* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: #f5f7f9;
    color: #1c2530;
    line-height: 1.6;
}

.container {
    width: min(1100px, calc(100% - 40px));
    margin: 0 auto;
}


/* Login */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-wrapper {
    width: 100%;
    padding: 30px 20px;
}

.login-box {
    width: 100%;
    max-width: 460px;
    margin: 0 auto;
    padding: 40px;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.login-logo {
    display: block;
    margin: 0 auto 30px;
}

.login-box h1 {
    margin: 0 0 12px;
    text-align: center;
    font-size: 28px;
}

.login-intro {
    margin: 0 0 30px;
    text-align: center;
    color: #5b6570;
}

.login-box label {
    display: block;
    margin: 20px 0 7px;
    font-weight: 600;
}

.login-box input {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid #ccd2d8;
    border-radius: 5px;
    font-size: 16px;
}

.login-box input:focus {
    outline: 2px solid #244a70;
    outline-offset: 1px;
}

.login-button {
    width: 100%;
    margin-top: 25px;
    padding: 14px 20px;
    border: 0;
    border-radius: 5px;
    background: #244a70;
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}

.login-button:hover {
    background: #183652;
}

.error-message {
    margin: 20px 0;
    padding: 12px 15px;
    border-left: 4px solid #a52a2a;
    background: #fff1f1;
}


/* Header */

.portal-header {
    background: #ffffff;
    border-bottom: 1px solid #e2e6ea;
}

.header-content {
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 30px;
}

.logo {
    width: 220px;
    max-width: 55%;
    height: auto;
}

.user-area {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 14px;
}

.logout-button {
    display: inline-block;
    padding: 8px 14px;
    border: 1px solid #244a70;
    border-radius: 4px;
    color: #244a70;
    text-decoration: none;
}

.logout-button:hover {
    background: #244a70;
    color: #ffffff;
}


/* Inhalt */

.portal-content {
    padding-top: 55px;
    padding-bottom: 80px;
}

.welcome {
    margin-bottom: 45px;
}

.welcome h1 {
    margin: 0 0 15px;
    font-size: 34px;
    line-height: 1.25;
}

.welcome p {
    max-width: 780px;
    margin: 0;
    color: #505b65;
    font-size: 18px;
}


/* Kategorien */

.category {
    margin-bottom: 15px;
    background: #ffffff;
    border: 1px solid #e0e4e7;
    border-radius: 6px;
    overflow: hidden;
}

.category summary {
    padding: 18px 22px;
    cursor: pointer;
    font-size: 20px;
    font-weight: 700;
    color: #244a70;
    user-select: none;
}

.category summary:hover {
    background: #f7f9fa;
}

.video-links {
    padding: 5px 22px 22px;
}

.video-link {
    display: block;
    width: 100%;
    padding: 9px 0;
    border: 0;
    background: transparent;
    color: #244a70;
    text-align: left;
    font: inherit;
    font-size: 16px;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.video-link:hover {
    color: #111111;
}


/* Videoplayer */

.player-section {
    scroll-margin-top: 25px;
    margin-top: 45px;
    padding-top: 10px;
}

.player-section h2 {
    margin: 0 0 20px;
    font-size: 26px;
}

.video-wrapper {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    background: #000000;
    border-radius: 8px;
    overflow: hidden;
}

.video-wrapper iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}


/* Smartphone */

@media (max-width: 700px) {

    .container {
        width: min(100% - 28px, 1100px);
    }

    .header-content {
        min-height: auto;
        padding-top: 20px;
        padding-bottom: 20px;
        align-items: flex-start;
        flex-direction: column;
    }

    .logo {
        width: 190px;
        max-width: 80%;
    }

    .user-area {
        width: 100%;
        justify-content: space-between;
        gap: 10px;
        flex-wrap: wrap;
    }

    .portal-content {
        padding-top: 35px;
    }

    .welcome h1 {
        font-size: 27px;
    }

    .welcome p {
        font-size: 16px;
    }

    .category summary {
        padding: 15px 17px;
        font-size: 18px;
    }

    .video-links {
        padding-left: 17px;
        padding-right: 17px;
    }

    .login-box {
        padding: 28px 22px;
    }

}