/*
    Random Password Generator – Utility Page
    ══════════════════════════════════════════════════
    Parte della sezione "Lab & Utility" di AttilioViscido.it

    DESIGN SYSTEM:
    Stesso design token block delle altre utility.
*/

:root {
    --primary: #076FB7;
    --primary-light: #2A8CD4;
    --accent: #D3B574;
    --accent-hover: #b89a57;
    --dark-bg: #0D1117;
    --card-bg: #161B22;
    --card-border: rgba(211, 181, 116, 0.15);
    --text-main: #c9d1d9;
    --text-white: #ffffff;
    --text-muted: #8b949e;
    --error: #f85149;
    --success: #3fb950;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* ── Reset & base ───────────────────────────────── */
*, *::before, *::after {
    margin: 0; padding: 0; box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
    position: relative;
}

/* ── Animated background ────────────────────────── */
.bg-grid {
    position: fixed;
    inset: 0; z-index: 0;
    background-image:
        linear-gradient(rgba(7, 111, 183, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(7, 111, 183, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

.bg-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.18;
    pointer-events: none;
    z-index: 0;
    animation: driftGlow 18s ease-in-out infinite alternate;
}

.glow-1 {
    width: 500px; height: 500px;
    background: var(--primary);
    top: -100px; right: -100px;
    animation-delay: 0s;
}

.glow-2 {
    width: 400px; height: 400px;
    background: var(--accent);
    bottom: -80px; left: -80px;
    animation-delay: -9s;
    opacity: 0.1;
}

@keyframes driftGlow {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-40px, 40px) scale(1.1); }
    100% { transform: translate(40px, -20px) scale(0.95); }
}

/* ── Compact Site Header ────────────────────────── */
.site-header {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 100;
    background: rgba(13, 17, 23, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.site-header-inner {
    max-width: 900px; margin: 0 auto; padding: 0 24px;
    height: 60px; display: flex; align-items: center; justify-content: space-between;
}
.back-link {
    display: flex; align-items: center; gap: 12px;
    text-decoration: none; color: var(--text-main); font-weight: 600;
    transition: var(--transition);
}
.back-link:hover { color: var(--accent); }
.back-link i { font-size: 0.9rem; opacity: 0.7; transition: var(--transition); }
.back-link:hover i { transform: translateX(-3px); opacity: 1; }
.logo-text { font-size: 1.1rem; font-weight: 800; color: var(--text-white); }
.logo-dot { color: var(--accent); }
.breadcrumb {
    display: flex; align-items: center; gap: 8px; font-size: 0.82rem;
    color: var(--text-muted); background: rgba(255, 255, 255, 0.05);
    padding: 5px 14px; border-radius: 20px; border: 1px solid rgba(255, 255, 255, 0.07);
}
.breadcrumb i { color: var(--accent); font-size: 0.8rem; }

/* ── Main Wrapper ───────────────────────────────── */
.app-wrapper {
    position: relative; z-index: 1; width: 100%; max-width: 580px;
    padding: 90px 20px 40px; display: flex; flex-direction: column;
    align-items: center; gap: 16px;
}

/* ── App Card ───────────────────────────────────── */
.app-card {
    background: var(--card-bg); border: 1px solid var(--card-border);
    border-radius: 24px; padding: 36px; width: 100%; display: flex;
    flex-direction: column; gap: 28px;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(255, 255, 255, 0.04) inset;
    animation: slideUp 0.55s cubic-bezier(0.16, 1, 0.3, 1) both;
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(24px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── App Header ─────────────────────────────────── */
.app-header { display: flex; align-items: center; gap: 16px; }
.app-icon-wrap {
    width: 52px; height: 52px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff; font-size: 1.4rem; border-radius: 14px; display: flex;
    align-items: center; justify-content: center; flex-shrink: 0;
    box-shadow: 0 8px 20px rgba(7, 111, 183, 0.4);
}
.app-header h1 { font-size: 1.6rem; font-weight: 800; color: var(--text-white); line-height: 1.2; }
.app-subtitle { font-size: 0.82rem; color: var(--text-muted); margin-top: 2px; }
.reset-btn {
    margin-left: auto; background: rgba(255, 255, 255, 0.05); border: 1px solid rgba(255, 255, 255, 0.08);
    color: var(--text-muted); cursor: pointer; padding: 9px; border-radius: 10px;
    display: flex; justify-content: center; align-items: center; transition: var(--transition); flex-shrink: 0;
}
.reset-btn:hover {
    color: var(--accent); background: rgba(211, 181, 116, 0.1); border-color: var(--accent);
}

/* ── Success Toast ──────────────────────────────── */
.success-toast {
    display: flex; align-items: center; gap: 12px;
    background: rgba(63, 185, 80, 0.12); border: 1px solid rgba(63, 185, 80, 0.3);
    border-radius: 10px; padding: 12px 16px; font-size: 0.9rem; font-weight: 600;
    color: var(--success); animation: fadeIn 0.4s ease;
}
.success-toast.hidden { display: none; }
.success-toast i { font-size: 1.1rem; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ── Privacy note ───────────────────────────────── */
.privacy-note {
    font-size: 0.78rem; color: var(--text-muted); opacity: 0.6;
    display: flex; align-items: center; gap: 6px; text-align: center;
}
.privacy-note i { color: var(--accent); opacity: 0.8; }

/* ── Formatting specific per Password Generator ─── */

/* Password Display */
.password-display-wrap {
    display: flex; align-items: center; justify-content: space-between;
    background: rgba(0,0,0,0.4); border: 1px solid rgba(255,255,255,0.1);
    border-radius: 14px; padding: 16px 20px; gap: 16px; position: relative;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2) inset;
}
.password-display {
    flex: 1; font-family: monospace; font-size: 1.35rem; font-weight: 600;
    color: var(--text-white); word-break: break-all; letter-spacing: 2px;
    user-select: all; text-align: center;
}
.password-display.placeholder {
    color: var(--text-muted); font-style: italic; font-family: 'Outfit', sans-serif;
    letter-spacing: normal; font-weight: 400; font-size: 1rem;
}
.copy-btn {
    background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08);
    color: var(--text-muted); font-size: 1.1rem; cursor: pointer;
    transition: var(--transition); border-radius: 10px; width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.copy-btn:hover:not(:disabled) {
    color: var(--text-white); background: rgba(7, 111, 183, 0.4); border-color: var(--primary);
    transform: translateY(-2px); box-shadow: 0 4px 12px rgba(7, 111, 183, 0.3);
}

.controls-section { display: flex; flex-direction: column; gap: 12px; }

/* Section Formats */
.format-label {
    font-size: 0.88rem; font-weight: 600; color: var(--text-muted);
    letter-spacing: 0.03em; text-transform: uppercase;
    display: flex; align-items: center; gap: 8px; white-space: nowrap;
}
.format-label i { color: var(--primary-light); }

/* Range Slider */
.length-row { display: flex; flex-direction: column; gap: 12px; margin-bottom: 20px; }
.length-header { display: flex; justify-content: space-between; align-items: center; }
.length-value {
    background: rgba(255,255,255,0.08); padding: 4px 12px; border-radius: 8px;
    font-weight: 700; color: var(--text-white); font-size: 0.95rem;
    border: 1px solid rgba(255,255,255,0.05); min-width: 45px; text-align: center;
}
.slider-wrap { display: flex; flex-direction: column; gap: 8px; }
.slider-wrap input[type="range"] { -webkit-appearance: none; appearance: none; width: 100%; background: transparent; }
.slider-wrap input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none; appearance: none; height: 20px; width: 20px; border-radius: 50%;
    background: var(--text-white); cursor: pointer; margin-top: -7px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.4); border: 2px solid var(--primary);
    transition: box-shadow 0.2s;
}
.slider-wrap input[type="range"]::-webkit-slider-thumb:hover {
    box-shadow: 0 0 10px rgba(7, 111, 183, 0.6);
}
.slider-wrap input[type="range"]::-webkit-slider-runnable-track {
    width: 100%; height: 6px; cursor: pointer; background: rgba(255,255,255,0.1); border-radius: 3px;
}
.slider-wrap input[type="range"]:focus { outline: none; }
.slider-labels { display: flex; justify-content: space-between; font-size: 0.75rem; color: var(--text-muted); font-weight: 600; }

/* Toggles & Options Grid */
.options-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.toggle-option {
    display: flex; justify-content: space-between; align-items: center;
    background: rgba(0,0,0,0.2); padding: 14px 16px; border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.04); cursor: pointer; transition: var(--transition);
}
.toggle-option:hover { background: rgba(0,0,0,0.35); border-color: rgba(255,255,255,0.08); }
.toggle-option span { font-size: 0.9rem; font-weight: 600; color: var(--text-main); }
.toggle-switch { position: relative; width: 42px; height: 24px; flex-shrink: 0; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-switch .slider {
    position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(255,255,255,0.12); transition: .3s; border-radius: 24px;
}
.toggle-switch .slider:before {
    position: absolute; content: ""; height: 18px; width: 18px;
    left: 3px; bottom: 3px; background-color: var(--text-muted);
    transition: .3s; border-radius: 50%;
}
.toggle-switch input:checked + .slider { background-color: var(--primary); box-shadow: 0 0 10px rgba(7, 111, 183, 0.4); }
.toggle-switch input:checked + .slider:before { transform: translateX(18px); background-color: var(--text-white); }

/* Buttons Customization */
.action-row { display: flex; gap: 12px; flex-wrap: wrap; }
.generate-btn {
    width: 100%; background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: white; border: none; border-radius: 12px; padding: 16px;
    font-family: 'Outfit', sans-serif; font-size: 1rem; font-weight: 700; cursor: pointer;
    display: flex; justify-content: center; align-items: center; gap: 10px;
    transition: var(--transition); box-shadow: 0 6px 20px rgba(7, 111, 183, 0.35); letter-spacing: 0.02em;
}
.generate-btn:hover { background: linear-gradient(135deg, var(--primary-light), var(--primary)); transform: translateY(-2px); box-shadow: 0 10px 30px rgba(7, 111, 183, 0.5); }
.generate-btn:active { transform: translateY(1px); box-shadow: 0 4px 12px rgba(7, 111, 183, 0.3); }

.action-btn {
    flex: 1; min-width: 140px; display: flex; align-items: center; justify-content: center; gap: 9px;
    padding: 13px 20px; border: none; border-radius: 12px; font-family: 'Outfit', sans-serif;
    font-size: 0.95rem; font-weight: 700; cursor: pointer; transition: var(--transition); letter-spacing: 0.02em;
}
.action-btn--download { background: linear-gradient(135deg, var(--accent), var(--accent-hover)); color: #0D1117; box-shadow: 0 6px 20px rgba(211, 181, 116, 0.3); }
.action-btn--download:hover { transform: translateY(-2px); box-shadow: 0 10px 28px rgba(211, 181, 116, 0.45); }

/* Result Section */
.result-section.hidden { display: none; }
.result-section { border-top: 1px solid rgba(255,255,255,0.06); padding-top: 20px; display: flex; flex-direction: column; gap: 12px;}

/* Modal Description */
.modal-overlay {
    position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,0.7);
    backdrop-filter: blur(5px); z-index: 1000; display: flex; justify-content: center; align-items: center;
    opacity: 1; transition: var(--transition);
}
.modal-overlay.hidden { opacity: 0; pointer-events: none; }
.modal-content {
    background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 18px;
    padding: 28px; width: 90%; max-width: 420px; box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
    display: flex; flex-direction: column; gap: 16px; transform: translateY(0) scale(1);
    transition: var(--transition);
}
.modal-overlay.hidden .modal-content { transform: translateY(20px) scale(0.95); }
.modal-content h3 { font-size: 1.3rem; color: var(--text-white); display: flex; align-items: center; gap: 8px;}
.modal-content h3::before { content: "\f023"; font-family: "Font Awesome 6 Free"; font-weight: 900; color: var(--accent); }
.modal-content p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.5; }
.modal-content input {
    background: rgba(0,0,0,0.4); border: 1px solid rgba(255,255,255,0.1); border-radius: 10px;
    padding: 12px 14px; color: var(--text-white); font-family: 'Outfit', sans-serif; font-size: 0.95rem; width: 100%;
    transition: var(--transition);
}
.modal-content input:focus {
    outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(7, 111, 183, 0.25);
}
.modal-actions { display: flex; justify-content: flex-end; gap: 12px; margin-top: 8px; }
.modal-actions button {
    padding: 12px 20px; border-radius: 10px; font-family: 'Outfit', sans-serif;
    font-weight: 700; font-size: 0.95rem; cursor: pointer; transition: var(--transition);
}
.cancel-btn { background: transparent; border: 1px solid rgba(255,255,255,0.1); color: var(--text-muted); }
.cancel-btn:hover { background: rgba(255,255,255,0.05); color: var(--text-white); }
.confirm-btn { background: var(--primary); border: 1px solid var(--primary); color: var(--text-white); box-shadow: 0 4px 15px rgba(7, 111, 183, 0.3); }
.confirm-btn:hover { background: var(--primary-light); border-color: var(--primary-light); transform: translateY(-1px); }

/* Responsive adjustments */
@media (max-width: 520px) {
    .app-card { padding: 24px 18px; border-radius: 20px; gap: 22px; }
    .app-header h1 { font-size: 1.35rem; }
    .site-header-inner { padding: 0 16px; }
    .breadcrumb { display: none; }
    .options-grid { grid-template-columns: 1fr; }
    .password-display { font-size: 1.15rem; }
}