:root {
    /* Colors*/
    --primary-color: #4a90e2; 
    --button-color: #004cff;
    --button-hover: #4acadb;
    --background-white: #f4f1f1;
    --background-gray: #f0f0f2;

    --text-dark: #333;
    --text-light: #FFFFFF;
    --text-placeholder: #a0a0a0;
    --input-border: #333;
    --input-focus: #5d7ef5;

    /*Spacing*/
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 2.5rem;


    /*Typography*/
    --font: sans-serif;

    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-title: 3.5rem;
    --font-weight-normal: 400;
    --font-weight-semibold: 600;
    --font-weight-black: 900;

    /*Effects*/
    --border-radius: 0.5rem;
    --border-radius-lg: 1.25rem;
    --transition: 0.3s ease;
    
}

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

html {
    font-size: 16px;
}

body {
    font-family:  var(--font);
    font-size: var(--font-size-base);
    color: var(--text-dark);
    background-color: var(--background-gray);
    min-height: 100vh;
    line-height: 1.5;

/* Layout with CSS Grid*/


    font-family: 'Comfortaa', sans-serif;
    display: grid !important;
    grid-template-columns: 40% 60% !important;
    padding: 1.25rem;
}

/* Left Section*/

#login-info {
    background: linear-gradient(165deg, #6eb1f7 0%, #4a8fe8 50%, #3d82dd 100%);
    color: var(--text-light);
    padding: var(--spacing-xl) 3rem;
    border-radius: var(--border-radius-lg);
    box-shadow: 0 2px 8px #0000000f;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: flex-start;

}

#login-info h1 {
    font-size: var(--font-size-title);
    font-weight: var(--font-weight-black);
    line-height: 1.1;
    letter-spacing: -0.023em;
    margin-bottom: var(--spacing-lg);
}

#login-info p {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-normal);
    line-height: 1.7;
    max-width: 28rem;
    text-align: left;
}

#login-info em {
    font-style: italic;
    font-weight: 700;
}

/* Right Section*/

#login-form {
    background-color: var(--background-gray);
    padding: var(--spacing-xl);

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

#login-form h2 {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

form {
    width: 100%;
    max-width: 42rem;
    padding: 0 var(--spacing-xl);
}

/* Form Field Styling */

form-field {
    display:block;
    margin-bottom: var(--spacing-lg);
}

form-field:last-of-type {
    margin-bottom: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

label{
    display: block;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-dark);
    letter-spacing: -0.01em;
    margin-bottom: 0.625rem;
}

/* Input Styling */
input[type="email"], input[type="password"] 
{
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: var(--font-size-base);
    font-family: var(--font);
    color: var(--text-dark);
    background-color: var(--background-white);
    border: 2px solid var(--input-border);
    border-radius: var(--border-radius);

    transition: border-color var(--transition), box-shadow var(--transition);
}

/* Input Focus State */

input[type="email"]:focus, input[type="password"]:focus
{
    outline: none;
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(93,126,245,0.1);
}

/* Placeholder text Styling */
input::placeholder {
    color: var(--text-placeholder);
    opacity: 1;
}

/* Invalid input styling */
input[type="email"]:invalid:not(:placeholder-shown),
input[type="password"]:invalid:not(:placeholder-shown) {
    border-color: #dc3545;
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

/* Valid input styling (optional) */
input[type="email"]:valid:not(:placeholder-shown),
input[type="password"]:valid:not(:placeholder-shown) {
    border-color: #28a745;
}

/* Buttone Styling */
button[type="submit"] {
    padding: 0.875rem 2.5rem;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    font-family: var(--font);
    color: var(--text-light);
    background-color: var(--button-color);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    display: inline-block;

    transition: background-color var(--transition), transform var(--transition), box-shadow var(--transition);

}


/* Hover State */

button [type="submit"]:hover {
    background-color: var(--background-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(93,126,245,0.3);
}

button [type="submit"]:active {
    transform: translateY(0);
}

/* Password Recovery Link */

.password-recovery {
    display: inline-block;
    margin-left: auto;
    vertical-align: middle;
    flex: 1;
    text-align: right;
}

.password-recovery a {
    font-size: var(--font-size-base);
    color: var(--button-color);
    text-decoration: none;
    font-weight: 500;
}

.password-recovery a:hover {
    color: var(--button-hover);
    text-decoration: underline;
}