@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --bg-gradient: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --card-bg: rgba(255, 255, 255, 0.95);
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    line-height: 1.5;
}

.container {
    width: 100%;
    max-width: 450px;
    padding: 2rem;
}

.card {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

h1 {
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--primary-color);
}

.form-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

input[type="date"] {
    width: 100%;
    padding: 0.75rem;
    background: #f9fafb;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s, ring 0.2s;
}

input[type="date"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.btn {
    width: 100%;
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

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

.btn-secondary {
    background-color: #f3f4f6;
    color: var(--text-main);
}

.btn-secondary:hover {
    background-color: #e5e7eb;
}

.btn:active {
    transform: translateY(0);
}

footer {
    margin-top: 2rem;
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-muted);
}