static/css/style.css

/* Default variables for light mode */
:root {
    --background-color: #f4f4f4;
    --text-color: #333333;
    --card-background: #ffffff;
    --input-background: #f0f2f5;
    --input-border: #e0e3e9;
    --input-text: #333333;
    --button-primary-bg: #5cb85c;
    --button-primary-text: white;
    --button-secondary-bg: #e0e3e9;
    --button-secondary-text: #4a5568;
    --border-color: #ddd;
    --separator-color: #e0e3e9;
    --error-color: #d9534f;
    --success-color: #5cb85c;
    --link-color: #3182ce;
    --header-color: #333;
    --hero-bg: #e7f3fe;
    --hero-color: #333;
    --welcome-bg: #e7f3fe;
    --logout-button-bg: #d9534f;
    --logout-button-hover: #c9302c;
}

/* Dark mode variables */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #1a202c;
        --text-color: #e2e8f0;
        --card-background: #2d3748;
        --input-background: #4a5568;
        --input-border: #4a5568;
        --input-text: #e2e8f0;
        --button-primary-bg: #6cb46c;
        --button-primary-text: white;
        --button-secondary-bg: #4a5568;
        --button-secondary-text: #e2e8f0;
        --border-color: #4a5568;
        --separator-color: #4a5568;
        --error-color: #fc8181;
        --success-color: #68d391;
        --link-color: #63b3ed;
        --header-color: #e2e8f0;
        --hero-bg: #2d3748;
        --hero-color: #e2e8f0;
        --welcome-bg: #2d3748;
        --logout-button-bg: #e53e3e;
        --logout-button-hover: #c53030;
    }
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    margin: 0;
    padding: 0;
}

h1, h2 {
    color: var(--header-color);
}

.container {
    width: 100%;
    max-width: 1000px;
    margin: 20px auto;
    padding: 20px;
}

.logo {
    text-align: center;
    margin-bottom: 30px;
}

.logo h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.logo p {
    font-size: 1.1rem;
    opacity: 0.8;
}

/* Auth container styles */
.auth-container {
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    overflow: hidden;
    background-color: var(--card-background);
    transition: box-shadow 0.3s ease, background-color 0.3s ease;
    margin-bottom: 30px;
}

@media (min-width: 768px) {
    .auth-container {
        flex-direction: row;
        height: 500px;
    }
}

.tabs {
    display: flex;
    border-bottom: 1px solid var(--separator-color);
}

.tab {
    padding: 15px 0;
    flex: 1;
    text-align: center;
    cursor: pointer;
    font-weight: 600;
    transition: background-color 0.3s ease;
}

.tab.active {
    border-bottom: 3px solid var(--button-primary-bg);
    color: var(--button-primary-bg);
}

.auth-forms {
    display: flex;
    flex: 1;
    flex-direction: column;
    padding: 30px;
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.hero {
    display: none;
    flex: 1;
    background-color: var(--hero-bg);
    color: var(--hero-color);
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

@media (min-width: 768px) {
    .hero {
        display: flex;
    }
}

.hero h2 {
    margin-bottom: 20px;
    color: var(--hero-color);
}

/* Form styles */
.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 7px;
    font-weight: 500;
}

input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 12px 15px;
    border-radius: 6px;
    border: 1px solid var(--input-border);
    background-color: var(--input-background);
    color: var(--input-text);
    font-size: 16px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

input:focus {
    outline: none;
    border-color: var(--button-primary-bg);
    box-shadow: 0 0 0 3px rgba(92, 184, 92, 0.25);
}

.button {
    display: inline-block;
    padding: 12px 20px;
    background-color: var(--button-primary-bg);
    color: var(--button-primary-text);
    border: none;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.3s ease, transform 0.1s ease;
    width: 100%;
    text-align: center;
}

.button:hover {
    opacity: 0.9;
}

.button:active {
    transform: translateY(1px);
}

/* Status messages */
.status-message {
    margin-top: 15px;
    color: var(--error-color);
    font-weight: bold;
    display: none;
}

.status-message.success {
    color: var(--success-color);
}

.error-message {
    color: var(--error-color);
    font-size: 14px;
    margin-top: 5px;
    display: none;
}

/* Welcome section */
#welcome-section {
    background-color: var(--welcome-bg);
    padding: 20px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
}

#logout-button {
    background-color: var(--logout-button-bg);
    margin-top: 15px;
    width: auto;
}

#logout-button:hover {
    background-color: var(--logout-button-hover);
}

hr {
    margin: 20px 0;
    border-color: var(--separator-color);
}

/* Notifications */
#notifications {
    margin-top: 15px;
    padding: 15px;
    border: 1px dashed var(--border-color);
    background-color: var(--card-background);
    min-height: 100px;
    max-height: 300px;
    overflow-y: auto;
}

#notifications p {
    margin: 5px 0;
    padding-bottom: 5px;
    border-bottom: 1px solid var(--separator-color);
}

#notifications p:last-child {
    border-bottom: none;
}