@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;700&display=swap');

/* === CSS VARIABLES === */
:root {
    /* Colors */
    --color-bg-body: #161b22;
    --color-bg-dark: #121212;
    --color-bg-sidebar: #111;
    --color-bg-component: #1e1e1e;
    --color-bg-hover: #2a2a2a;
    --color-bg-accent: #005f87;
    --color-bg-tab-active: #1a3d2a;
    --color-border: #444;
    --color-border-accent: #00ff88;
    --color-border-panel: #30363d;
    --color-text-primary: #ccc;
    --color-text-muted: #888;
    --color-text-accent: #00ff88;
    --color-text-white: #fff;
    --color-text-dark: #333;
    --color-button: #238636;
    --color-button-disabled: #555;
    --color-connection: #333;
    --color-connection-selected: #007bff;
    --color-tooltip-bg: #333;
    --color-tooltip-text: #fff;

    /* Sizes */
    --radius-small: 4px;
    --radius-medium: 6px;
    --radius-large: 8px;
    --font-family-mono: 'JetBrains Mono', monospace;
    --font-family-code: 'Fira Code', monospace;
    --component-padding: 8px;
    --component-gap: 12px;
}

/* === RESET & BASE STYLES === */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--font-family-mono);
    color: var(--color-text-primary);
    display: flex;
    flex-direction: row;
    min-height: 100vh;
    background: radial-gradient(circle at 30% 50%, rgba(0, 255, 136, 0.1), transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(255, 107, 53, 0.1), transparent 50%),
        var(--color-bg-body)
}

/* === LAYOUT === */
#page-container {
    display: flex;
    flex-direction: column;
    width: 100%;
}

#sd-header {
    width: 100%;
    padding: 12px 24px;
    font-weight: bold;
    color: var(--color-text-accent);
    border-bottom: 1px solid var(--color-text-dark);
    display: flex;
    align-items: center;
    justify-content: space-between;

    .header-text {
        font-size: 24px;
        margin: 0;
        text-shadow: 0 0 10px rgba(0, 255, 136, 0.8);
    }
}

#main-content {
    display: flex;
    flex-direction: row;
    height: 100%;
}

/* === SIDEBAR === */
#sidebar {
    width: 100%;
    background-color: var(--color-bg-sidebar);
    display: flex;
    flex-wrap: wrap;
    flex-direction: row;
    gap: var(--component-gap);

    .sidebar-title {
        color: #8b949e;
        font-size: 14px;
        text-transform: uppercase;
        letter-spacing: 1px;
        margin-bottom: 15px;
        padding-bottom: 8px;
        padding-left: 8px;
        border-bottom: 1px solid #303638;
    }
}

/* === COMPONENT ICONS === */
.component-icon,
#arrow-tool {
    position: relative;
    padding: var(--component-padding) 12px;
    background-color: var(--color-bg-component);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    text-align: center;
    cursor: grab;
    user-select: none;
    font-size: 16px;
    color: var(--color-text-primary);
    transition: background-color 0.1s ease;

    &:hover {
        background-color: var(--color-bg-hover);
        border-color: var(--color-border-accent);
    }

    &:active {
        cursor: grabbing;
    }

    &.dragging .tooltip {
        display: none;
    }

    &:hover .tooltip {
        visibility: visible;
        opacity: 1;
        z-index: 1000;
    }
}

#arrow-tool {
    &.active {
        background-color: var(--color-bg-accent);
        color: var(--color-text-white);
        border-color: var(--color-button);
    }
}

/* === TOOLTIP === */
.tooltip {
    visibility: hidden;
    opacity: 0;
    position: absolute;
    top: 100%;
    left: 0;
    z-index: 10;
    background: var(--color-tooltip-bg);
    color: var(--color-tooltip-text);
    padding: 6px 8px;
    border-radius: var(--radius-small);
    white-space: nowrap;
    font-size: 14px;
    line-height: 1.4;
    margin-top: 4px;
    transition: opacity 0.2s;
}

/* === CANVAS === */
#canvas-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-radius: var(--radius-large);
    border: 2px solid var(--color-border-panel);
    overflow: hidden;
    background: var(--color-bg-dark);
    margin: 12px 12px 12px 0;
    padding: 16px;
}

#canvas-container {
    flex: 1;
    position: relative;
    background: var(--color-bg-dark);
    height: 100%;
    margin-top: 16px;
}

#canvas {
    width: 100%;
    height: 90%;
    background: var(--color-bg-dark);
    border: 2px dashed var(--color-border-panel);
    border-radius: var(--radius-large);
}

.dropped {
    cursor: move;

    &.selected rect {
        stroke: #00bcd4;
        stroke-width: 2;
    }
}

/* === TOOLBAR === */
#canvas-toolbar {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 20;
    display: flex;
    gap: 8px;
    background: var(--color-bg-component);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-small);
    padding: 6px;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.4);

    .toolbar-btn {
        background: none;
        border: 1px solid var(--color-border);
        color: var(--color-text-primary);
        padding: 6px 10px;
        border-radius: var(--radius-small);
        font-size: 14px;
        cursor: pointer;
        font-family: var(--font-family-mono);

        &:hover {
            background-color: var(--color-bg-hover);
            border-color: var(--color-border-accent);
        }

        &.active {
            background-color: var(--color-bg-accent);
            color: var(--color-text-white);
            border-color: var(--color-button);
        }
    }
}

/* === PANELS === */
#info-panel {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--color-bg-dark);
    color: var(--color-text-primary);
    padding: 1rem;
    border-radius: var(--radius-large);
    font-family: monospace;
    font-size: 14px;
    min-width: 220px;
    z-index: 10;
    border: 1px solid var(--color-text-dark);
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);

    .panel-title {
        font-weight: bold;
        color: var(--color-text-white);
        font-size: 15px;
        margin-bottom: 0.5rem;
    }

    .panel-metric {
        margin-bottom: 0.4rem;

        .label {
            display: inline-block;
            width: 140px;
            color: var(--color-text-muted);
        }
    }
}

#node-props-panel {
    position: fixed;
    width: 220px;
    background-color: var(--color-bg-sidebar);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-small);
    padding: 12px;
    color: var(--color-text-white);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.6);
    display: none;
    z-index: 10;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.2s ease-out, transform 0.2s ease-out;

    &.visible {
        opacity: 1;
        transform: scale(1);
    }

    h3 {
        margin-top: 0;
        font-size: 15px;
        color: var(--color-text-primary);
    }

    .form-group {
        margin-bottom: 10px;
    }

    label {
        display: block;
        font-weight: bold;
        margin-bottom: 4px;
    }

    select {
        width: 100%;
        padding: 4px;
        font-size: 14px;
    }

    button:disabled {
        background-color: var(--color-button-disabled);
        cursor: not-allowed;
    }
}

.prop-group {
    display: none;
    margin-bottom: 12px;

    label,
    input {
        display: block;
        width: 100%;
        margin-top: 6px;
        font-size: 13px;
    }
}

#score-panel {
    margin-top: 16px;
}

/* === INPUTS & BUTTONS === */
input[type="text"],
input[type="number"] {
    padding: 6px;
    background-color: #222;
    border: 1px solid var(--color-border);
    color: var(--color-text-white);
    border-radius: var(--radius-small);
    font-family: var(--font-family-code);
}

#node-props-save,
#run-button,
.continue-button {
    margin-top: 8px;
    padding: 10px;
    background-color: var(--color-button);
    color: var(--color-text-white);
    border: none;
    border-radius: var(--radius-small);
    cursor: pointer;
    font-size: 14px;

    &:disabled {
        background-color: var(--color-button-disabled);
        cursor: not-allowed;
    }
}

.continue-section {
    display: flex;
    flex-direction: row;
    gap: 30px;
}

.continue-button {
    width: 30%;
}

#github-login-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background-color: #fff;
    color: #000000;
    text-decoration: none;
    border-radius: var(--radius-medium);
    font-weight: 500;
    font-family: var(--font-family-mono);
    font-size: 12px;
    border: 1px solid #2ea043;
    transition: background-color 0.2s ease;
    float: right;

    &:hover {
        background-color: #ccc;
    }

    img {
        width: 18px;
        height: 18px;
    }
}

/* === TABS === */
.tabs {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;

    .tab-labels {
        display: flex;
        cursor: pointer;

        label {
            padding: 10px 20px;
            background: var(--color-bg-body);
            margin-right: 4px;
            margin-bottom: 20px;
            border-radius: var(--radius-small);
        }
    }

    .tab-content {
        border-top: 1px solid var(--color-border-panel);
        padding: 20px 0 0;
        display: none;
        height: 100%;
    }
}

input[name="tab"] {
    display: none;
}

#tab1:checked~.tabs {
    .tab-labels label[for="tab1"] {
        background: var(--color-bg-tab-active);
        font-weight: bold;
        color: var(--color-text-accent);
    }

    #content1 {
        display: flex;
        flex-direction: column;
        height: 100%;
        overflow: hidden;
    }
}

#tab2:checked~.tabs {
    .tab-labels label[for="tab2"] {
        background: var(--color-bg-tab-active);
        font-weight: bold;
        color: var(--color-text-accent);
    }

    #content2 {
        display: flex;
        flex-direction: column;
        height: 100%;
        overflow: hidden;
    }
}

#tab3:checked~.tabs {
    .tab-labels label[for="tab3"] {
        background: var(--color-bg-tab-active);
        font-weight: bold;
        color: var(--color-text-accent);
    }

    #content3 {
        display: flex;
        flex-direction: column;
        height: 100%;
        overflow: hidden;
    }
}

/* === CHALLENGE PANEL === */
#challenge-container {
    width: 15%;
    background: var(--color-bg-dark);
    margin: 12px 12px;
    border: 2px solid var(--color-border-panel);
    border-radius: var(--radius-large);
    padding: 0 12px;

    .challenge-list {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .challenge-item {
        padding: 10px;
        margin: 5px 0;
        background: #21262d;
        border-radius: 6px;
        cursor: pointer;
        transition: all 0.2s ease;
        border-left: 3px solid transparent;
        list-style: none;

        &:hover {
            background: #30363d;
        }

        &.active {
            background: #1a3d2a;
            border-left-color: #00ff88;
        }
    }

    .challenge-name a:link,
    .challenge-name a:visited {
        font-weight: 500;
        margin-bottom: 5px;
        color: #fff;
        text-decoration: none;
    }

    .challenge-difficulty {
        font-size: 0.8rem;
        color: #0b949e;

        &.easy {
            color: #3fb950;
        }

        &.medium {
            color: #d29922;
        }

        &.hard {
            color: #f85149;
        }
    }
}

/* === REQUIREMENTS === */
.requirements-section {
    background: #161b22;
    border: 1px solid #30363d;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;

    .requirements-list {
        margin: 0;
        padding: 0;
        list-style: none;
    }

    .requirement-item {
        position: relative;
        padding: 8px 0 8px 25px;
        margin: 0;
        border-bottom: 1px solid #30363d;

        &:before {
            content: "✓";
            color: #00ff88;
            position: absolute;
            left: 0;
        }
    }
}

/* === MODAL === */
.modal {
    position: absolute;
    top: 30%;
    left: 50%;
    transform: translate(-50%, -30%);
    background: #121212;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #444;
    z-index: 999;
    color: #ccc;

    .modal-content label {
        display: block;
        margin: 10px 0;
    }

    .modal-actions {
        margin-top: 10px;
        text-align: right;
    }

    input,
    select {
        width: 100%;
        padding: 6px;
        margin-top: 4px;
        background: #222;
        border: 1px solid #444;
        color: #fff;
        border-radius: 4px;
    }
}

/* === MISC === */
.userbox {
    display: flex;
    align-items: center;
    gap: 12px;

    .avatar {
        width: 24px;
        height: 24px;
        border-radius: 12px;
    }
}

/* === CHATBOT STYLES ===*/
#start-chat {
    position: fixed;
    bottom: 25px;
    right: 25px;
    padding: 0.75rem;
    background: #22c55e;
    border: none;
    border-radius: 12px;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.3);
    animation: breathe 1s ease-in-out infinite;
    transform-origin: center bottom;
}

.chat {
    display: none;

    section {
        --_scrollbar_width: 8px;
        display: flex;
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
        overflow-y: auto;
        scrollbar-width: var(--_scrollbar_width);
        scrollbar-color: rgb(33, 38, 45) transparent;
        height: 52vh;
        width: 400px;

        &::-webkit-scrollbar {
            width: var(--_scrollbar_width);
        }

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

        &::-webkit-scrollbar-thumb {
            background: rgba(34, 197, 94, 0.3);
            border-radius: 2px;
        }

        p.other,
        p.me {
            --_border_width: 2px;
            --_border_radius: 8px;
            max-width: 85%;
            padding: 0.75rem 1rem;
            background: rgba(14, 19, 13, 0.4);
            border-radius: var(--_border_radius);
            font-size: 0.9rem;
            line-height: 1.4;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(34, 197, 94, 0.1);
            animation: messageSlide 0.4s ease-out;
        }

        .me {
            margin-left: auto;
            border-right: var(--_border_width) solid #22c55e;
            border-radius: var(--_border_radius) 4px 4px var(--_border_radius);
            color: #e5f5e5;
        }

        .other {
            border-left: var(--_border_width) solid #38bdf8;
            border-radius: 4px var(--_border_radius) var(--_border_radius) 4px;
            color: #e0f2fe;
        }
    }

    footer {
        display: flex;
        align-items: center;
        gap: 0.75rem;
        padding: 0.5rem 1rem;
        background: #21262d;
        border-top: 1px solid rgba(34, 197, 94, 0.1);
        border-radius: 0 0 0.5rem 0.5rem;

        textarea {
            --_padding: 0.75rem;
            --_lines: 3;
            border: 0;
            flex: 1;
            resize: none;
            padding: var(--_padding);
            height: calc((var(--_lines) * 1lh) + (var(--_padding) * 2));
            background: #161b22;
            border-radius: 12px;
            color: #fff;
            font-size: 0.9rem;
            outline: none;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);

            &::placeholder {
                color: rgba(255, 255, 255, 0.5);
            }

            &:focus {
                box-shadow: 0 0 0 2px rgba(34, 197, 94, 0.1);
                background: rgba(14, 19, 13, 0.9);
            }
        }

        button {
            padding: 0.75rem;
            background: transparent;
            border: none;
            border-radius: 12px;
            color: #22c55e;
            cursor: pointer;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            min-width: 48px;

            &:hover {
                color: #fff;
                transform: translateY(-2px);
            }

            &:active {
                transform: translateY(0);
            }

            svg {
                --_size: 1.25rem;
                width: var(--_size);
                height: var(--_size);
            }
        }
    }
}

#chat-header {
    padding: 16px 8px;
    box-sizing: border-box;
    background: #21262d;

    .chat-title {
        font-family: Arial, Helvetica, sans-serif;
        font-size: 18px;
        margin: 0;
        padding: 0;
    }

    .powered-by {
        margin: 0;
        font-size: 12px;
    }
}

.chat-checkbox {
    display: none;

    &:checked+.chat {
        display: grid;
        position: fixed;
        bottom: 100px;
        right: 0;
        grid-template-rows: 1fr auto;
        max-width: 400px;
        height: 60vh;
        max-height: 70vh;
        background: #161b22;
        border-radius: 0.5rem;
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(34, 197, 94, 0.1);
        backdrop-filter: blur(20px);
    }
}

.loading-indicator {
    max-width: 85%;
    padding: 0.75rem 1rem;
    background: rgba(56, 189, 248, 0.05);
    border: 1px solid rgba(56, 189, 248, 0.3);
    border-left: 4px solid #38bdf8;
    border-radius: 4px 16px 16px 4px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    animation: messageSlide 0.4s ease-out;

    span {
        color: #38bdf8;
        font-size: 0.8rem;
        opacity: 0.8;
    }
}

.loading-dots {
    display: flex;
    gap: 0.2rem;

    .loading-dot {
        width: 4px;
        height: 4px;
        background: #38bdf8;
        border-radius: 50%;
        animation: loadingDot 1.4s infinite;

        &:nth-child(2) {
            animation-delay: 0.2s;
        }

        &:nth-child(3) {
            animation-delay: 0.4s;
        }
    }
}

/* === KEYFRAMES === */
@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(15px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes loadingDot {

    0%,
    60%,
    100% {
        transform: scale(1);
        opacity: 0.4;
    }

    30% {
        transform: scale(1.3);
        opacity: 1;
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.6;
        transform: scale(1.1);
    }
}

@keyframes breathe {

    0%,
    100% {
        transform: scale(1) translateY(0);
    }

    50% {
        transform: scale(1.02) translateY(-1px);
    }
}