/* Task Manager Styles */
:root {
    --bg-dark: #0a0a0a;
    --bg-secondary: #1a1a2e;
    --electric-blue: #00FFFF;
    --neon-purple: #8B00FF;
    --text-light: #ffffff;
    --text-gray: #cccccc;
    --accent-gold: #FFD700;
    --gradient: linear-gradient(135deg, #01257D, #00FFFF);
    --success-green: #4CAF50;
    --warning-orange: #FF9800;
    --error-red: #f44336;
    --transition: all 0.3s ease;
    --shadow: 0 10px 30px rgba(0, 255, 255, 0.3);
}

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

body {
    font-family: 'Roboto', sans-serif;
    background: var(--bg-dark);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Header */
.header {
    background: rgba(26, 26, 46, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--electric-blue);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-family: 'Orbitron', monospace;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--electric-blue);
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

.nav-link {
    color: var(--text-gray);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--electric-blue);
    background: rgba(0, 255, 255, 0.1);
}

/* Container */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 2rem;
    min-height: calc(100vh - 100px);
}

/* Hero Section */
.hero-section {
    text-align: center;
    margin-bottom: 3rem;
}

.hero-section h1 {
    font-family: 'Orbitron', monospace;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-section p {
    font-size: 1.2rem;
    color: var(--text-gray);
}

/* Task Input Section */
.task-input-section {
    background: rgba(26, 26, 46, 0.8);
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    border: 2px solid var(--electric-blue);
}

.add-task-form {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

#taskInput {
    flex: 1;
    min-width: 300px;
    padding: 1rem;
    border: 2px solid var(--electric-blue);
    border-radius: 10px;
    background: rgba(26, 26, 46, 0.8);
    color: var(--text-light);
    font-size: 1rem;
}

#taskInput:focus {
    outline: none;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.5);
}

#taskPriority {
    padding: 1rem;
    border: 2px solid var(--electric-blue);
    border-radius: 10px;
    background: rgba(26, 26, 46, 0.8);
    color: var(--text-light);
    font-size: 1rem;
    cursor: pointer;
}

#addTaskBtn {
    padding: 1rem 2rem;
    background: var(--gradient);
    border: none;
    border-radius: 10px;
    color: var(--text-light);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

#addTaskBtn:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 35px rgba(0, 255, 255, 0.4);
}

/* Task Filters */
.task-filters {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    padding: 0.8rem 1.5rem;
    border: 2px solid var(--electric-blue);
    border-radius: 25px;
    background: transparent;
    color: var(--electric-blue);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--electric-blue);
    color: var(--bg-dark);
    box-shadow: 0 5px 15px rgba(0, 255, 255, 0.3);
}

/* Task Stats */
.task-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: rgba(26, 26, 46, 0.8);
    border-radius: 15px;
    padding: 1.5rem;
    text-align: center;
    border: 2px solid transparent;
    transition: var(--transition);
}

.stat-card:hover {
    border-color: var(--electric-blue);
    box-shadow: var(--shadow);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--electric-blue);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* Task List */
.task-list {
    background: rgba(26, 26, 46, 0.5);
    border-radius: 15px;
    padding: 1rem;
    min-height: 300px;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-gray);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: var(--electric-blue);
}

.empty-state h3 {
    margin-bottom: 1rem;
    color: var(--text-light);
}

/* Task Item */
.task-item {
    background: rgba(26, 26, 46, 0.8);
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1rem;
    border: 2px solid transparent;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: slideIn 0.3s ease;
}

.task-item:hover {
    border-color: var(--electric-blue);
    box-shadow: 0 5px 15px rgba(0, 255, 255, 0.2);
}

.task-item.completed {
    opacity: 0.7;
    border-color: var(--success-green);
}

.task-item.completed .task-text {
    text-decoration: line-through;
    color: var(--text-gray);
}

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

.task-checkbox {
    width: 24px;
    height: 24px;
    border: 2px solid var(--electric-blue);
    border-radius: 5px;
    background: transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.task-checkbox.checked {
    background: var(--success-green);
    border-color: var(--success-green);
}

.task-checkbox i {
    color: var(--text-light);
    font-size: 0.8rem;
}

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

.task-text {
    flex: 1;
    font-size: 1rem;
    color: var(--text-light);
}

.task-priority {
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
}

.task-priority.high {
    background: var(--error-red);
    color: white;
}

.task-priority.medium {
    background: var(--warning-orange);
    color: white;
}

.task-priority.low {
    background: var(--success-green);
    color: white;
}

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

.task-action-btn {
    width: 35px;
    height: 35px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 0.9rem;
}

.edit-btn {
    background: var(--warning-orange);
    color: white;
}

.edit-btn:hover {
    background: #FF8F00;
    transform: scale(1.1);
}

.delete-btn {
    background: var(--error-red);
    color: white;
}

.delete-btn:hover {
    background: #d32f2f;
    transform: scale(1.1);
}

.task-date {
    font-size: 0.8rem;
    color: var(--text-gray);
    margin-left: auto;
}

/* Edit Task Form */
.edit-task-form {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    flex: 1;
}

.edit-task-input {
    flex: 1;
    padding: 0.5rem;
    border: 2px solid var(--electric-blue);
    border-radius: 5px;
    background: rgba(26, 26, 46, 0.8);
    color: var(--text-light);
    font-size: 0.9rem;
}

.save-edit-btn,
.cancel-edit-btn {
    width: 30px;
    height: 30px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    transition: var(--transition);
}

.save-edit-btn {
    background: var(--success-green);
    color: white;
}

.cancel-edit-btn {
    background: var(--error-red);
    color: white;
}

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

    .hero-section h1 {
        font-size: 2rem;
    }

    .add-task-form {
        flex-direction: column;
        align-items: stretch;
    }

    #taskInput {
        min-width: auto;
    }

    .task-filters {
        flex-direction: column;
    }

    .filter-btn {
        text-align: center;
    }

    .task-item {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .task-content {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }

    .task-actions {
        justify-content: flex-end;
    }

    .navbar {
        padding: 0 1rem;
    }

    .nav-brand span {
        display: none;
    }
}