:root {
    /* Backgrounds */
    --bg-cream: #FAF7F2;          /* Main page background */
    --bg-card: #F8F3EA;           /* Container backgrounds */
    --bg-head-foot: #F3EDE2;      /* Header & Footer backgrounds */
    
    /* Typography */
    --main-font: 'Atkinson Hyperlegible', Arial, sans-serif;
    --text-main: #371961;         /* Body text & links */
    --text-header: #5522A6;       /* Headers & hovered links */
    
    /* Brand Accents */
    --iris-purple: #E6DCF5; /* Button fill & dividers */
    --dark-iris-purple: #c8aaf5;
    
    /* Font Sizes */
    --font-size-xl: clamp(1.8rem, 5vw, 2.5rem);   /* For main headers */
    --font-size-lg: clamp(1.4rem, 4vw, 2rem);     /* For page/form titles */
    --font-size-md: clamp(1.1rem, 3vw, 1.5rem);   /* For main text */
    --font-size-sm: clamp(1rem, 2.5vw, 1.2rem);   /* For small text/input boxes */
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scrollbar-width: thin;
    scrollbar-color: var(--dark-iris-purple) transparent;
    max-height: 100dvh;
    max-width: 100dvw;
}

body {
    margin: 0;
    padding: 0;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    font-family: var(--main-font);
    background-color: var(--bg-cream);
    overflow-x: hidden;
}

body, p, h1, h2, h3, nav a {
    font-family: var(--main-font);
    color: var(--text-main);
}

a {
    color: var(--text-main);
    font-size: var(--font-size-md);
    transition: color 0.2s ease; 
    text-underline-offset: 6px; 
    text-decoration: none;
}

a:hover {
    color: var(--text-header);
    text-decoration: underline;
    text-decoration-color: var(--dark-iris-purple);
}

h1, h2, h3 {
    color: var(--text-header);
    margin: 0;
}

h1 {
    font-size: var(--font-size-xl);
}

h2 {
    font-size: var(--font-size-lg);
}

h3 {
    font-size: var(--font-size-md);
}

p {
    font-size: var(--font-size-md);
    line-height: 1.6; 
}

hr {
    border: none;
    height: 2px;
    background-color: var(--iris-purple);
    width: 100%;
    margin: 40px 0;
    align-self: stretch;
}

img {
    max-width: 100%;
    height: auto;
    display: block; 
}

::-webkit-scrollbar {
    width: 8px; 
    height: 8px; 
}

::-webkit-scrollbar-thumb {
    background-color: var(--dark-iris-purple);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--text-header);
}

::-webkit-scrollbar-track {
    background: transparent; 
}

.alert {
    font-size: var(--font-size-md) !important; 
    padding: 1rem 1.25rem !important; 
}

.btn, .btn a {
    font-family: var(--main-font);
    background-color: var(--iris-purple);
    color: var(--text-header);
    border: 5px solid var(--text-header); 
    padding: 14px 32px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    display: inline-block;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.btn:hover, .btn:hover a {
    background-color: var(--text-header); 
    color: var(--iris-purple); 
    border: 5px solid var(--iris-purple);
}

.input-with-vtt {
    position: relative;
    width: 100%;
}

.vtt-icon-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    
    font-size: var(--font-size-md); 
    
    background-color: var(--iris-purple); 
    border: 2px solid var(--text-header); 
    border-radius: 6px;
    padding: 3px 6px;
    
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 2;
}

.vtt-icon-btn:hover {
    background-color: var(--text-header); 
    color: var(--iris-purple); 
    transform: translateY(-50%) scale(1.08);
}

.btn-tts {
    font-size: var(--font-size-md); 
    color: var(--text-header);
    background-color: var(--iris-purple); 
    border: 4px solid var(--text-header); 
    border-radius: 6px;
    padding: 3px 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 2;
}

.btn-tts:hover {
    background-color: var(--text-header); 
    color: var(--iris-purple); 
    transform: translateY(-5%) scale(1.08);
}

body.active p,
body.active h1,
body.active h2,
body.active h3,
body.active li,
body.active button,
body.active a, 
body.active label {
    cursor: url(../images/speaker.png) 0 0, pointer;
}

.short-text {
    display: none;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-head-foot);
    padding: 20px 40px;
    border-bottom: 2px solid var(--iris-purple);
}

.header-left {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    gap: clamp(0.5rem, 3vw, 1rem);
    padding-right: clamp(0.5rem, 3vw, .75rem);
}

.header-tagline {
    font-size: var(--font-size-xl);
    line-height: 1.2;
    white-space: normal;
}

.header-left h1 {
    font-weight: 700;
    margin: 0;
}

.header-left img {
    height: 50px;
    width: 50px;
    display: block;
    filter: drop-shadow(0px 2px 4px rgba(55, 25, 97, 0.15));
}

.iris-logo {
    transition: opacity 0.2s ease;
    border-radius: 50%;
}

.iris-logo:hover {
    opacity: 0.7;
}

.header-name {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 16px;
}

.account-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-head-foot);
    padding: 20px 40px;
    border-bottom: 2px solid var(--iris-purple);
}

.account-header-left {
    display: flex;
    align-items: center;
    gap: 30px;
    flex-shrink: 0;
}

.account-header-left h1 {
    font-weight: 700;
    margin: 0;
}

.account-header-left img {
    height: 50px;
    width: 50px;
    display: block;
    filter: drop-shadow(0px 2px 4px rgba(55, 25, 97, 0.15));
}

.account-header-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-direction: column;
    gap: 15px;
    position: relative;
}

.profile-trigger {
    display: flex;
    align-items: center;
    gap: 30px;
    border: none;
    background: none;
    cursor: pointer;
    text-decoration: none;
    text-underline-offset: 5px; 
    transition: color 0.2s ease;
}

.profile-trigger:hover {
    text-decoration: underline;
    text-decoration-color: var(--dark-iris-purple); 
}

.profile-trigger:hover p {
    color: var(--text-header);
}

.profile-trigger img {
    height: 50px;
    width: 50px;
    display: block;
    filter: drop-shadow(0px 2px 4px rgba(55, 25, 97, 0.15));
    border-radius: 50%;
}

.profile-trigger p {
    margin: 0;
}

.dropdown-menu {
    position: absolute;
    top: 130%;
    right: .5;
    z-index: 100;
    display: none; 
}

.dropdown-hr {
    padding: 0;
    margin: 20px 0;
}

.dropdown-menu.show {
    display: block; 
    background-color: var(--bg-head-foot);
    border-radius: 12px;
    filter: drop-shadow(0px 2px 4px rgba(55, 25, 97, 0.15));
    padding: 15px;
}

ul {
    list-style-type: none; 
    padding: 0;  
    margin: 0; 
}

li {
    padding: 8px 0;
    font-size: var(--font-size-md);
    font-family: var(--main-font);
}

main {
    display: flex;
    flex: 1;
    height: 0;
    flex-shrink: 0;
}

footer {
    display: flex;
    align-items: center; 
    justify-content: center;
    padding: 20px 40px; 

    background-color: var(--bg-head-foot);
    border-top: 2px solid var(--iris-purple);
}

.footer-text {
    display: flex;
    flex-direction: row;
    align-items: center; 
    justify-content: space-evenly;
    gap: 80px;
}

.footer-nav {
    display: flex;
    align-items: center;
    justify-content: space-evenly;
    gap: 30px;
}

#back-to-top {
    display: none;
}

.form {
    font-size: var(--font-size-md);
    line-height: 1.6; 
    color: var(--text-main);
}

.form-group {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 8px; 
    margin-bottom: 15px; 
}

.form-group input, .form-group textarea {
    padding: 16px 18px;
    border: 2px solid var(--iris-purple);
    border-radius: 8px;
    font-family: var(--main-font);
    font-size: var(--font-size-sm);
    color: var(--text-main);
    background-color: white;
    width: 100%;
    box-sizing: border-box;
}

.form-group input:focus, .form-group textarea:focus {
    outline: 2px solid var(--text-header);
}

.form button[type="submit"] {
    padding: 10px 18px;
    margin: 15px 0 5px 0;
    border: 5px solid var(--text-header);
    border-radius: 8px;
    background-color: var(--iris-purple);
    color: var(--text-header);
    font-family: var(--main-font);
    font-size: var(--font-size-sm);
    font-weight: 700;
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
}

.form button[type="submit"]:hover {
    background-color: var(--text-header);
    color: var(--iris-purple);
    border: 5px solid var(--iris-purple);
}

.select {
    padding: 12px 14px;
    border: 2px solid var(--iris-purple);
    border-radius: 8px;
    font-family: var(--main-font);
    font-size: var(--font-size-sm);
    color: var(--text-main);
    background-color: white;
    width: 100%;
    box-sizing: border-box;
}

.select:focus {
    outline: 2px solid var(--text-header);
}

.auth-container {
    background-color: var(--bg-card);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(85, 34, 166, 0.18);
}

.auth-links {
    margin-top: 15px;
}

.back-to-login a {
    background: none;
    border: none;
    padding: 0;
    color: var(--text-main);
    font: inherit;
    cursor: pointer;
    text-decoration: underline;
    text-decoration-color: var(--dark-iris-purple); 
    text-underline-offset: 5px; 
}

.back-to-login a:hover {
    background: none;
    border: none;
    padding: 0;
    color: var(--text-header);
    text-decoration: none;
}

#toggle-login-pass, 
#toggle-signup-pass, 
#toggle-confirm-pass, 
#toggle-reset-pass, 
#toggle-confirm-reset-pass,
#toggle-current-password,
#toggle-new-password,
#toggle-confirm-password {
    position: absolute;
    right: 10px;
    bottom: 14px;
    background-color: var(--iris-purple);
    color: var(--text-header);
    font-family: var(--main-font);
    font-size: var(--font-size-sm);
    border: 2px solid var(--text-header);
    border-radius: 4px;
    cursor: pointer;
}

#toggle-login-pass:hover, 
#toggle-signup-pass:hover, 
#toggle-confirm-pass:hover, 
#toggle-reset-pass:hover, 
#toggle-confirm-reset-pass:hover,
#toggle-current-password:hover,
#toggle-new-password:hover,
#toggle-confirm-password:hover {
    background-color: var(--text-header);
    color: var(--iris-purple);
    border: 2px solid var(--iris-purple);
}

@media (max-width: 500px) {
    .divider {
        display: none;
    }

    .header-tagline {
        display: none;
    }
}

@media (max-width: 1400px) {
    .header-tagline {
        font-size: var(--font-size-lg);
    } 

    .long-text {
        display: none;
    }
    
    .short-text {
        display: inline; 
    }
}

@media (max-width: 1150px) {
    .header-tagline {
        font-size: var(--font-size-md);
        max-width: 400px;
    } 
}

@media (max-width: 600px) {
    .header-tagline, .divider {
        display: none;
    } 
}

@media (max-width: 900px) {
/* main */
    body {
        overflow: auto;
    }

    main, #login-main {
        flex-direction: column-reverse; 
        height: auto;
        flex: 1;
    }

/* header */
    header {
        padding: clamp(0.5rem, 3vw, 1.25rem) clamp(1rem, 4vw, 2.5rem);
    }

    .header-tagline {
        max-width: 270px;
        font-size: var(--font-size-md);
    } 

    .divider {
        font-size: var(--font-size-xl); 
    }

/* footer */ 
    footer {
        display: flex;
        align-items: center; 
        justify-content: space-evenly;
        gap: clamp(0.5rem, 3vw, 2rem);
        padding: 2rem clamp(1rem, 2vw, 0.75rem);    
    }

    .footer-text {
        display: flex;
        flex-direction: column;
        justify-content: center;
        gap: clamp(0.3rem, 1vw, 0.6rem);
    }

    .footer-nav {
        display: flex;
        align-items: center;
        justify-content: space-evenly;
        gap: clamp(0.5rem, 2vw, 0.75rem);
    }

    #back-to-top {
        display: inline-block;
        font-family: var(--main-font);
        background-color: var(--iris-purple);
        color: var(--text-header);
        border: 5px solid var(--text-header); 
        font-size: var(--font-size-md);
        font-weight: 700;
        padding: 14px 32px;
        border-radius: 8px;
        cursor: pointer;
        transition: background-color 0.2s ease, color 0.2s ease;
        z-index: 99;
        text-decoration: none;
    }

    #back-to-top:hover {
        background-color: var(--text-header); 
        color: var(--iris-purple); 
        border: 5px solid var(--iris-purple);
    }
}