var(--primary-color);
}

.tone-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 500;
    gap: 0.25rem;
}

.tone-badge.funny {
    background-color: #FFE0E0;
    color: #FF6B6B;
}

.tone-badge.professional {
    background-color: #E3F2FD;
    color: #4A90E2;
}

.tone-badge.bizarre {
    background-color: #F3E5F5;
    color: #9B59B6;
}

.tone-badge.dramatic {
    background-color: #FFF3E0;
    color: #E67E22;
}

.saved-excuse-actions {
    display: flex;
    gap: 0.5rem;
    position: absolute;
    top: 1rem;
    right: 1rem;
    opacity: 0;
    transition: opacity 0.2s ease;
}

.saved-excuse-item:hover .saved-excuse-actions {
    opacity: 1;
}

.saved-excuse-actions button {
    background: var(--card-bg);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s ease;
}

.saved-excuse-actions button:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: scale(1.05);
}

.saved-excuse-actions .delete-btn:hover {
    background: #ff4444;
    border-color: #ff4444;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scrollbar Styles */
.saved-excuses-list::-webkit-scrollbar {
    width: 8px;
}

.saved-excuses-list::-webkit-scrollbar-track {
    background: var(--bg-color);
    border-radius: 4px;
}

.saved-excuses-list::-webkit-scrollbar-thumb {
    background: var(--input-border);
    border-radius: 4px;
}

.saved-excuses-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Empty State */
.no-excuses {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-style: italic;
    background: var(--card-bg);
    border-radius: 12px;
    border: 2px dashed var(--input-border);
}