/* ================================================================
   HALAMAN LOGIN
   Seluruh tampilan login diletakkan di file ini agar index.php hanya
   berisi logika autentikasi dan struktur HTML.
   ================================================================ */

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: grid;
    place-items: center;
    background: linear-gradient(145deg, #0b6b50, #0e9970);
    color: #17352c;
    font: 15px Arial, sans-serif;
}

.login {
    width: min(410px, calc(100% - 36px));
    overflow: hidden;
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 22px 60px #003c2d80;
}

.login-head {
    padding: 30px 35px 25px;
    background: #e5f7ef;
    border-bottom: 5px solid #0d865f;
    text-align: center;
}

.seal {
    width: 64px;
    height: 64px;
    margin: 0 auto 14px;
    display: grid;
    place-items: center;
    overflow: hidden;
    padding: 5px;
    background: #fff;
    border: 2px solid #0d865f;
    border-radius: 50%;
    color: #0d865f;
    font-size: 15px;
    font-weight: bold;
}

.seal img {
    display: block;
    width: 100%;
    height: 100%;
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.login-head h1 {
    margin: 0;
    color: #14523e;
    font-size: 20px;
    line-height: 1.35;
}

.login-head h1 span {
    display: block;
    margin-top: 2px;
    color: #0d865f;
    font-size: 17px;
}

.login-head p {
    margin: 8px 0 0;
    color: #53746a;
    font-size: 13px;
}

.login-head .institution-name {
    margin-top: 10px;
    color: #274f42;
    font-size: 14px;
    font-weight: bold;
}

.login form {
    padding: 28px 35px 32px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 7px;
    margin-bottom: 17px;
    font-weight: bold;
}

.field input {
    padding: 12px;
    border: 1px solid #b7ccc4;
    border-radius: 6px;
    font: inherit;
}

.field input:focus {
    outline: 2px solid #69bda1;
    border-color: #2f9876;
}

.btn {
    width: 100%;
    padding: 12px;
    border: 0;
    border-radius: 6px;
    background: #0d865f;
    color: #fff;
    cursor: pointer;
    font-size: 15px;
    font-weight: bold;
}

.btn:hover {
    background: #086e4d;
}

.error {
    margin-bottom: 16px;
    padding: 10px 12px;
    background: #ffebe9;
    border: 1px solid #f5b2aa;
    border-radius: 6px;
    color: #9f2519;
}

.login-theme-toggle {
    position: fixed;
    top: 18px;
    right: 20px;
    padding: 8px 12px;
    border: 1px solid #ffffff80;
    border-radius: 18px;
    background: #163e31;
    color: #fff;
    cursor: pointer;
    font: 13px Arial, sans-serif;
}

.login-theme-toggle:hover {
    background: #205442;
}

/* Tampilan gelap halaman login. */
html.dark-mode {
    color-scheme: dark;
}

html.dark-mode body {
    background: linear-gradient(145deg, #091410, #10251d);
    color: #e5eee9;
}

html.dark-mode .login {
    background: #18231f;
    box-shadow: 0 22px 60px #000b;
}

html.dark-mode .login-head {
    background: #1d3029;
    border-color: #208765;
}

html.dark-mode .login-head h1 {
    color: #dff8ed;
}

html.dark-mode .login-head h1 span {
    color: #8ee0be;
}

html.dark-mode .login-head p {
    color: #a9b9b2;
}

html.dark-mode .login-head .institution-name {
    color: #dff8ed;
}

html.dark-mode .field input {
    background: #101816;
    border-color: #51665d;
    color: #f1f6f3;
}