:root {
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --text-white: #ffffff;
    --text-muted: #cbd5e1;
}

body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0f172a, #1e293b, #0f172a);
    min-height: 100vh;
    color: var(--text-white);
}

.app-container {
    padding: 1.5rem;
}

.max-width-wrapper {
    max-width: 1000px;
    margin: 0 auto;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    margin-bottom: 1.5rem;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

input, select {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: 0.5rem;
    color: white;
    box-sizing: border-box;
}

input::placeholder { color: var(--text-muted); }

.grid-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.filters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
    margin-bottom: 2rem;
}

.button-group { display: flex; gap: 0.75rem; }

button {
    cursor: pointer;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    border: none;
    font-weight: 600;
    transition: 0.2s;
}

.primary-btn { background: #3b82f6; color: white; flex: 1; }
.primary-btn:hover { background: #2563eb; }

.secondary-btn { background: #475569; color: white; }

.task-card {
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    animation: fadeIn 0.3s ease-out;
}

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

.completed { text-decoration: line-through; color: #94a3b8; }

.hidden { display: none; }

.btn-sm { padding: 0.4rem 0.8rem; font-size: 0.8rem; margin-left: 0.5rem; }
.delete-btn { background: #ef4444; color: white; }