:root {
    /* Tema Kawaii Verde & Roxo Pastel */
    --primary-color-light: #b5ead7; /* verde menta pastel */
    --primary-variant-color-light: #a3c9a8; /* verde pastel mais escuro */
    --secondary-color-light: #d1c4e9; /* roxo lavanda pastel */
    --background-color-light: #f3f0ff; /* fundo roxinho pastel */
    --surface-color-light: #f8faff; /* superfície bem clara */
    --error-color-light: #e1bee7; /* roxo claro para erro (kawaii) */
    --success-color-light: #b5ead7; /* verde menta pastel */
    --on-primary-color-light: #f3f0ff; /* texto sobre verde */
    --on-secondary-color-light: #b39ddb; /* texto sobre roxo */
    --on-background-color-light: #7e57c2; /* texto sobre fundo */
    --on-surface-color-light: #9575cd; /* texto sobre superfície */
    --text-color-light: #7e57c2; /* roxo médio para texto */
    --text-secondary-light: #81c784; /* verde clarinho para detalhes */
    --border-color-light: #e1bee7; /* borda roxinha */
    --input-bg-light: #e8f5e9; /* input verde pastel */
    --card-shadow-light: 0 4px 12px rgba(179, 157, 219, 0.15);
    --hover-bg-light: #e1bee7;

    /* Tema Kawaii Rosinha Escuro */
    --primary-color-dark: #ff69b4;
    --primary-variant-color-dark: #e75480;
    --secondary-color-dark: #b48ec7;
    --background-color-dark: #2d142c;
    --surface-color-dark: #3e1f47;
    --error-color-dark: #ff6f91;
    --success-color-dark: #b5ead7;
    --on-primary-color-dark: #fff0fa;
    --on-secondary-color-dark: #fff0fa;
    --on-background-color-dark: #ffe0f7;
    --on-surface-color-dark: #ffe0f7;
    --text-color-dark: #ffe0f7;
    --text-secondary-dark: #ffd6ec;
    --border-color-dark: #b48ec7;
    --input-bg-dark: #4a274a;
    --card-shadow-dark: 0 4px 12px rgba(255, 182, 213, 0.25);
    --hover-bg-dark: #4a274a;

    /* Tema Verde (Nature) */
    --primary-color-green: #2e7d32;
    --primary-variant-color-green: #1b5e20;
    --secondary-color-green: #66bb6a;
    --background-color-green: #f1f8e9;
    --surface-color-green: #ffffff;
    --error-color-green: #d32f2f;
    --success-color-green: #388e3c;
    --on-primary-color-green: #ffffff;
    --on-secondary-color-green: #000000;
    --on-background-color-green: #1b5e20;
    --on-surface-color-green: #2e7d32;
    --text-color-green: #1b5e20;
    --text-secondary-green: #4caf50;
    --border-color-green: #c8e6c9;
    --input-bg-green: #e8f5e8;
    --card-shadow-green: 0 4px 12px rgba(46, 125, 50, 0.1);
    --hover-bg-green: #f3e5f5;
    /* Tamanhos */
    --border-radius: 12px;
    --card-spacing: 16px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: var(--background-color-light);
    color: var(--text-color-light);
    transition: all 0.3s ease;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Use as variáveis de tema claro por padrão */
body {
    --primary-color: var(--primary-color-light);
    --primary-variant-color: var(--primary-variant-color-light);
    --secondary-color: var(--secondary-color-light);
    --background-color: var(--background-color-light);
    --surface-color: var(--surface-color-light);
    --error-color: var(--error-color-light);
    --success-color: var(--success-color-light);
    --on-primary-color: var(--on-primary-color-light);
    --on-secondary-color: var(--on-secondary-color-light);
    --on-background-color: var(--on-background-color-light);
    --on-surface-color: var(--on-surface-color-light);
    --text-color: var(--text-color-light);
    --text-secondary: var(--text-secondary-light);
    --border-color: var(--border-color-light);
    --input-bg: var(--input-bg-light);
    --card-shadow: var(--card-shadow-light);
    --hover-bg: var(--hover-bg-light);
}

/* Tema escuro */
body.dark-mode {
    --primary-color: var(--primary-color-dark);
    --primary-variant-color: var(--primary-variant-color-dark);
    --secondary-color: var(--secondary-color-dark);
    --background-color: var(--background-color-dark);
    --surface-color: var(--surface-color-dark);
    --error-color: var(--error-color-dark);
    --success-color: var(--success-color-dark);
    --on-primary-color: var(--on-primary-color-dark);
    --on-secondary-color: var(--on-secondary-color-dark);
    --on-background-color: var(--on-background-color-dark);
    --on-surface-color: var(--on-surface-color-dark);
    --text-color: var(--text-color-dark);
    --text-secondary: var(--text-secondary-dark);
    --border-color: var(--border-color-dark);
    --input-bg: var(--input-bg-dark);
    --card-shadow: var(--card-shadow-dark);
    --hover-bg: var(--hover-bg-dark);

    background-color: var(--background-color);
    color: var(--text-color);
}

/* Tema Verde (Nature) */
body.green-mode {
    --primary-color: var(--primary-color-green);
    --primary-variant-color: var(--primary-variant-color-green);
    --secondary-color: var(--secondary-color-green);
    --background-color: var(--background-color-green);
    --surface-color: var(--surface-color-green);
    --error-color: var(--error-color-green);
    --success-color: var(--success-color-green);
    --on-primary-color: var(--on-primary-color-green);
    --on-secondary-color: var(--on-secondary-color-green);
    --on-background-color: var(--on-background-color-green);
    --on-surface-color: var(--on-surface-color-green);
    --text-color: var(--text-color-green);
    --text-secondary: var(--text-secondary-green);
    --border-color: var(--border-color-green);
    --input-bg: var(--input-bg-green);
    --card-shadow: var(--card-shadow-green);
    --hover-bg: var(--hover-bg-green);

    background-color: var(--background-color);
    color: var(--text-color);
}


/* Layout principal */
.app-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.app-header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px 0;
}

.app-footer {
    text-align: center;
    margin-top: auto;
    padding: 20px 0;
    font-size: 0.9em;
    color: var(--text-secondary-light);
}

.cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 0 auto;
    max-width: 1200px;
    width: 100%;
}

/* Cards */
.card {
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow-light);
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    transform: translateY(0);
    animation: fadeIn 0.5s ease-out;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    border-bottom: 1px solid var(--border-color-light);
}

.card-title {
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-icon {
    font-size: 1.2em;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--primary-color-light);
    color: var(--on-primary-color-light);
    border-radius: 50%;
}

.card-footer {
    border-top: 1px solid var(--border-color-light);
    padding: 12px 16px;
    font-size: 0.9em;
    color: var(--text-secondary-light);
}

.subtitle {
    color: var(--text-secondary-light);
    font-size: 1.1em;
    margin-top: 8px;
}

h1, h2 {
    color: var(--primary-color);
    margin-top: 0;
}

h1 {
    text-align: center;
    margin-bottom: 10px;
    font-size: 2.5em;
}

h2 {
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
    font-size: 1.8em;
}

section {
    margin-bottom: 30px;
    padding: 20px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

input[type="text"] {
    width: calc(100% - 22px); /* Consider padding and border */
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1em;
    background-color: var(--input-bg);
    color: var(--text-color);
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-color-light);
}

body.dark-mode input[type="text"]:focus {
    box-shadow: 0 0 0 2px var(--primary-color-dark);
}


button {
    background-color: var(--primary-color);
    color: var(--on-primary-color);
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background-color 0.2s ease, transform 0.1s ease;
    margin-right: 5px; /* Espaçamento entre botões */
}

button:hover {
    background-color: var(--primary-variant-color);
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
}

/* Todo List Específico */
.task-input-container {
    display: flex;
    padding: 0 16px 16px;
    height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all 0.3s ease;
}

.task-input-container.active {
    height: 50px;
    opacity: 1;
    padding: 4px 10px;

}

.task-input-container input[type="text"] {
    flex-grow: 1;
    margin-right: 10px;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background-color: var(--input-bg);
    color: var(--text-color);
    margin-top: 12px;
}

.add-task-button {
    background-color: var(--primary-color);
    color: var(--on-primary-color);
    border: none;
    border-radius: 20px;
    padding: 8px 15px;
    cursor: pointer;
    font-weight: 500;
}

.tasks-list {
    list-style-type: none;
    padding: 0 16px;
    margin-bottom: 16px;
    overflow-y: auto;
    max-height: 350px;
}

.tasks-list li {
    padding: 12px 8px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
    border-radius: 8px;
}

#tasks li:last-child {
    border-bottom: none;
}

#tasks li:hover {
    background-color: var(--input-bg); /* Um pouco de destaque no hover */
}

#tasks li button:hover {
    border-width: 2px;  
}

/* Pomodoro Timer Específico */
.timer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 0;
}

.timer-display {
    font-size: 4em;
    margin: 10px 0 20px;
    font-weight: bold;
    color: var(--primary-color);
    font-family: 'Roboto Mono', monospace;
}

.timer-controls {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.timer-modes {
    display: flex;
    justify-content: center;
    margin-top: 10px;
    padding: 10px 0;
}

.timer-mode-item {
    padding: 8px 16px;
    margin: 0 5px;
    border-radius: 20px;
    background-color: transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    font-size: 0.9em;
    color: var(--text-secondary-light);
}

.timer-mode-item.active {
    background-color: var(--primary-color);
    color: var(--on-primary-color);
}

.timer-mode-item:hover:not(.active) {
    background-color: var(--hover-bg-light);
}

/* Media Player Específico */
.media-container {
    padding: 16px;
}

.media-player {
    position: relative;
    width: 100%;
    border-radius: var(--border-radius);
    overflow: hidden;
}

.media-player iframe {
    border: none;
    width: 100%;
    border-radius: var(--border-radius);
    display: block;
}

.media-notification {
    position: fixed;
    bottom: -100px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--surface-color);
    color: var(--text-color);
    padding: 12px 20px;
    border-radius: 25px;
    box-shadow: var(--card-shadow-light);
    transition: all 0.3s ease;
    z-index: 1000;
}

.media-notification.show {
    bottom: 20px;
}

/* Botões */
.icon-button {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    border: none;
    font-size: 1.2em;
    cursor: pointer;
    color: var(--text-color-light);
    transition: all 0.2s ease;
}

.icon-button:hover {
    background-color: var(--hover-bg-light);
    transform: translateY(-1px);
}

.primary-button {
    background-color: var(--primary-color);
    color: var(--on-primary-color);
    border: none;
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.primary-button:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.secondary-button {
    background-color: transparent;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    border-radius: 20px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.secondary-button:hover {
    background-color: var(--hover-bg-light);
}

/* Theme Selector */
.theme-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

#theme-toggle {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    cursor: pointer;
    box-shadow: var(--card-shadow);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4em;
    color: var(--text-color);
}

#theme-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.theme-options {
    position: absolute;
    top: 50px;
    right: 0;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    padding: 8px;
    display: none;
    flex-direction: column;
    gap: 4px;
    min-width: 120px;
}

.theme-options.show {
    display: flex;
}

.theme-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.1em;
    color: var(--text-color);
    transition: all 0.2s ease;
    text-align: left;
}

.theme-option:hover {
    background-color: var(--hover-bg);
}

.theme-option.active {
    background-color: var(--primary-color);
    color: var(--on-primary-color);
}

/* Tarefas concluídas */
.task-item.completed .task-text {
    text-decoration: line-through;
    color: var(--secondary-color);
    opacity: 0.7;
    transition: all 0.3s ease;
}

.task-item.completed {
    background-color: rgba(3, 218, 198, 0.05);
    border-left: 3px solid var(--success-color);
}

.task-item.completed .task-checkbox {
    background-color: var(--success-color);
    border-color: var(--success-color);
}

.task-item.completed .task-checkbox::after {
    content: '✓';
    color: white;
    font-weight: bold;
}

/* Checkbox personalizado para marcar tarefas completas */
.task-checkbox {
    margin-right: 12px;
    width: 22px;
    height: 22px;
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28);
    flex-shrink: 0;
    position: relative;
}

.task-checkbox:hover {
    transform: scale(1.15);
    border-color: var(--secondary-color);
}

.task-checkbox.checked {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: scale(1);
}

.task-checkbox::after {
    content: '✓';
    color: transparent;
    font-size: 12px;
    font-weight: bold;
    transition: color 0.2s ease;
}

.task-checkbox.checked::after {
    color: white;
}

/* Estilos responsivos */
@media (max-width: 768px) {
    .cards-container {
        grid-template-columns: 1fr;
    }
    
    .app-header {
        padding: 15px 0;
    }
    
    h1 {
        font-size: 2em;
    }
    
    .subtitle {
        font-size: 1em;
    }
}

/* Estilos específicos para extensão do Chrome */
@media (max-width: 400px) {
    body {
        padding: 10px;
    }
    
    .app-header {
        margin-bottom: 15px;
        padding: 10px 0;
    }
    
    h1 {
        font-size: 1.8em;
        margin-bottom: 5px;
    }
    
    .subtitle {
        font-size: 0.9em;
    }
    
    .cards-container {
        gap: 15px;
    }
    
    .timer-display {
        font-size: 3em;
    }
    
    .card-header {
        padding: 12px;
    }
    
    #theme-toggle {
        top: 10px;
        right: 10px;
        font-size: 0.8em;
    }
    
    .app-footer {
        padding: 10px 0;
        font-size: 0.8em;
    }
}

/* Ajuste do layout das tarefas para incorporar checkbox */
.task-item {
    display: flex;
    align-items: center;
    padding: 12px 10px;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.task-content {
    display: flex;
    align-items: center;
    flex-grow: 1;
}

.task-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
    margin-bottom: 5px;
}

.task-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.task-item:hover {
    background-color: var(--hover-bg);
    transform: translateY(-2px);
}

.task-text {
    cursor: pointer;
    flex-grow: 1;
    margin-right: 10px;
    transition: all 0.3s ease;
    word-break: break-word;
}

.task-buttons button, .edit-controls button {
    margin-left: 5px;
    font-size: 0.8em;
    padding: 4px 8px;
    border-radius: 4px;
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    transition: all 0.2s ease;
    cursor: pointer;
}

.task-buttons button:hover, .edit-controls button:hover {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.edit-input-field {
    flex-grow: 1;
    padding: 8px;
    margin-right: 10px; /* Espaço antes do botão Salvar */
    border: 1px solid var(--primary-color);
    border-radius: 4px;
    background-color: var(--input-bg);
    color: var(--text-color);
}

.edit-controls {
    display: flex;
    align-items: center;
}

/* Mensagem quando não há tarefas */
.empty-tasks-message {
    text-align: center;
    color: var(--text-secondary);
    padding: 30px 20px;
    font-style: italic;
}

/* Botões de ação para tarefas */
.task-buttons {
    display: flex;
    gap: 5px;
}

.task-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    font-size: 1em;
    transition: all 0.2s ease;
    background-color: transparent;
    color: var(--text-color);
}

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

.edit-btn {
    color: var(--secondary-color);
    border-color: var(--secondary-color) !important;
}

.delete-btn {
    color: var(--error-color);
    border-color: var(--error-color) !important;
    opacity: 0.7;
}

.delete-btn:hover {
    opacity: 1;
}

.save-btn {
    color: var(--success-color);
    border-color: var(--success-color) !important;
}

.cancel-btn {
    color: var(--text-secondary);
}

/* Estilo de edição de tarefas */
.edit-controls {
    display: flex;
    align-items: center;
    width: 100%;
}

.edit-input-field {
    flex-grow: 1;
    padding: 8px 12px;
    margin-right: 10px;
    border: 1px solid var(--secondary-color);
    border-radius: 20px;
    background-color: var(--input-bg);
    color: var(--text-color);
}