/* ------------------------- VARIABLES ------------------------- */
:root {
    /* Colors */
    --color-bg: #fff;
    --color-bg-overlay: rgba(255, 255, 255, 0.88);
    --color-bg-overlay-blur: rgba(255, 255, 255, 0.5);
    --color-text: #1a1a1a;
    --color-text-muted: #666;
    --color-primary: #111;
    --color-primary-hover: #333;
    --color-outline: #000;
    --color-hover: #f0f0f0;
    --color-scrollbar: rgba(102, 126, 234, 0.3);

    /* Sizes */
    --radius: 12px;
    --radius-lg: 28px;
    --spacing: 16px;
    --spacing-lg: 24px;
    --font-base: 1rem;
    --font-lg: 1.15rem;
    --font-header: 2rem;

    /* Shadows */
    --shadow-lg:
        0 40px 80px rgba(0, 0, 0, 0.15), 0 20px 40px rgba(102, 126, 234, 0.1);
    --shadow-sm: 0 6px 18px rgba(102, 126, 234, 0.25);
}

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

html,
body {
    width: 100%;
    height: 100%;
    font-family: "Inter", sans-serif;
    font-size: var(--font-base);
    line-height: 1.5;
    color: var(--color-text);
    overflow-x: hidden;
    background: var(--color-bg);
}

/* ------------------------- CANVAS ------------------------- */
#shader-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    cursor: default;
}

/* ------------------------- MODAL ------------------------- */
.overlay-modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;

    opacity: 0;
    transform: scale(0.85);
    pointer-events: none;
    transition:
        transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1),
        opacity 0.6s;
}

.overlay-modal.active {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

.overlay-content {
    position: relative;
    width: 90%;
    max-width: 600px;
    max-height: 85vh;
    padding: var(--spacing-lg);
    overflow-y: auto;

    /* Restore backdrop blur */
    background: var(--color-bg-overlay);
    backdrop-filter: blur(30px);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-bg-overlay-blur);

    box-shadow: var(--shadow-lg);
}

/* ------------------------- HEADER ------------------------- */
.overlay-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.overlay-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid lightgray;
    margin-bottom: var(--spacing);
}

.overlay-header h1 {
    font-size: var(--font-header);
    font-weight: 800;
    margin-bottom: 8px;
}

.profile-subtitle {
    font-size: var(--font-lg);
    font-weight: 600;
    color: var(--color-text-muted);
}

/* ------------------------- BLURB ------------------------- */
.overlay-blurb {
    background: var(--color-hover);
    padding: var(--spacing);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius);
}

.overlay-blurb p {
    margin-bottom: var(--spacing);
}

/* ------------------------- CLOSE BUTTON ------------------------- */
.close-btn {
    position: absolute;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;

    color: var(--color-text);
    background: transparent;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.3s;
}

.close-btn:hover,
.close-btn:focus {
    background: var(--color-hover);
    outline: none;
}

/* ------------------------- FORM ------------------------- */
.overlay-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing);
    margin-bottom: var(--spacing-lg);
    transition: all 0.4s ease;
}

.overlay-form.hidden {
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    margin-bottom: 0;
}

.overlay-form label {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--color-text);
}

.overlay-form input,
.overlay-form textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: var(--radius);
    border: 2px solid var(--color-outline);
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.3s;
    margin-bottom: var(--spacing);
}

.overlay-form input:focus,
.overlay-form textarea:focus {
    outline: 2px solid var(--color-primary);
    border-color: var(--color-primary);
}

/* ------------------------- BUTTONS ------------------------- */
button,
.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    min-height: 48px;
    padding: 0 20px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

/* Outline button (default) */
.action-outline {
    border: 2px solid var(--color-outline);
    background: transparent;
    color: var(--color-text);
}

.action-outline:hover,
.action-outline:focus {
    background: var(--color-hover);
    outline: none;
}

/* Primary button (filled) */
.action-primary {
    border: none;
    background: var(--color-primary);
    color: #fff;
}

.action-primary:hover,
.action-primary:focus {
    background: var(--color-primary-hover);
    outline: none;
}

/* Submit button (forms) */
.overlay-form button {
    background: var(--color-primary);
    color: #fff;
    border: none;
}

.overlay-form button:hover,
.overlay-form button:focus {
    background: var(--color-primary-hover);
    outline: none;
}

/* ------------------------- ACTIONS ------------------------- */
.overlay-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing);
}

/* ------------------------- SCROLLBAR ------------------------- */
.overlay-content::-webkit-scrollbar {
    width: 8px;
}

.overlay-content::-webkit-scrollbar-thumb {
    background: var(--color-scrollbar);
    border-radius: var(--radius);
}

/* ------------------------- MOBILE IMPROVEMENTS ------------------------- */
@media (max-width: 480px) {
    .overlay-content {
        padding: var(--spacing);
    }

    .overlay-form input,
    .overlay-form textarea {
        padding: 10px 12px;
    }

    .overlay-avatar {
        width: 100px;
        height: 100px;
    }

    .overlay-header h1 {
        font-size: 1.5rem;
    }

    .profile-subtitle {
        font-size: 1rem;
    }
}