:root {
    --color-primary: #9381ff;
    --color-secondary: #b8b8ff;
    --color-bg-light: #f8f7ff;
    --color-terra: #ffeedd;
    --color-peach: #ffd8be;

    --bg-base: var(--color-bg-light);
    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-border: rgba(255, 255, 255, 0.4);
    --text-main: #2b2b36;
    --text-muted: #6a6a7c;
    --element-bg: rgba(0, 0, 0, 0.04);
    --element-hover: rgba(0, 0, 0, 0.08);
    --divider: rgba(0, 0, 0, 0.05);
    --shadow-soft: 0 8px 32px rgba(147, 129, 255, 0.1);
    
    --font-primary: 'Funnel Display', sans-serif;
}

body.dark-mode {
    --bg-base: #16161a;
    --glass-bg: rgba(30, 30, 35, 0.65);
    --glass-border: rgba(255, 255, 255, 0.06);
    --text-main: #f8f7ff;
    --text-muted: #9595a6;
    --element-bg: rgba(255, 255, 255, 0.06);
    --element-hover: rgba(255, 255, 255, 0.1);
    --divider: rgba(255, 255, 255, 0.06);
    --shadow-soft: 0 8px 32px rgba(0, 0, 0, 0.4);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

html {
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-base);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background-color 0.4s ease;
}

.main-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.2rem;
    padding: 1rem;
}

body.dark-mode footer a {
    color: var(--color-primary);
}

.ambient-bg {
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100vw; 
    height: 100vh;
    z-index: -1; 
    overflow: hidden; 
    opacity: 0.8;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(70px);
    animation: float 15s infinite alternate ease-in-out;
}

footer {
    opacity: 0.8;
    text-align: center;
    font-size: 0.95rem;
}

footer a {
    text-decoration: none;
    font-weight: 600;
}

footer a:hover {
    text-decoration: underline;
}

.blob-1 {
    width: 350px; 
    height: 350px;
    background: var(--color-secondary);
    top: -10%; 
    left: -10%;
}

.blob-2 {
    width: 300px; 
    height: 300px;
    background: var(--color-peach);
    bottom: -5%; 
    right: -10%;
    animation-delay: -5s;
}

.blob-3 {
    width: 250px; 
    height: 250px;
    background: var(--color-terra);
    top: 40%; 
    left: 40%;
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 40px) scale(1.1); }
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(28px);
    -webkit-backdrop-filter: blur(28px);
    border: 1px solid var(--glass-border);
    border-radius: 28px;
    padding: 2.5rem;
    width: 90%;
    max-width: 440px;
    box-shadow: var(--shadow-soft);
    transition: all 0.4s ease;
    margin-top: 2rem;
    margin-bottom: 2rem;
}

header { 
    text-align: center; 
    margin-bottom: 2rem; 
}

.logo { 
    font-size: 2.8rem; 
    margin-bottom: 0.5rem; 
}

h1 { 
    font-size: 2rem; 
    font-weight: 700; 
    letter-spacing: -0.5px; 
    margin-bottom: 0.2rem; 
}

.subtitle { 
    font-size: 1rem;
    color: var(--text-muted); 
    font-weight: 500; 
}

.section-label { 
    font-size: 0.85rem; 
    text-transform: uppercase; 
    letter-spacing: 1px; 
    color: var(--text-muted); 
    font-weight: 600; 
    margin-bottom: 0.8rem; 
    display: block;
}

.slider-label {
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    font-size: 1.1rem;
    font-weight: 600; 
    margin-bottom: 1rem; 
    color: var(--text-main);
}

.segmented-control {
    display: flex; 
    position: relative;
    background: var(--element-bg); 
    border-radius: 14px;
    padding: 5px; 
    margin-bottom: 1.8rem;
}

.segmented-control input { 
    display: none; 
}

.segmented-control label {
    flex: 1; 
    text-align: center; 
    padding: 12px 0; 
    font-size: 1rem;
    font-weight: 600; 
    color: var(--text-muted); 
    cursor: pointer; 
    z-index: 2;
    transition: color 0.3s ease;
}

.segmented-control input[id="tab-pin"]:checked ~ label[for="tab-pin"],
.segmented-control input[id="tab-pass"]:checked ~ label[for="tab-pass"] {
    color: var(--text-main);
}

.glider {
    position: absolute; 
    top: 5px; 
    left: 5px;
    width: calc(50% - 5px); 
    height: calc(100% - 10px);
    background: var(--bg-base); 
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    z-index: 1;
}

.segmented-control input[id="tab-pass"]:checked ~ .glider { 
    transform: translateX(100%); 
}

.options-wrapper { 
    position: relative; 
    min-height: 100px; 
    margin-bottom: 1.8rem; 
}

.options-section {
    position: absolute; 
    top: 0; 
    left: 0; 
    width: 100%; 
    opacity: 0;
    pointer-events: none; 
    transform: translateY(10px);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.options-section.active {
    position: relative; 
    opacity: 1; 
    pointer-events: all; 
    transform: translateY(0);
}

.pin-segmented-control {
    display: flex; 
    position: relative;
    background: var(--element-bg); 
    border-radius: 12px;
    padding: 4px; 
    overflow: hidden;
}

.pin-segmented-control input { 
    display: none; 
}

.pin-segmented-control label {
    flex: 1; 
    text-align: center; 
    padding: 12px 0; 
    cursor: pointer;
    font-weight: 700; 
    font-size: 1.1rem; 
    color: var(--text-muted);
    z-index: 2; 
    transition: color 0.3s ease;
}

.pin-segmented-control input[id="pin-4"]:checked ~ label[for="pin-4"],
.pin-segmented-control input[id="pin-5"]:checked ~ label[for="pin-5"],
.pin-segmented-control input[id="pin-6"]:checked ~ label[for="pin-6"] {
    color: #1a1a24;
}

body.dark-mode .pin-segmented-control input:checked ~ label {
    color: #16161a;
}

.pin-glider {
    position: absolute; 
    top: 4px; 
    left: 4px;
    width: calc(33.333% - 2.66px); 
    height: calc(100% - 8px);
    background: var(--color-secondary);
    border-radius: 8px; z-index: 1;
    box-shadow: 0 2px 8px rgba(184, 184, 255, 0.4);
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.pin-segmented-control input[id="pin-4"]:checked ~ .pin-glider { 
    transform: translateX(0); 
}

.pin-segmented-control input[id="pin-5"]:checked ~ .pin-glider { 
    transform: translateX(100%); 
}

.pin-segmented-control input[id="pin-6"]:checked ~ .pin-glider { 
    transform: translateX(200%); 
}

.slider-group { 
    margin-bottom: 1.8rem; 
}

.badge {
    background: var(--color-secondary); 
    color: #16161a;
    padding: 3px 10px; 
    border-radius: 12px; 
    font-size: 1rem;
}

.apple-slider {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--element-bg);
    outline: none;
}

.apple-slider::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: white;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    cursor: pointer;
    transition: transform 0.1s;
}

.apple-slider::-moz-range-thumb {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: white;
    border: none;
    box-shadow: 0 2px 6px rgba(0,0,0,0.15);
    cursor: pointer;
}

.apple-slider::-webkit-slider-thumb:active { transform: scale(1.1); }

.toggles-group { 
    background: var(--element-bg); 
    border-radius: 16px; 
    padding: 0 1.2rem; 
}

.divider { 
    border: none; 
    border-top: 1px solid var(--divider); 
    margin: 0; 
}

.apple-toggle {
    display: flex; 
    justify-content: space-between; 
    align-items: center;
    padding: 1.2rem 0; 
    cursor: pointer;
}

.toggle-label { 
    font-weight: 500; 
    font-size: 1rem; 
}

.apple-toggle input { 
    display: none; 
}

.toggle-switch {
    width: 52px; 
    height: 30px; 
    background: var(--text-muted);
    border-radius: 15px; 
    position: relative; 
    transition: background 0.3s ease;
}

.toggle-switch::after {
    content: ''; 
    position: absolute; 
    top: 3px; 
    left: 3px;
    width: 24px; 
    height: 24px; 
    background: white; 
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.apple-toggle input:checked + .toggle-switch { 
    background: var(--color-primary); 
}

.apple-toggle input:checked + .toggle-switch::after { 
    transform: translateX(22px); 
}

.primary-btn {
    width: 100%; 
    padding: 18px;
    background: var(--color-primary); 
    color: #16161a;
    font-family: inherit; 
    font-size: 1.2rem; font-weight: 700;
    border: none; 
    border-radius: 16px; 
    cursor: pointer; 
    margin-top: 1.8rem; 
    margin-bottom: 1.8rem;
    box-shadow: 0 8px 24px rgba(147, 129, 255, 0.3);
    transition: all 0.3s ease;
}

.primary-btn:hover {
    background: #8472f7; 
    transform: translateY(-2px);
    box-shadow: 0 12px 28px rgba(147, 129, 255, 0.4);
}

.primary-btn:active { 
    transform: translateY(0); 
}

.output-container {
    display: flex; 
    align-items: center; 
    background: var(--element-bg);
    border: 1px solid var(--glass-border); 
    border-radius: 16px;
    padding: 10px 10px 10px 18px; 
    cursor: pointer; 
    transition: background 0.2s;
}

.output-container:hover { 
    background: var(--element-hover); 
}

.output-container input {
    border: none; 
    background: transparent; 
    outline: none;
    color: var(--text-main); 
    font-family: monospace;
    font-size: 1.3rem; 
    font-weight: 600; 
    width: 100%;
    cursor: pointer; 
    letter-spacing: 2px;
}

.icon-btn {
    background: transparent; 
    border: none; 
    color: var(--color-primary);
    padding: 12px; 
    border-radius: 12px; 
    cursor: pointer;
    display: flex; 
    align-items: center; 
    justify-content: center;
    transition: background 0.2s;
}

.icon-btn:hover { 
    background: rgba(147, 129, 255, 0.15); 
}

.toast {
    position: absolute;
    bottom: -50px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--text-main);
    color: var(--bg-base);
    padding: 10px 24px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 1rem;
    width: max-content;
    max-width: 90%;
    white-space: nowrap;
    text-align: center;      
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
}

.toast.show { 
    opacity: 1; bottom: -24px; 
}

.theme-btn {
    position: fixed; 
    bottom: 2rem; 
    right: 2rem; 
    width: 60px; 
    height: 60px;
    background: var(--glass-bg); 
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border); 
    border-radius: 50%;
    color: var(--text-main); 
    cursor: pointer;
    display: flex; 
    align-items: center; 
    justify-content: center;
    box-shadow: var(--shadow-soft); 
    transition: all 0.3s ease; 
    z-index: 1000;
}

.theme-btn:hover { 
    transform: scale(1.05); 
}

@media (max-width: 480px) {
    html { 
        font-size: 14px; 
    }
    
    .glass-panel { 
        padding: 1.8rem; 
        width: 92%; 
    }

    .theme-btn { 
        bottom: 1.5rem; 
        right: 1.5rem; 
        width: 50px; 
        height: 50px; 
    }

    .blob { 
        filter: blur(50px); 
    }

    .blob-1 { 
        width: 250px; 
        height: 250px; 
        top: -5%; 
        left: -15%; 
    }

    .blob-2 { 
        width: 220px; 
        height: 220px; 
        bottom: 5%; 
        right: -15%; 
    }

    .blob-3 { 
        width: 180px; 
        height: 180px; 
        top: 30%; 
        left: 30%; 
    }
}