/* ========================================
   RESET
======================================== */

.about-page {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
    padding: 32px 0;
}
.about-page h1 { font-size: 32px; margin-bottom: 24px; color: #18243b; }
.about-page > p { font-size: 18px; line-height: 1.8; }
.feedback-form { margin-top: 36px; padding: 28px; background: #f5f8fc; border: 1px solid #dce4ee; border-radius: 16px; }
.feedback-form h2 { font-size: 22px; margin-bottom: 20px; }
.feedback-form label { display: block; margin-bottom: 10px; line-height: 1.5; }
.feedback-form textarea { width: 100%; padding: 14px; font: inherit; line-height: 1.6; border: 1px solid #8a94a5; border-radius: 10px; resize: vertical; }
.feedback-form textarea:focus-visible { outline: 2px solid #168fe0; outline-offset: 2px; }
.feedback-form button { margin-top: 16px; padding: 12px 22px; border: 0; border-radius: 8px; background: #18243b; color: white; font: inherit; cursor: pointer; }
.feedback-form button:disabled { opacity: .6; cursor: wait; }
.feedback-status { margin-top: 14px; line-height: 1.6; }
@media (max-width: 650px) { .feedback-form { padding: 18px; } }

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


body {
    font-family: Arial, Helvetica, sans-serif;

    background-color: #ffffff;

    color: #111820;
}



/* ========================================
   NAVBAR
======================================== */

.navbar {
    position: fixed;

    top: 0;
    left: 0;

    width: 100%;

    height: 108px;

    background-color: #18243b;

    display: flex;

    align-items: center;

    justify-content: space-between;

    padding: 0 45px;

    border-bottom: 2px solid #8a94a5;

    z-index: 1000;
}



/* ========================================
   LOGO
======================================== */

.logo {
    display: flex;

    align-items: center;

    text-decoration: none;
}


.logo-icon {
    width: 58px;
    height: 58px;

    border: 7px solid #1595e5;

    border-right-color: transparent;

    border-radius: 50%;

    display: flex;

    align-items: center;

    justify-content: center;

    margin-right: 10px;
}


.logo-text {
    color: #f5f5f5;

    font-size: 38px;

    font-weight: 700;

    letter-spacing: -1.5px;
}


.logo-text span {
    color: #168fe0;
}



/* ========================================
   NAVBAR RIGHT
======================================== */

.nav-links {
    display: flex;

    align-items: center;

    gap: 24px;
}

.auth-actions {
    display: flex;
    align-items: center;
    gap: 24px;
}

.navbar-profile {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 12px 8px 8px;
    border: 1px solid #506078;
    border-radius: 999px;
    background: transparent;
    color: #ffffff;
    font: inherit;
    font-size: 18px;
    cursor: pointer;
}

.navbar-profile:hover {
    background: #26344f;
}

.navbar-avatar,
.account-avatar {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: #dce7f3;
    color: #17375e;
}

.navbar-avatar {
    width: 42px;
    height: 42px;
}

.navbar-avatar svg {
    width: 24px;
    height: 24px;
}


.nav-links a {
    text-decoration: none;
}


.about {
    color: white;

    font-size: 25px;

    font-weight: 500;

    margin-right: 18px;

    transition: 0.2s;
}


.about:hover {
    color: #1595e5;
}



/* ========================================
   NAVBAR BUTTONS
======================================== */

.btn {
    height: 62px;

    padding: 0 32px;

    border-radius: 13px;

    display: flex;

    align-items: center;

    justify-content: center;

    font-size: 23px;

    font-weight: 500;

    transition: 0.2s;
}


.signin {
    color: white;

    border: 2px solid #d4d9e0;

    background-color: transparent;
}


.signin:hover {
    background-color: #26344f;
}


.signup {
    color: white;

    background-color: #168fe0;

    border: 2px solid #168fe0;

    padding-left: 34px;

    padding-right: 34px;
}


.signup:hover {
    background-color: #087bc5;

    border-color: #087bc5;
}



/* ========================================
   SIDEBAR
======================================== */

.sidebar {
    position: fixed;

    top: 108px;

    left: 0;

    width: 300px;

    height: calc(100vh - 108px);

    background-color: #f5f7fa;

    padding: 25px 20px;

    display: flex;

    flex-direction: column;

    gap: 12px;

    border-right: 1px solid #e1e5eb;

    z-index: 900;
}

.sidebar-bottom { margin-top: auto; }

.sidebar-toggle {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    border: 1px solid #d8e2ed;
    border-radius: 10px;
    background: #ffffff;
    color: #17375e;
    cursor: pointer;
}
.sidebar-toggle svg { width: 22px; height: 22px; }
.sidebar-toggle:hover { background: #e9eef5; }
.sidebar-toggle:focus-visible { outline: 2px solid #168fe0; outline-offset: 3px; }
.sidebar-close { align-self: flex-end; }
.sidebar-open { position: fixed; bottom: 20px; left: 16px; z-index: 900; }
.sidebar[hidden], .sidebar-open[hidden] { display: none; }
body.sidebar-collapsed #content { margin-left: 0; }
body.sidebar-collapsed .knowledge-page.has-results .knowledge-composer { left: 0; }



/* ========================================
   SIDEBAR GROUPS
======================================== */

.sidebar-main,
.sidebar-bottom {
    display: flex;

    flex-direction: column;

    gap: 4px;
}



/* ========================================
   SIDEBAR ITEM
======================================== */

.sidebar-item {
    position: relative;

    width: 100%;

    height: 65px;

    border: none;

    background-color: transparent;

    border-radius: 14px;

    display: flex;

    align-items: center;

    gap: 18px;

    padding: 0 20px;

    color: #111820;

    font-size: 20px;

    font-weight: 500;

    cursor: pointer;

    text-align: left;

    transition: all 0.2s ease;
}



/* ========================================
   SIDEBAR ICON
======================================== */

.sidebar-item svg {
    width: 28px;

    height: 28px;

    stroke-width: 1.8;

    flex-shrink: 0;
}



/* ========================================
   HOVER
======================================== */

.sidebar-item:hover {
    background-color: #e9eef5;
}



/* ========================================
   ACTIVE
======================================== */

.sidebar-item.active {
    background-color: #dce7f3;

    color: #17375e;
}


.sidebar-item.active::before {
    content: "";

    position: absolute;

    left: -20px;

    top: 0;

    width: 6px;

    height: 65px;

    background-color: #168fe0;

    border-radius: 0 5px 5px 0;
}



/* ========================================
   MAIN CONTENT
======================================== */

#content {

    margin-left: 300px;

    padding: 45px;

    padding-top: 108px;

    min-height: 100vh;

    background-color: #ffffff;

    display: flex;

    align-items: center;

    justify-content: center;
}




/* ========================================
   PAGE PREVIEW
======================================== */

.page-preview {

    width: 100%;

    max-width: 850px;

    text-align: center;

    padding: 40px;
}


.page-preview-icon {

    width: 80px;

    height: 80px;

    margin: 0 auto 25px;

    border-radius: 20px;

    background-color: #e8f2fb;

    color: #168fe0;

    display: flex;

    align-items: center;

    justify-content: center;
}


.page-preview-icon svg {

    width: 42px;

    height: 42px;

    stroke-width: 1.7;
}


.page-preview h1 {

    font-size: 38px;

    color: #17243b;

    margin-bottom: 18px;
}


.page-preview .coming-soon {
    margin-top: 12px;
    font-size: 13px;
    color: #687386;
}

.page-preview p {

    max-width: 650px;

    margin: 0 auto;

    color: #687386;

    font-size: 18px;

    line-height: 1.6;
}



/* ========================================
   CTA
======================================== */

.cta {

    margin-top: 35px;

    display: flex;

    justify-content: center;

    align-items: center;

    gap: 15px;
}


.cta-btn {

    height: 52px;

    padding: 0 30px;

    border-radius: 10px;

    font-size: 17px;

    font-weight: 600;

    cursor: pointer;

    transition: 0.2s;
}



/* Sign In CTA */

.cta-signin {

    background-color: transparent;

    color: #17375e;

    border: 2px solid #17375e;
}


.cta-signin:hover {

    background-color: #17375e;

    color: white;
}



/* Sign Up CTA */

.cta-signup {

    background-color: #168fe0;

    color: white;

    border: 2px solid #168fe0;
}


.cta-signup:hover {

    background-color: #087bc5;

    border-color: #087bc5;
}



/* ========================================
   CTA MESSAGE
======================================== */

.cta-message {

    margin-top: 18px;

    font-size: 14px !important;

    color: #8a94a5 !important;
}

/* ========================================
   ACCOUNT PAGE
======================================== */

.account-page {
    width: 100%;
    max-width: 780px;
    padding: 42px 0;
    text-align: center;
}

.account-avatar {
    width: 132px;
    height: 132px;
    margin: 0 auto 18px;
    background: #e8f2fb;
    color: #168fe0;
}

.account-avatar svg {
    width: 76px;
    height: 76px;
    stroke-width: 1.5;
}

.account-page h1 {
    color: #17243b;
    font-size: 34px;
}

.account-email {
    margin-top: 8px;
    color: #687386;
    font-size: 17px;
}

.account-settings {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    margin-top: 34px;
    text-align: left;
}

.account-form {
    padding: 25px;
    border: 1px solid #d8dee8;
    border-radius: 16px;
    background: #ffffff;
}

.account-form h2 {
    margin-bottom: 20px;
    color: #18243b;
    font-size: 21px;
}

.account-form label {
    display: block;
    margin: 15px 0 8px;
    color: #18243b;
    font-size: 15px;
    font-weight: 600;
}

.account-form input {
    width: 100%;
    height: 48px;
    padding: 0 14px;
    border: 1px solid #cfd6df;
    border-radius: 9px;
    background: #f8f9fb;
    color: #111820;
    font-size: 16px;
}

.account-form input:focus {
    outline: none;
    border-color: #4285d4;
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(66, 133, 212, 0.12);
}

.account-save,
.signout-button {
    border: none;
    border-radius: 9px;
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
}

.account-save {
    width: 100%;
    height: 48px;
    margin-top: 20px;
    background: #4285d4;
}

.account-save:hover {
    background: #3475c3;
}

.account-status {
    min-height: 1.4em;
    margin-top: 12px;
    color: #344054;
    font-size: 14px;
    line-height: 1.4;
}

.account-status.is-error {
    color: #b42318;
}

.account-status.is-success {
    color: #027a48;
}

.signout-button {
    min-width: 160px;
    height: 50px;
    margin-top: 28px;
    background: #b42318;
}

.signout-button:hover {
    background: #8f1c13;
}

.account-save:disabled,
.signout-button:disabled {
    cursor: wait;
    opacity: 0.7;
}



/* ========================================
   RESPONSIVE
======================================== */

@media (max-width: 900px) {

    .navbar {
        padding: 0 25px;
    }


    .about {
        display: none;
    }


    .sidebar {
        width: 240px;
    }


    #content {
        margin-left: 240px;
    }

}



@media (max-width: 650px) {

    .navbar {
        height: 80px;
    }


    .logo-text {
        font-size: 27px;
    }


    .logo-icon {
        width: 45px;

        height: 45px;

        border-width: 5px;
    }


    .signin {
        display: none;
    }


    .signup {
        height: 48px;

        font-size: 17px;

        padding: 0 20px;
    }

    .navbar-profile {
        padding: 6px;
        border: none;
    }

    .navbar-profile #navbar-fullname {
        display: none;
    }


    .sidebar {

        top: 80px;

        width: 75px;

        height: calc(100vh - 80px);

        padding: 20px 10px;
    }


    .sidebar-item {

        justify-content: center;

        padding: 0;

        height: 55px;
    }


    .sidebar-item span {

        display: none;
    }


    .sidebar-item.active::before {

        left: -10px;

        height: 55px;
    }


    #content {

        margin-left: 75px;

        padding: 30px;

        padding-top: 100px;
    }


    .page-preview {

        padding: 20px;
    }


    .page-preview h1 {

        font-size: 28px;
    }


    .page-preview p {

        font-size: 16px;
    }


    .cta {

        flex-direction: column;
    }


    .cta-btn {

        width: 180px;
    }

    .account-page {
        padding: 20px 0;
    }

    .account-avatar {
        width: 104px;
        height: 104px;
    }

    .account-avatar svg {
        width: 60px;
        height: 60px;
    }

    .account-page h1 {
        font-size: 28px;
    }

    .account-settings {
        grid-template-columns: 1fr;
    }

}

/* ============================= */
/* SIGN IN PAGE */
/* ============================= */

.signin-navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}


/* Main sign in area */

.signin-page {
    min-height: 100vh;
    padding-top: 108px;

    display: flex;
    justify-content: center;
    align-items: center;

    background: #f7f9fc;
}


/* Sign in card */

.signin-container {
    width: 100%;
    max-width: 550px;

    background: white;

    padding: 45px 44px;

    border-radius: 18px;

    border: 1px solid #d8dee8;

    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);

    text-align: center;
}


/* Logo inside card */

.signin-logo {
    display: flex;
    justify-content: center;
    align-items: center;

    gap: 10px;

    margin-bottom: 30px;
}


/* Heading */

.signin-container h1 {
    margin-bottom: 32px;

    font-size: 30px;
    font-weight: 500;

    color: #18243b;
}


/* Form */

#signin-form {
    text-align: left;
}


.form-group {
    margin-bottom: 22px;
}


.form-group label {
    display: block;

    margin-bottom: 9px;

    font-size: 16px;
    font-weight: 500;

    color: #18243b;
}


.form-group input {
    width: 100%;
    height: 54px;

    padding: 0 16px;

    border: 1px solid #cfd6df;
    border-radius: 10px;

    background: #f8f9fb;

    font-size: 16px;

    box-sizing: border-box;

    outline: none;
}


.form-group input:focus {
    border-color: #4285d4;

    background: white;

    box-shadow: 0 0 0 3px rgba(66, 133, 212, 0.12);
}


/* Sign In button */

.signin-submit {
    width: 100%;
    height: 56px;

    margin-top: 5px;

    border: none;
    border-radius: 9px;

    background: #4285d4;

    color: white;

    font-size: 18px;
    font-weight: 500;

    cursor: pointer;

    transition: background 0.2s ease;
}


.signin-submit:hover {
    background: #3475c3;
}

.signin-submit:disabled,
.signup-submit:disabled {
    cursor: wait;
    opacity: 0.7;
}

.form-status {
    min-height: 1.5em;
    margin-top: 16px;
    color: #344054;
    font-size: 15px;
    line-height: 1.4;
    text-align: center;
}

.form-status.is-error {
    color: #b42318;
}

.form-status.is-success {
    color: #027a48;
}


/* Forgot password */

.forgot-password {
    display: block;

    margin-top: 16px;

    color: #18243b;

    font-size: 16px;

    text-decoration: none;
}


.forgot-password:hover {
    color: #4285d4;
}


/* Sign up text */

.signup-text {
    margin-top: 30px;

    font-size: 16px;

    color: #18243b;
}


.signup-text a {
    color: #4285d4;

    text-decoration: none;

    font-weight: 500;
}


.signup-text a:hover {
    text-decoration: underline;
}

.signin-logo .logo-text {
    color: #1683E8;
}

.signin-logo .logo-text span {
    color: #18243B;
}

/* Mobile */

@media (max-width: 600px) {

    .signin-container {
        margin: 20px;

        padding: 35px 25px;
    }

    .signin-container h1 {
        font-size: 25px;
    }

}

/* ============================= */
/* SIGN UP PAGE */
/* ============================= */

.signup-navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}


/* Main area */

.signup-page {
    min-height: 100vh;
    width: 100%;
    padding-top: 108px;
    padding-bottom: 40px;
    display: flex;
    justify-content: center;
    align-items: center;

    background: #f7f9fc;
}


/* Sign Up card */

.signup-container {
    width: 100%;
    max-width: 550px;

    background: white;

    padding: 42px 44px;

    border-radius: 18px;

    border: 1px solid #d8dee8;

    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);

    text-align: center;
}


/* Logo */

.signup-logo {
    display: flex;

    justify-content: center;
    align-items: center;

    gap: 10px;

    margin-bottom: 25px;
}


/* Logo text */

.signup-logo .logo-text {
    color: #1683E8;
}

.signup-logo .logo-text span {
    color: #18243B;
}


/* Heading */

.signup-container h1 {
    margin-bottom: 10px;

    font-size: 28px;
    font-weight: 500;

    color: #18243b;
}


/* Subtitle */

.signup-subtitle {
    margin-bottom: 30px;

    font-size: 15px;

    color: #667085;
}


/* Form */

#signup-form {
    text-align: left;
}


/* Form group */

.signup-container .form-group {
    margin-bottom: 18px;
}


/* Labels */

.signup-container .form-group label {
    display: block;

    margin-bottom: 8px;

    font-size: 16px;
    font-weight: 500;

    color: #18243b;
}


/* Inputs */

.signup-container .form-group input {
    width: 100%;
    height: 52px;

    padding: 0 16px;

    box-sizing: border-box;

    border: 1px solid #cfd6df;
    border-radius: 10px;

    background: #f8f9fb;

    font-size: 16px;

    outline: none;
}


/* Input focus */

.signup-container .form-group input:focus {
    border-color: #4285d4;

    background: white;

    box-shadow: 0 0 0 3px rgba(66, 133, 212, 0.12);
}


/* Sign Up button */

.signup-submit {
    width: 100%;
    height: 54px;

    margin-top: 8px;

    border: none;
    border-radius: 9px;

    background: #4285d4;

    color: white;

    font-size: 18px;
    font-weight: 500;

    cursor: pointer;

    transition: background 0.2s ease;
}


.signup-submit:hover {
    background: #3475c3;
}


/* Sign In text */

.signin-text {
    margin-top: 25px;

    font-size: 16px;

    color: #18243b;
}


.signin-text a {
    color: #4285d4;

    text-decoration: none;

    font-weight: 500;
}


.signin-text a:hover {
    text-decoration: underline;
}


/* Mobile */

@media (max-width: 600px) {

    .signup-container {
        margin: 20px;

        padding: 35px 25px;
    }

    .signup-container h1 {
        font-size: 24px;
    }

}

/* ========================================
   COURSE KNOWLEDGE
======================================== */

.knowledge-page {
    width: 100%;
    max-width: 850px;
    min-height: calc(100vh - 153px);
    align-self: flex-start;
    padding-top: 24px;
    display: flex;
    flex-direction: column;
}

.knowledge-page:not(.has-results) {
    justify-content: center;
    gap: 32px;
}

.knowledge-heading {
    text-align: center;
}

.knowledge-heading[hidden] { display: none; }

.knowledge-heading-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 14px;
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #e8f2fb;
    color: #168fe0;
}

.knowledge-heading-icon svg {
    width: 34px;
    height: 34px;
    stroke-width: 1.7;
}

.knowledge-heading h1 {
    color: #17243b;
    font-size: 34px;
    margin-bottom: 10px;
}

.knowledge-heading p {
    max-width: 650px;
    margin: 0 auto;
    color: #687386;
    font-size: 17px;
    line-height: 1.55;
}

.knowledge-composer {
    width: 100%;
    margin-top: auto;
    margin-bottom: max(12vh, 48px);
}

.knowledge-page:not(.has-results) .knowledge-composer { margin: 0; }

.knowledge-composer-inner {
    width: 100%;
    max-width: 850px;
    margin: 0 auto;
}

.knowledge-page.has-results {
    padding-bottom: 120px;
    padding-top: 0px;
}

.knowledge-page.has-results .knowledge-composer {
    position: fixed;
    left: 300px;
    right: 0;
    bottom: 0;
    z-index: 100;
    width: auto;
    margin: 0;
    padding: 14px 32px calc(16px + env(safe-area-inset-bottom));
    border-top: 1px solid #e7edf3;
    background: #ffffff;
    box-shadow: 0 -8px 24px rgba(23, 36, 59, 0.05);
}

@media (max-width: 900px) {
    .knowledge-page.has-results .knowledge-composer { left: 240px; }
}

.knowledge-dropzone {
    position: relative;
    width: 100%;
    min-height: 76px;
    padding: 12px 18px;
    border: 1px solid #cbd8e7;
    border-radius: 18px;
    background: #ffffff;
    cursor: pointer;
    box-shadow: 0 2px 12px rgba(23, 36, 59, 0.06);
    transition: border-color 0.2s ease, background 0.2s ease;
    overflow: hidden;
}

.knowledge-dropzone.has-files {
    height: 160px;
    border-color: #c5d2e0;
}

.knowledge-dropzone.has-files .knowledge-empty-state {
    display: none !important;
}

.knowledge-dropzone.has-files .knowledge-file-list {
    display: flex !important;
    align-items: flex-start;
}

.knowledge-dropzone:hover,
.knowledge-dropzone:focus-visible,
.knowledge-dropzone.is-dragging {
    outline: none;
    border-color: #168fe0;
    background: #eff7ff;
}

.knowledge-empty-state {
    min-height: 50px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #344054;
    text-align: left;
    font-size: 15px;
}

.knowledge-upload-icon {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    color: #168fe0;
}

.knowledge-upload-icon svg {
    width: 22px;
    height: 22px;
}

.knowledge-file-list {
    height: 100%;
    display: flex;
    align-items: center;
    gap: 14px;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 1px 2px 4px;
    scrollbar-color: #aab9ca transparent;
}

.knowledge-file-list[hidden] { display: none; }

.knowledge-file-card {
    position: relative;
    width: 124px;
    height: 132px;
    padding: 12px 10px;
    border: 1px solid #cbd8e7;
    border-radius: 12px;
    background: #ffffff;
    display: flex;
    flex: 0 0 auto;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.knowledge-remove-file {
    position: absolute;
    top: 7px;
    right: 7px;
    width: 22px;
    height: 22px;
    padding: 0;
    border: 1px solid #c3d0dd;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    color: #667085;
    cursor: pointer;
}

.knowledge-remove-file:hover,
.knowledge-remove-file:focus-visible {
    outline: none;
    border-color: #b42318;
    background: #fff1f0;
    color: #b42318;
}

.knowledge-remove-file svg {
    width: 13px;
    height: 13px;
    stroke-width: 2.5;
}

.knowledge-add-file {
    width: 124px;
    height: 132px;
    border: 1px solid #b7c8da;
    border-radius: 12px;
    background: #f8fbff;
    color: #168fe0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.knowledge-add-file:hover,
.knowledge-add-file:focus-visible {
    outline: none;
    border-color: #168fe0;
    background: #eaf4ff;
}

.knowledge-add-file svg {
    width: 42px;
    height: 42px;
    padding: 7px;
    border: 2px solid currentColor;
    border-radius: 50%;
    stroke-width: 2;
}

.knowledge-file-name {
    width: 100%;
    overflow: hidden;
    color: #27364a;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.2;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.knowledge-file-extension {
    margin-top: 5px;
    color: #667085;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.06em;
}

.knowledge-file-icon {
    width: 46px;
    height: 46px;
    margin-top: auto;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #eaf4ff;
    color: #168fe0;
}

.knowledge-file-icon svg {
    width: 27px;
    height: 27px;
    stroke-width: 1.8;
}

.knowledge-analysis-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-top: 10px;
    min-height: 48px;
}

.knowledge-analyze-button {
    min-height: 48px;
    padding: 0 20px;
    border: none;
    border-radius: 10px;
    display: inline-flex;
    align-items: center;
    gap: 9px;
    background: #168fe0;
    color: #ffffff;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
}

.knowledge-analyze-button:hover:not(:disabled) { background: #087bc5; }
.knowledge-analyze-button:disabled { cursor: not-allowed; opacity: 0.55; }
.knowledge-analyze-button svg { width: 18px; height: 18px; }
.knowledge-analyze-button.has-error { box-shadow: 0 0 0 2px #b42318; }
.knowledge-analyze-button.is-analyzing svg { display: none; }
.knowledge-analyze-button.is-analyzing::before {
    content: "";
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.45);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: knowledge-spin 0.8s linear infinite;
}

@keyframes knowledge-spin { to { transform: rotate(360deg); } }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.knowledge-analysis-results { display: grid; gap: 0; width: 100%; scroll-margin-top: 110px; }
.knowledge-analysis-results[hidden] { display: none; }

.knowledge-results-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; margin-top: 10px;}

.knowledge-history-toggle {
    padding: 10px 15px;
    border: 1px solid #cbd8e7;
    border-radius: 999px;
    background: #f4f8fc;
    color: #17375e;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

.knowledge-history-toggle:hover,
.knowledge-history-toggle:focus-visible { border-color: #168fe0; background: #eaf4ff; }
.knowledge-clear-button {
    padding: 10px 15px;
    border: 1px solid #e7b4b4;
    border-radius: 999px;
    background: #fff7f7;
    color: #b42318;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}
.knowledge-clear-button:hover,
.knowledge-clear-button:focus-visible { border-color: #b42318; background: #fff0f0; }
.knowledge-previous-results { display: grid; margin-bottom: 12px; border-top: 1px solid #e7edf3; }
.knowledge-previous-results[hidden] { display: none; }

.knowledge-analysis-card {
    padding: 24px 0;
    border-bottom: 1px solid #e7edf3;
}

.knowledge-card-header { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 12px; }
.knowledge-analysis-card h2 { margin: 0; color: #17243b; font-size: 20px; font-weight: 700; }
.knowledge-save-button {
    flex: 0 0 auto;
    padding: 9px 14px;
    border: 1px solid #168fe0;
    border-radius: 9px;
    background: #eaf4ff;
    color: #0969a9;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
}
.knowledge-save-button:hover:not(:disabled) { background: #d9edff; }
.knowledge-save-button:disabled { cursor: default; opacity: 0.7; }
.knowledge-course-facts { display: grid; gap: 3px; margin-bottom: 16px; color: #667085; font-size: 13px; }
.knowledge-analysis-points { display: grid; gap: 12px; padding-left: 24px; }
.knowledge-analysis-points li { color: #27364a; font-size: 16px; line-height: 1.65; }
.knowledge-analysis-points li::marker { color: #168fe0; }
.knowledge-analysis-card h3 { margin: 22px 0 10px; color: #344054; font-size: 15px; }
.knowledge-analysis-details {
    display: grid;
    gap: 9px;
    padding: 14px 18px 14px 38px;
    border-radius: 12px;
    background: #f4f8fc;
}
.knowledge-analysis-details li { color: #344054; font-size: 15px; line-height: 1.6; }

#content.has-dashboard { align-items: flex-start; }
.dashboard-page { width: 100%; max-width: 1000px; padding: 25px 0 80px; }
.dashboard-saved h1 { margin-bottom: 18px; color: #17243b; font-size: 22px; }
.saved-course-list { display: grid; gap: 12px; }
.saved-course-empty { padding: 25px; border: 1px dashed #cbd8e7; border-radius: 14px; color: #687386; }
.saved-course-item { border: 1px solid #d9e3ef; border-radius: 14px; background: #fff; overflow: hidden; }
.saved-course-header { display: flex; align-items: stretch; }
.saved-course-expand {
    width: 100%; min-width: 0; padding: 18px 20px; border: 0; background: transparent;
    text-align: left; display: grid; grid-template-columns: 1fr auto; gap: 8px 18px;
    cursor: pointer;
}
.saved-course-expand:hover, .saved-course-expand:focus-visible { background: #f7fbff; }
.saved-course-name { color: #17243b; font-size: 18px; font-weight: 700; overflow-wrap: anywhere; }
.saved-course-meta { grid-column: 1; display: flex; flex-wrap: wrap; gap: 5px 20px; color: #667085; font-size: 13px; line-height: 1.5; }
.saved-course-expand svg { grid-column: 2; grid-row: 1 / 3; width: 18px; height: 18px; align-self: center; color: #667085; transition: transform 0.2s; }
.saved-course-expand[aria-expanded="true"] svg { transform: rotate(180deg); }
.saved-course-delete {
    flex: 0 0 50px; border: 0; border-left: 1px solid #e7edf3;
    background: #fff; color: #667085; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
}
.saved-course-delete:hover:not(:disabled), .saved-course-delete:focus-visible { background: #fff1f0; color: #b42318; }
.saved-course-delete svg { width: 19px; height: 19px; }
.saved-course-details { padding: 0 20px 22px; border-top: 1px solid #edf1f6; }
.saved-course-details[hidden] { display: none; }
.saved-course-details .knowledge-analysis-points { padding-top: 20px; }
.saved-course-details h3 { margin: 22px 0 10px; color: #344054; font-size: 15px; }
.saved-course-error { padding: 0 20px 15px; color: #b42318; font-size: 13px; }

@media (max-width: 650px) {
    .dashboard-page { padding-top: 0; }
    .saved-course-expand { padding: 15px; }
    .saved-course-delete { flex-basis: 42px; }
    .knowledge-card-header { flex-wrap: wrap; gap: 10px; }
    .knowledge-page {
        min-height: calc(100vh - 130px);
        padding-top: 12px;
    }

    .knowledge-page:not(.has-results) { gap: 24px; }

    .knowledge-heading-icon {
        width: 56px;
        height: 56px;
        margin-bottom: 12px;
    }

    .knowledge-heading h1 { font-size: 28px; }
    .knowledge-heading p { font-size: 15px; }

    .knowledge-page.has-results .knowledge-composer {
        left: 75px;
        padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
    }

    .knowledge-dropzone {
        min-height: 68px;
        padding: 10px 12px;
    }

    .knowledge-dropzone.has-files {
        height: 150px;
    }

    .knowledge-empty-state {
        gap: 8px;
        font-size: 13px;
    }

    .knowledge-file-card {
        width: 112px;
        height: 124px;
    }

    .knowledge-add-file {
        width: 112px;
        height: 124px;
    }

    .knowledge-file-list {
        padding-right: 2px;
    }

    .knowledge-analyze-button {
        min-height: 44px;
        padding: 0 14px;
        font-size: 13px;
    }
}