:root {
    --bg-primary: #121212;
    --bg-secondary: #1e1e1e;
    --bg-tertiary: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --accent-primary: #007aff;
    --border-color: #3c3c3c;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    --shadow-color: rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 420px;
}

.auth-wrapper {
    background-color: var(--bg-secondary);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 24px var(--shadow-color);
    text-align: center;
}

.header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 25px;
}

.header svg {
    width: 28px;
    height: 28px;
    fill: var(--accent-primary);
}

.header h3 {
    font-size: 24px;
    font-weight: 600;
}

h2 {
    font-size: 28px;
    margin-bottom: 10px;
}

.subtitle, .toggle-link-container, #logged-in-view p {
    color: var(--text-secondary);
    margin-bottom: 25px;
    line-height: 1.5;
}

#auth-form input {
    font-family: var(--font-family);
    width: 100%;
    padding: 14px;
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 16px;
}

#auth-form input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.3);
}

button {
    font-family: var(--font-family);
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    color: #ffffff;
    background-color: var(--accent-primary);
    transition: all 0.2s ease-in-out;
}

button:hover {
    opacity: 0.9;
}

.toggle-link-container {
    margin-top: 20px;
    margin-bottom: 0;
}

a {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 500;
}

a:hover {
    text-decoration: underline;
}

.error-message {
    background-color: rgba(255, 59, 48, 0.1);
    color: #ff453a;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 15px;
    font-size: 14px;
    border: 1px solid #ff453a;
}

.hidden {
    display: none !important;
}

#sign-out-btn {
    margin-top: 20px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
}