* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: Arial, sans-serif;
    background: #eef5ff;
    color: #17233c;
}
/* =========================
   NAVBAR
========================= */
.navbar {
    width: 96%;
    margin: 18px auto 0;
    background: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 28px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}
.logo-section {
    display: flex;
    align-items: center;
    gap: 12px;
}
.logo {
    font-size: 42px;
}
.logo-section h2 {
    color: #175ed8;
    font-size: 30px;
}
.logo-section p {
    color: #53617a;
    font-size: 15px;
}
nav {
    display: flex;
    align-items: center;
    gap: 40px;
}
nav a {
    text-decoration: none;
    color: #111b31;
    font-size: 17px;
}
.login-nav {
    border: 1px solid #1764e8;
    padding: 12px 25px;
    border-radius: 10px;
    color: #1764e8;
}
/* =========================
   MAIN CONTAINER
========================= */
.main-container {
    width: 96%;
    margin: 2px auto 0;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}
/* =========================
   LEFT SECTION
========================= */
.intro-section {
    padding: 55px 70px;
    background: #f7fbff;
}
.intro-section h1 {
    font-size: 45px;
    line-height: 1.15;
}
.blue-line {
    width: 70px;
    height: 4px;
    background: #1764e8;
    margin: 30px 0;
}
.description {
    max-width: 500px;
    font-size: 19px;
    line-height: 1.6;
    color: #3d4b65;
}
/* =========================
   ILLUSTRATION
========================= */
.illustration {
    width: 100%;
    height: 230px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 130px;
    position: relative;
}
.graduation-cap {
    position: absolute;
    font-size: 70px;
    right: 25%;
    bottom: 20px;
}
/* =========================
   FEATURES
========================= */
.features {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 15px;
}
.feature {
    text-align: center;
}
.feature-icon {
    width: 55px;
    height: 55px;
    margin: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #e9f1ff;
    border-radius: 14px;
    font-size: 25px;
}
.feature h3 {
    margin-top: 12px;
    font-size: 16px;
}
.feature p {
    margin-top: 7px;
    font-size: 13px;
    line-height: 1.4;
    color: #59677f;
}
/* =========================
   LOGIN SECTION
========================= */
.login-section {
    padding: 55px 55px;
}
.login-section h1 {
    text-align: center;
    font-size: 32px;
}
.login-subtitle {
    text-align: center;
    margin-top: 12px;
    color: #59677f;
    font-size: 18px;
}
/* =========================
   USER TYPES
========================= */
.user-types {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    margin-top: 40px;
    border: 1px solid #ccd5e3;
    border-radius: 10px;
    overflow: hidden;
}
.user-types button {
    padding: 14px 5px;
    background: white;
    border: none;
    border-right: 1px solid #ccd5e3;
    font-size: 15px;
    cursor: pointer;
}
.user-types button:last-child {
    border-right: none;
}
.user-types .active {
    background: #1764e8;
    color: white;
}
/* =========================
   FORM
========================= */
form {
    margin-top: 40px;
}
form label {
    display: block;
    margin-bottom: 9px;
    font-weight: bold;
}
form input[type="text"],
form input[type="password"] {
    width: 100%;
    padding: 16px;
    margin-bottom: 25px;
    border: 1px solid #ccd5e3;
    border-radius: 9px;
    font-size: 15px;
    outline: none;
}
form input[type="text"]:focus,
form input[type="password"]:focus {
    border-color: #1764e8;
}
/* =========================
   LOGIN OPTIONS
========================= */
.login-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}
.remember {
    display: flex !important;
    align-items: center;
    gap: 7px;
    font-weight: normal !important;
    margin: 0 !important;
}
.login-options a {
    text-decoration: none;
    color: #1764e8;
}
/* =========================
   LOGIN BUTTON
========================= */
.login-button {
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: 9px;
    background: #1764e8;
    color: white;
    font-size: 18px;
    cursor: pointer;
}
.login-button:hover {
    background: #0d50c5;
}
/* =========================
   REGISTER
========================= */
.register {
    text-align: center;
    margin-top: 35px;
    color: #53617a;
}
.register a {
    color: #1764e8;
    text-decoration: none;
    font-weight: bold;
}
/* =========================
   FOOTER
========================= */
footer {
    width: 96%;
    margin: 0 auto;
    background: white;
    padding: 20px;
    text-align: center;
    color: #53617a;
    border-radius: 0 0 12px 12px;
}
/* =========================
   RESPONSIVE DESIGN
========================= */
@media (max-width: 900px) {
    .main-container {
        grid-template-columns: 1fr;
    }
    .features {
        grid-template-columns: repeat(2, 1fr);
    }
    nav {
        gap: 15px;
    }
    .intro-section {
        padding: 40px;
    }
}
@media (max-width: 600px) {
    .navbar {
        flex-direction: column;
        gap: 20px;
    }
    nav {
        flex-wrap: wrap;
        justify-content: center;
    }
    .intro-section h1 {
        font-size: 35px;
    }
    .login-section {
        padding: 35px 25px;
    }
}