/* ============================================================
   whiteboard.css — Styles for the Whiteboard tool
   Follows WisdomBrains theme (navy #1e3a8a, orange #f97316 hover)
   ============================================================ */

:root {
    --primary: #667eea;
    --secondary: #764ba2;
    --text-dark: #2c3e50;
    --text-light: #6c757d;
    --white: #ffffff;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Arial', sans-serif;
    background: var(--white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    color: var(--text-dark);
}

/* Toolbar */
.wb-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    justify-content: center;
    padding: 12px 15px;
    background: #f8fafc;
    border-bottom: 1px solid rgba(102, 126, 234, 0.15);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.wb-toolbar label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.wb-toolbar input[type="color"] {
    width: 36px;
    height: 36px;
    border: 2px solid #ddd;
    cursor: pointer;
    border-radius: 6px;
    padding: 2px;
}

.wb-toolbar input[type="range"] {
    width: 100px;
    accent-color: #1e3a8a;
}

.wb-toolbar button {
    background: #1e3a8a;
    color: #ffffff;
    border: none;
    border-radius: 6px;
    padding: 10px 18px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.wb-toolbar button:hover {
    background-color: #f97316;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.wb-toolbar button.active {
    background: #f97316;
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

/* Canvas wrapper */
.wb-canvas-wrap {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 15px;
    overflow: hidden;
    background: #f8fafc;
}

#whiteboard {
    background: #fff;
    border: 2px solid rgba(30, 58, 138, 0.2);
    border-radius: 8px;
    cursor: crosshair;
    touch-action: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

/* Fullscreen mode */
.wb-fullscreen {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    background: #f8fafc;
}

.wb-fullscreen .wb-toolbar {
    flex-shrink: 0;
}

.wb-fullscreen .wb-canvas-wrap {
    flex: 1;
    padding: 0;
}

.wb-fullscreen #whiteboard {
    border-radius: 0;
    border: none;
}

/* Responsive */
@media (max-width: 768px) {
    .wb-toolbar {
        gap: 8px;
        padding: 10px;
    }

    .wb-toolbar label {
        font-size: 0.8rem;
    }

    .wb-toolbar button {
        padding: 8px 14px;
        font-size: 0.8rem;
    }

    .wb-toolbar input[type="range"] {
        width: 80px;
    }

    .wb-canvas-wrap {
        padding: 8px;
    }
}

@media (max-width: 480px) {
    .wb-toolbar {
        gap: 6px;
        padding: 8px;
    }

    .wb-toolbar button {
        padding: 6px 10px;
        font-size: 0.75rem;
    }

    .wb-toolbar input[type="color"] {
        width: 30px;
        height: 30px;
    }

    .wb-toolbar input[type="range"] {
        width: 60px;
    }
}