/* fonts */
@font-face {
    font-family: Lodestone;
    src: url('/files/FFXIV_Lodestone_SSF.ttf') format('truetype');
    unicode-range: U+E020-E0DB;
}

@font-face {
    font-family: 'Inter var';
    font-weight: 100 900;
    font-style: oblique 0deg 10deg;
    src: url('Inter.var.woff2') format('woff2');
}

/* variables */
:root {
    --fg: white;
    --fg-faint: #a0a0a0;
    --fg-scrollbar: #404040;
    --bg: #101010;
    --bg-input: #202020;
    --bg-input-hover: #282828;
    --focus-color: #4060a0;

    --gradient-clickable: linear-gradient(to bottom, #404040, var(--bg-input) 65%, var(--bg-input));
    --gradient-clickable-hover: linear-gradient(to bottom, #505050, var(--bg-input-hover) 65%, var(--bg-input-hover));

    --timestamp-width: 70px;
}

/* reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

* {
    color: var(--fg);
    font-family: Lodestone, 'Inter var', sans-serif;
    font-feature-settings: 'tnum', 'calt' 0;  /* calt appears to be on by default */
}

html {
    font-size: 16px;
}

/* layout and global styles */
body {
    padding: 50px;
    height: 100dvh;
    background-color: var(--bg-input-hover);
}

body > main.chat {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    background-color: var(--bg);
    border-radius: 20px;
    box-shadow: 0 0 50px 0 rgba(0, 0, 0, 0.5);
}

body > main.auth {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    width: 100%;
    height: 100%;

    h1 {
        font-size: 1.5rem;
        font-weight: 400;
    }

    input { width: 150px; }

    input, button {
        padding: 5px 20px;
        font-size: 1rem;
        border: 3px solid transparent;
        border-radius: 20px;
        background-color: var(--bg-input);

        &:focus {
            outline: 2px solid var(--focus-color);
        }
    }

    button {
        padding: 5px 15px;
        border: 3px solid var(--bg-input);
        background-image: var(--gradient-clickable);
        cursor: pointer;

        &:hover {
            border-color: var(--bg-input-hover);
            background-color: var(--bg-input-hover);
            background-image: var(--gradient-clickable-hover);
        }
    }
}

/* message list */
section#messages {
    position: relative;
    flex: 1;
    min-height: 0;
    padding: 20px;
    line-height: 1.5;

    .scroll-container {
        height: 100%;
        overflow-y: scroll;
        scrollbar-color: var(--fg-scrollbar) var(--bg);

        &.more-messages::before {
            content: '';
            position: absolute;
            bottom: -20px;
            left: 100px;
            width: calc(100% - 200px);
            height: 200px;
            background-image: radial-gradient(50% 20% at 50% 100%, #60a0ff40, transparent);
            pointer-events: none;
        }
    }

    ol {
        list-style-type: none;
    }

    li {
        display: flex;
        align-items: flex-start;
        gap: 10px;

        .timestamp {
            flex: 0 0 var(--timestamp-width);
            color: var(--fg-faint);
            text-align: right;
        }

        .message {
            white-space: pre-wrap;
        }
    }
}

#timestamp-width-probe {
    position: absolute;
    top: 0;
    left: 0;
    pointer-events: none;
    opacity: 0;
}

/* input bar, channel selector, ... */
section#input {
    flex-grow: 0;
    padding: 20px;

    form {
        display: flex;
        gap: 10px;
    }

    input, button, select {
        font-size: 1rem;
        border: 3px solid transparent;
        border-radius: 20px;
        background-color: var(--bg-input);

        &:focus {
            outline: 2px solid var(--focus-color);
        }
    }

    button, select {
        padding: 5px 15px;
        border: 3px solid var(--bg-input);
        background-image: var(--gradient-clickable);
        cursor: pointer;

        &:hover {
            border-color: var(--bg-input-hover);
            background-color: var(--bg-input-hover);
            background-image: var(--gradient-clickable-hover);
        }
    }

    .select-container, button {
        position: relative;
        flex-grow: 0;
        flex-shrink: 0;
    }

    .select-container {
        flex-basis: 0;

        &::before {
            /* "message-circle" icon from https://github.com/feathericons/feather, under MIT license */
            mask-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 11.5a8.38 8.38 0 0 1-.9 3.8 8.5 8.5 0 0 1-7.6 4.7 8.38 8.38 0 0 1-3.8-.9L3 21l1.9-5.7a8.38 8.38 0 0 1-.9-3.8 8.5 8.5 0 0 1 4.7-7.6 8.38 8.38 0 0 1 3.8-.9h.5a8.48 8.48 0 0 1 8 8v.5z"/></svg>');
        }

        select {
            width: 100%;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            appearance: none;
            color: transparent;
        }
    }

    button {
        padding-left: calc(20px + 1.5rem);

        &::before {
            /* "send" icon from https://github.com/feathericons/feather, under MIT license */
            mask-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><line x1="22" y1="2" x2="11" y2="13"/><polygon points="22 2 15 22 11 13 2 9 22 2"/></svg>');
        }
    }

    .select-container::before, button::before {
        content: '';
        position: absolute;
        left: 15px;
        top: 50%;
        transform: translateY(-50%);
        width: 1.3rem;
        height: 1.3rem;
        background-color: var(--fg);
        mask-size: 100%;
        pointer-events: none;
    }

    .select-container::before {
        left: 50%;
        transform: translateX(-50%) translateY(-50%);
    }

    .input-container {
        flex: 1;
        position: relative;

        #chat-input {
            width: 100%;
            padding: 5px 20px;
        }

        #channel-hint {
            position: absolute;
            top: -1.2em;
            left: 23px;
            font-size: 1.1rem;
            font-weight: 550;
            pointer-events: none;
        }
    }
}

/* icons, emotes */
.gfd-icon {
    display: inline-block;
    position: relative;
    vertical-align: middle;
    zoom: 0.75;

    &::before {
        content: '';
        display: block;
        position: absolute;
        top: 0;
        left: 0;
        transform: translateY(-50%);
        pointer-events: none;
    }
}

.emote-icon {
    display: inline-block;
    position: relative;
    width: 2rem;
    vertical-align: middle;

    img {
        content: '';
        display: block;
        position: absolute;
        top: 0;
        left: 0;
        width: 2rem;
        transform: translateY(-50%);
        pointer-events: none;
    }
}

/*** mobile ***/
@media ((max-width: 600px) and (orientation: portrait)) or (max-width: 400px) {
    body {
        padding: 0;
    }

    body > main {
        border-radius: 0;
        box-shadow: none;
    }

    section#input {
        button {
            max-width: 0;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            color: transparent;
        }

        button::before {
            left: 50%;
            transform: translateX(-50%) translateY(-50%);
        }
    }
}