:root {
    color-scheme: dark;
    --color: #e8eaed;
    --color-bis: #292929;
    --color-lesser: #b0b0b0;
    --accent: #abc7fa; 
    --accent-bis: #8ab4f8;
    --bg: #202124;
    --bg-nav: #2a2b2e;
    --bg-compo: #303030;
    --bg-accent: #37373a;
    --input-bg: #3c4043;
    --font-family: Arial, sans-serif;
    --error: #f44336;
    --error-bis: #d32f2f;
    --color-anim1: #abc7fa;
    --color-anim2: #115dd6;
}

html {
    font-family: var(--font-family);
    font-size: 16px;
}

body {
    margin: 0;
    padding: 0;
    background-color: var(--bg);
    color: var(--color);
    box-sizing: border-box;
}

*{
    box-sizing: border-box;
}

/* Header styles */

header {
    width: min(52rem, calc(100% - 2rem));
    margin: clamp(2rem, 10vh, 6rem) auto;
    padding: clamp(1.5rem, 5vw, 3rem);
    border: 1px solid var(--bg-accent);
    border-radius: 1.5rem;
    background: var(--bg-compo);
    box-shadow: 0 1.5rem 4rem rgb(0 0 0 / 30%);
}

.login-info {
    text-align: center;
}

.login-info h1 {
    margin: 0;
    color: var(--accent-bis);
    letter-spacing: -0.04em;
}

#login-form {
    display: flex;
    flex-direction: row;
    gap: 1.5rem;
    align-items: center;
    justify-content: space-around;
}

#login-form .divider {
    width: 3px;
    height: 150px;
    background-color: var(--accent);
}

#login-form fieldset {
    border: 1px solid var(--bg-accent);
    border-radius: 1rem;
    padding: 1rem;
    background-color: var(--bg-accent);
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-direction: column;
    width: 100%;
}

#login-form fieldset legend {
    color: var(--accent);
    font-weight: bold;
}

#login-form input{
    background-color: var(--input-bg);
    border: 1px solid var(--bg-accent);
    border-radius: 0.5rem;
    padding: 0.5rem;
    color: var(--color);
    width: calc(100% - 1rem);
    outline: 1px solid var(--accent);
}

#login-form input:disabled {
    background-color: var(--bg-accent);
    color: var(--color);
}

#login-form input:focus {
    outline: 3px solid var(--accent-bis);
}

#login-form button {
    background-color: var(--accent-bis);
    border: none;
    border-radius: 0.5rem;
    padding: 0.5rem 1rem;
    color: var(--color);
    cursor: pointer;
    width: clamp(6rem, 50%, 12rem);
}

#login-form button:disabled {
    background-color: var(--bg-accent);
    color: var(--color);
    cursor: not-allowed;
}

#login-form button:hover:not(:disabled) {
    background-color: var(--accent-bis);
}

#login-form button:focus {
    outline: 3px solid var(--color);
}

/* Small width header */
@media (max-width: 600px) {
    #login-form {
        flex-direction: column;
        gap: 1rem;
    }
    #login-form .divider {
        display: none;
    }
}


/* Main styles */

#screen-main {
    margin:0;
    padding: 0;
    display: flex;
    flex-direction: row;
}


/* Navigation styles */
nav {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    background-color: var(--bg-nav);
    padding-top: 1rem;
    width: 340px;
    height: 100dvh;
    z-index: 1;
}

#nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
}

nav button {
    background-color: var(--accent-bis);
    border: none;
    border-radius: 0.5rem;
    padding: 1rem;
    margin-right: auto;
    margin-left: auto;
    width: clamp(6rem, 50%, 12rem);
    color: var(--color-bis);
    cursor: pointer;
}

nav button:hover {
    background-color: var(--accent);
}

#btn-logoff {
    width: clamp(5rem, 20%, 12rem);
    background-color: var(--error);
    font-style: italic;
    font-weight: bold;
    text-transform: uppercase;
}

#btn-logoff:hover {
    background-color: var(--error-bis);
}


#list-conversations {
    display: flex;
    flex-direction: column;
    scrollbar-width: 3px;
    scrollbar-color: var(--accent) var(--bg-accent);
    overflow-x: hidden;
}

#list-conversations .conversation-item {
    border-left: 3px solid var(--bg-nav);
    padding: 0.5rem;
    height: 5rem;
    display: flex;
    gap: 0.25rem;
    flex-direction: column;
    cursor: pointer;
}

#list-conversations .conversation-item span {
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
    width: 80%;
    color: var(--color-lesser);
}

#list-conversations .conversation-item.current-conv {
    border-left: 3px solid var(--accent);
    background-color: var(--bg-accent);

}
#list-conversations .conversation-item.unread:not(.current-conv) {
    /* animation couleur defilante pour les conversations non lues border-left */
    border-left: 3px solid var(--accent);
    animation: unread-animation 1s infinite alternate;
}
#list-conversations .conversation-item:hover {
    background-color: var(--bg-accent);
}

/* small width nav styles */
@media (max-width: 600px) {
    /* if nav has no class nav-active */
    nav:not(.nav-active) {
        display: none;
    }
    nav {
        width: 80%;
        max-width: 80vw;
        position: absolute;
    }
    div#tchat-container {
        width: 100%;
    }
    #tchat-container section#current-chat, #tchat-container section#no-chat, #tchat-container section#list-users-container{
        width: 100vw;
        max-width: 100vw;
    }
}

@keyframes unread-animation {
    0% {
        border-left-color: var(--bg-nav);
    }
    100% {
        border-left-color: var(--color-anim2);
    }
}

/* Tchat sections styles */
#tchat-container {
    width: calc(100% - 340px);
    z-index: 0;
    margin: 0;
    padding: 0;
}

#tchat-container section {
    max-width: calc(100vw - 340px);
    height: 100dvh;
}

#no-chat {
    display: flex;
    align-items: center;
    justify-content: center;
}


.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    border-bottom: 1px solid var(--bg-accent);
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
}

.btn-back-to-list {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem;
    background-color: var(--accent);
    color: var(--color-bis);
    cursor: pointer;
}


/* current-chat styles */
#current-chat {
    display: flex;
    flex-direction: column;
    height: 100dvh;
}

#rightChatHeader {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
}

#securityLevelIndicator {
    display: flex;
    flex-direction: row;
    align-items: center;
    cursor: pointer;
}

#messages {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    padding: 1rem;
    /* max-width: clamp(20rem, 80%, 80vw); */
}

#input-chat {
    display: flex;
    align-items: center;
    padding: 1rem;
    border-top: 1px solid var(--bg-accent);
}

/* Message item styles */
#messages .message-item {
    margin-bottom: 0.5rem;
    display: flex;
    flex-direction: column;
}

#messages .message-item.bubble-left {
    align-items: flex-start;
    
}

#messages .message-item.bubble-right {
    align-items: flex-end;
}

#messages .bubble-content {
    background-color: var(--bg-accent);
    padding: 0.5rem 1rem;
    border-radius: 1rem;
    max-width: 80%;
    word-wrap: break-word;
}

#messages .bubble-time {
    font-size: 0.75rem;
    color: var(--color-lesser);
    margin-top: 0.25rem;
}


/* Input chat styles */
#input-chat textarea {
    flex: 1;
    resize: none;
    padding: 0.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--bg-accent);
    background-color: var(--input-bg);
    font-size: 1rem;
    font-family: inherit;
}

#input-chat button {
    margin-left: 0.5rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem;
    background-color: var(--accent);
    color: var(--color-bis);
    cursor: pointer;
}

/* List users styles */
#list-users-container {
    display: flex;
    flex-direction: column;
    height: 100dvh;
}

/* #list-users-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    border-bottom: 1px solid var(--bg-accent);
} */
#researchBar {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    border-bottom: 1px solid var(--bg-accent);
}
#researchBar input {
    flex: 1;
    padding: 0.5rem;
    border-radius: 0.5rem;
    border: 1px solid var(--bg-accent);
    background-color: var(--input-bg);
    font-size: 1rem;
    font-family: inherit;
}

#researchBar button {
    margin-left: 0.5rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem;
    background-color: var(--accent);
    color: var(--color-bis);
    cursor: pointer;
}

#list-users {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

/* User items styles */
#list-users .user-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--bg-accent);
}

#list-users .user-item .user-name {
    font-weight: bold;
}

#list-users .user-item .user-status {
    font-size: 0.75rem;
    color: var(--color-lesser);
}

/* Popover styles */
#popover-security-level-indicator {
    position: absolute;
    background-color: var(--input-bg);
    border: 1px solid var(--bg-accent);
    border-radius: 0.5rem;
    padding: 1rem;
    box-shadow: 0 0.5rem 1rem rgb(0 0 0 / 30%);
    z-index: 1000;
}

#form-security-level {
    display: flex;
    flex-direction: column;
}

#form-security-level label {
    margin-bottom: 0.5rem;
}

#form-security-level input[type="radio"] {
    margin-right: 0.5rem;
}

#security-level-details {
    margin-top: 1rem;
}

#passphrase-text {
    margin-top: 1rem;
    font-size: 0.875rem;
    background-color: var(--input-bg);
    color: var(--color-lesser);
    height: 1.5rem;
}

#passphrase-text::-ms-reveal, 
#passphrase-text::-ms-clear {
    display: none;
}

#passphrase-toggle-eye {
    background-color: none;
    border: none;
}

#btn-security-quit {
    margin-top: 1rem;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem;
    background-color: var(--accent);
    color: var(--color-bis);
    cursor: pointer;
}


/* Common classes */

.hidden {
    display: none !important;
}

.toast {
    position: fixed;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent);
    color: var(--color);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 0.5rem 1rem rgb(0 0 0 / 30%);
    z-index: 1000;
}

.toast.info {
    background-color: var(--accent);
}
.toast.success {
    background-color: var(--accent-bis);
}
.toast.error {
    background-color: var(--error);
}