*, *::before, *::after { box-sizing: border-box; }

body {
    margin: 0;
    background: #1a1a2e;
    font-family: 'Noto Sans', sans-serif;
    color: #e0e0e0;
    overflow: hidden;
}

/* ── FULL-SCREEN DISPLAY ── */
.fullscreen-display {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 32px 128px;
    background: linear-gradient(160deg, #12122a 0%, #1a1a2e 100%);
    overflow: hidden;
    transition: background 0.65s ease;
    isolation: isolate;
}

/* ── Impact effect on generate ── */
.password-display.impact {
    animation: impactPulse 0.35s ease-out;
}
@keyframes impactPulse {
    0%   { transform: scale(1); }
    20%  { transform: scale(1.06); filter: brightness(1.3); }
    50%  { transform: scale(0.97); }
    75%  { transform: scale(1.01); }
    100% { transform: scale(1); }
}

/* ── Copy sparks ── */
.copy-spark {
    position: fixed;
    width: var(--spark-size, 5px);
    height: var(--spark-size, 5px);
    border-radius: 50%;
    pointer-events: none;
    z-index: 100;
    animation: sparkFly var(--spark-dur, 0.7s) ease-out forwards;
    box-shadow: 0 0 6px 1px var(--spark-glow, rgba(251,191,36,0.6));
}
@keyframes sparkFly {
    0%   { opacity: 1; transform: translate(0, 0) scale(1); }
    60%  { opacity: 0.8; }
    100% { opacity: 0; transform: translate(var(--dx), var(--dy)) scale(0.2); }
}

/* Password */
.password-wrap { width: 100%; }
.password-display {
    font-family: 'Arvo', serif;
    font-weight: 700;
    font-size: clamp(32px, 8vw, 80px);
    word-break: break-all;
    text-align: center;
    line-height: 1.15;
    width: 100%;
    overflow: hidden;
    cursor: pointer;
    transition: filter 0.15s;
    user-select: none;
    -webkit-user-select: none;
}
.password-display:hover { filter: brightness(1.12); }

/* Character colour classes */
.ch-upper { color: #93c5fd; }
.ch-lower { color: #e2e8f0; }
.ch-num   { color: #4ade80; }
.ch-sym   { color: #fb923c; }

/* Error message rendered inside the password area */
.pw-error {
    color: #f87171;
    font-size: clamp(14px, 2.2vw, 16px);
    font-family: 'Noto Sans', sans-serif;
    font-weight: 400;
    opacity: 0.8;
    letter-spacing: 0;
}

/* ── Strength bar — centre-expanding fire bar ── */
.strength-wrap { width: min(448px, 90%); }
.strength-bar-track {
    width: 100%;
    height: 8px;
    background: transparent;
    border-radius: 4px;
    display: flex;
    justify-content: center;
    overflow: visible;
}
#strength-bar {
    position: relative;
    height: 100%;
    width: 0px;
    border-radius: 4px;
    transition: width 0.55s cubic-bezier(0.34,1.2,0.64,1),
                box-shadow 0.55s ease,
                background 0.45s ease;
    animation: flamePulse 3s ease-in-out infinite;
}
@keyframes flamePulse {
    0%, 100% { filter: brightness(1);    }
    40%      { filter: brightness(1.45); }
    72%      { filter: brightness(0.85); }
}
@keyframes crispPulse {
    0%, 100% { filter: brightness(1)    saturate(1.05); }
    30%      { filter: brightness(1.22) saturate(1.18); }
    65%      { filter: brightness(0.9)  saturate(0.96); }
}

/* ── Electric sparks on strength bar ── */
.strength-sparks {
    position: absolute;
    left: 0;
    right: 0;
    top: -2px;
    bottom: -2px;
    pointer-events: none;
    overflow: visible;
    transition: opacity 0.5s ease;
}
.elec-spark {
    position: absolute;
    width: 2px;
    height: var(--spark-h, 4px);
    background: var(--spark-color, #60a5fa);
    border-radius: 1px;
    opacity: 0;
    pointer-events: none;
    box-shadow: 0 0 6px 2px var(--spark-color, #60a5fa);
    animation: elecSpark var(--dur, 0.3s) ease-out infinite var(--delay, 0s);
}
@keyframes elecSpark {
    0%   { opacity: 0; transform: translateY(0) scaleY(0.5); }
    10%  { opacity: 1; transform: translateY(calc(var(--travel-y) * 0.15)) scaleY(1.2); }
    35%  { opacity: 0.3; transform: translateY(calc(var(--travel-y) * 0.5)) scaleY(0.5); }
    55%  { opacity: 0.8; transform: translateY(calc(var(--travel-y) * 0.4)) scaleY(1); }
    100% { opacity: 0; transform: translateY(var(--travel-y)) scaleY(0.1); }
}

/* ── Password content wrapper (shifts to stay centered above card) ── */
.password-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    width: 100%;
    transform: translateY(var(--card-offset, -24px));
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Sparkle field ── */
.sparkle-field {
    position: absolute;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    transition: opacity 0.8s ease, transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    transform: translateY(var(--card-offset, -24px));
}
.sparkle {
    position: absolute;
    border-radius: 50%;
    background: var(--spark-color, rgba(134,239,172,0.8));
    opacity: 0;
    animation: sparkleTwinkle var(--dur, 1.5s) ease-in-out infinite var(--delay, 0s);
}
.sparkle.warping {
    animation: sparkleWarp var(--dur, 1.0s) linear infinite var(--delay, 0s);
}
@keyframes sparkleTwinkle {
    0%, 100% { opacity: 0;   transform: scale(0.3); }
    50%      { opacity: 1;   transform: scale(1.3); }
}
@keyframes sparkleWarp {
    0%   { opacity: var(--start-op, 0);  transform: rotate(var(--angle,0deg)) translateX(0)                           scaleX(0.5)                      scaleY(1); }
    20%  { opacity: var(--start-op, 0);  transform: rotate(var(--angle,0deg)) translateX(calc(var(--travel) * 0.2))    scaleX(2)                        scaleY(1); }
    30%  { opacity: var(--peak-op, 1);   transform: rotate(var(--angle,0deg)) translateX(calc(var(--travel) * 0.3))    scaleX(var(--wx,8))              scaleY(1); }
    85%  { opacity: var(--peak-op, 1);   transform: rotate(var(--angle,0deg)) translateX(var(--travel))                scaleX(var(--wx,8))              scaleY(1); }
    100% { opacity: 0;                   transform: rotate(var(--angle,0deg)) translateX(var(--travel2))               scaleX(calc(var(--wx,8) * 0.7))  scaleY(1); }
}

/* Generate spans full width in settings card */
#generate-btn { width: 100%; }

/* ── Shared button base ── */
.btn {
    font-family: 'Noto Sans', sans-serif;
    font-size: 14px;
    font-weight: 700;
    padding: 8px 24px;
    border-radius: 8px;
    border: 2px solid #7f5af0;
    cursor: pointer;
    letter-spacing: 0.04em;
    transition: background 0.15s, border-color 0.15s, color 0.15s;
    white-space: nowrap;
}
/* Primary — filled purple */
.btn-primary {
    background: #7f5af0;
    color: #fff;
}
.btn-primary:hover  { background: #6b46e0; border-color: #6b46e0; }
.btn-primary:active { background: #5a35cf; border-color: #5a35cf; }

/* Secondary — neutral ghost */
.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: #d0d7ea;
    border-color: rgba(255, 255, 255, 0.11);
}
.btn-secondary:hover  { background: rgba(255, 255, 255, 0.09); color: #e8edf5; border-color: rgba(255,255,255,0.2); }
.btn-secondary.copied { border-color: #2cb67d; color: #2cb67d; background: rgba(44,182,125,0.12); }

/* ── SETTINGS CARD (centered glass sheet) ── */
.settings-card {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 10;
    max-width: 600px;
    width: 100%;
    margin: 0 auto;
    background: rgba(22, 33, 62, 0.72);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-bottom: none;
    border-radius: 24px 24px 0 0;
    transform: translateY(calc(100% - 48px));
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    max-height: 80vh;
    display: flex;
    flex-direction: column;
}
.settings-card.open {
    transform: translateY(0);
}

.settings-card-handle {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 48px;
    cursor: pointer;
    flex-shrink: 0;
    -webkit-tap-highlight-color: transparent;
}
.handle-bar {
    display: block;
    width: 48px;
    height: 4px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.2);
    transition: background 0.2s;
}
.settings-card-handle:hover .handle-bar {
    background: rgba(255, 255, 255, 0.4);
}
.handle-chevron {
    display: none;
    width: 16px;
    height: 16px;
    position: relative;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
}
.handle-chevron::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 10px;
    height: 10px;
    border-left: 2.5px solid rgba(255, 255, 255, 0.35);
    border-bottom: 2.5px solid rgba(255, 255, 255, 0.35);
    transform: rotate(135deg);
    transition: border-color 0.2s;
}
.settings-card.open .handle-chevron { transform: rotate(180deg); }
.settings-card-handle:hover .handle-chevron::before { border-color: rgba(255, 255, 255, 0.6); }
@media (min-width: 769px) {
    .handle-bar { display: none; }
    .handle-chevron { display: block; }
}

/* Mobile: hide toggle switches — cards themselves act as tappable toggles */
@media (max-width: 768px) {
    .toggle-switch { display: none; }
    .fullscreen-display { padding: 32px; }
}

/* Disable transition during drag */
.settings-card.dragging {
    transition: none !important;
}

.settings-card-content {
    overflow-y: auto;
    padding: 0 24px 32px;
    flex: 1;
    overscroll-behavior: contain;
}

.options-inner { max-width: 576px; margin: 0 auto; }

/* ── Card shared base (used for length + type cards) ── */
.type-card {
    background: rgba(13, 13, 32, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 2px solid rgba(255, 255, 255, 0.06);
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.2s;
}

/* ── Length card ── */
#card-length {
    border-color: rgba(127, 90, 240, 0.28);
    margin-bottom: 8px;
}
.length-inner { padding: 16px; }
.length-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}
#card-length .type-label { color: #9070d8; }

/* Custom length input with arrow buttons */
.length-input-wrap {
    display: flex;
    align-items: center;
    background: rgba(127, 90, 240, 0.1);
    border: 1px solid rgba(127, 90, 240, 0.35);
    border-radius: 8px;
    overflow: hidden;
}
.length-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    color: rgba(127, 90, 240, 0.5);
    font-size: 16px;
    cursor: pointer;
    transition: color 0.15s, background 0.15s;
    -webkit-tap-highlight-color: transparent;
    user-select: none;
}
.length-arrow:disabled {
    opacity: 0.25;
    cursor: default;
    pointer-events: none;
}
.length-arrow:hover {
    color: #7f5af0;
    background: rgba(127, 90, 240, 0.1);
}
.length-arrow:active {
    background: rgba(127, 90, 240, 0.2);
}
#length-num {
    width: 48px;
    background: transparent;
    border: none;
    border-radius: 0;
    color: #c4b5fd;
    font-family: 'Noto Sans', sans-serif;
    font-size: 16px;
    font-weight: 700;
    padding: 4px 0;
    text-align: center;
    outline: none;
}
#length-num::-webkit-inner-spin-button,
#length-num::-webkit-outer-spin-button {
    -webkit-appearance: none;
    display: none;
}
#length-num { -moz-appearance: textfield; }

/* Sleek custom range slider */
#length-slider {
    display: block;
    width: 100%;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    border-radius: 2px;
    outline: none;
    cursor: pointer;
    background: linear-gradient(to right, #7f5af0 50%, #1e1e3a 50%);
}
#length-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px; height: 24px;
    border-radius: 50%;
    background: #7f5af0;
    cursor: pointer;
    border: 2px solid #16213e;
    box-shadow: 0 0 0 2px rgba(127,90,240,0.28);
    transition: box-shadow 0.15s, transform 0.1s;
}
#length-slider::-webkit-slider-thumb:hover {
    box-shadow: 0 0 0 4px rgba(127,90,240,0.28);
    transform: scale(1.1);
}
#length-slider::-moz-range-thumb {
    width: 24px; height: 24px;
    border-radius: 50%;
    background: #7f5af0;
    cursor: pointer;
    border: 2px solid #16213e;
}

/* ── Type cards grid ── */
.type-cards {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 8px;
    margin-bottom: 16px;
}
#card-symbols { grid-column: 1 / -1; }

@media (max-width: 480px) {
    .type-cards { grid-template-columns: 1fr 1fr; }
}

/* Whole header is a <label> → full area is clickable */
.type-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    gap: 8px;
    cursor: pointer;
    user-select: none;
    transition: background 0.15s;
    border-radius: 8px 8px 0 0;
}
.type-card-header:hover { background: rgba(255,255,255,0.03); }

.type-info { display: flex; flex-direction: column; gap: 4px; }
.type-label { font-size: 14px; font-weight: 700; color: #55557a; transition: color 0.2s; }
.type-sub   { font-size: 12px; font-weight: 400; transition: color 0.2s; }

/* Inactive */
.type-card:not(.active) .type-sub { color: #44445e; }

/* Active borders + per-type colours */
#card-upper.active   { border-color: rgba(147,197,253,0.7); }
#card-upper.active   .type-sub   { color: #93c5fd; }
#card-upper.active   .type-label { color: #93c5fd; }

#card-lower.active   { border-color: rgba(200,215,235,0.7); }
#card-lower.active   .type-sub   { color: #8899b8; }
#card-lower.active   .type-label { color: #e2e8f0; }

#card-numbers.active { border-color: rgba(74,222,128,0.7); }
#card-numbers.active .type-sub   { color: #4ade80; }
#card-numbers.active .type-label { color: #4ade80; }

#card-symbols.active { border-color: rgba(251,146,60,0.7); }
#card-symbols.active .type-sub   { color: #fb923c; }
#card-symbols.active .type-label { color: #fb923c; }

/* Toggle switch — enlarged for mobile */
.toggle-switch { position: relative; width: 48px; height: 24px; flex-shrink: 0; cursor: pointer; }
.toggle-switch input { opacity: 0; position: absolute; width: 0; height: 0; }
.toggle-track {
    position: absolute; inset: 0;
    background: #1a1a38;
    border: 1px solid #2a2a50;
    border-radius: 12px;
    transition: background 0.2s, border-color 0.2s;
}
.toggle-track::after {
    content: '';
    position: absolute;
    left: 2px; top: 2px;
    width: 18px; height: 18px;
    border-radius: 50%;
    background: #333358;
    transition: transform 0.2s, background 0.2s;
}

#card-upper   input:checked ~ .toggle-track { background: rgba(147,197,253,0.18); border-color: #93c5fd; }
#card-upper   input:checked ~ .toggle-track::after { transform: translateX(24px); background: #93c5fd; }
#card-lower   input:checked ~ .toggle-track { background: rgba(200,215,235,0.12); border-color: #9aabbb; }
#card-lower   input:checked ~ .toggle-track::after { transform: translateX(24px); background: #e2e8f0; }
#card-numbers input:checked ~ .toggle-track { background: rgba(74,222,128,0.16); border-color: #4ade80; }
#card-numbers input:checked ~ .toggle-track::after { transform: translateX(24px); background: #4ade80; }
#card-symbols input:checked ~ .toggle-track { background: rgba(251,146,60,0.16); border-color: #fb923c; }
#card-symbols input:checked ~ .toggle-track::after { transform: translateX(24px); background: #fb923c; }

/* ── Symbol settings icon + actions row ── */
.type-card-actions { display: flex; align-items: center; gap: 8px; }
.sym-settings-btn {
    display: none;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    padding: 4px;
    color: rgba(251, 146, 60, 0.45);
    font-size: 22px;
    cursor: pointer;
    transition: color 0.15s;
    -webkit-tap-highlight-color: transparent;
}
.sym-settings-btn.visible { display: flex; }
.sym-settings-btn:hover { color: rgba(251, 146, 60, 0.8); }
.sym-settings-btn.active { color: #fb923c; }

/* ── Symbol sub-options (now a grid sibling of #card-symbols) ── */
.symbol-options {
    grid-column: 1 / -1;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    margin-top: -8px;
    background: rgba(13, 13, 32, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: none;
    border-radius: 0 0 8px 8px;
}
.symbol-options.visible {
    max-height: 700px;
    border: 2px solid rgba(255, 255, 255, 0.06);
    border-top: none;
}

/* When symbols active, options border matches */
#card-symbols.active + .symbol-options.visible {
    border-color: rgba(251, 146, 60, 0.7);
    border-top: none;
}

/* Symbols card loses bottom radius when options expanded */
#card-symbols.expanded {
    border-radius: 8px 8px 0 0;
}
@media (min-width: 769px) {
    #card-symbols.expanded { border-bottom: none; }
}

.sym-opts-inner {
    padding: 16px;
    border-top: 1px solid #1e1e38;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sym-opt-row { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.sym-opt-row label { font-size: 12px; color: #9999cc; white-space: nowrap; }
.sym-opt-row input[type="checkbox"] {
    accent-color: #fb923c;
    cursor: pointer;
    width: 24px;
    height: 24px;
}
.sym-opt-row input[type="number"] {
    width: 48px;
    background: #16213e;
    border: 1px solid #2d2d5e;
    border-radius: 4px;
    color: #e0e0e0;
    font-family: 'Noto Sans', sans-serif;
    font-size: 12px;
    padding: 4px;
    text-align: center;
    outline: none;
}
.sym-opt-row input[type="range"] { flex: 1; min-width: 80px; }
.sym-opt-row input:disabled { opacity: 0.3; cursor: not-allowed; }
.sym-count-val { font-size: 12px; color: #fb923c; min-width: 24px; }

/* Custom orange symbol slider — matches length slider styling */
#max-sym-slider {
    display: block;
    -webkit-appearance: none;
    appearance: none;
    height: 4px;
    border-radius: 2px;
    outline: none;
    cursor: pointer;
    background: linear-gradient(to right, #fb923c 20%, #1e1e3a 20%);
}
#max-sym-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px; height: 24px;
    border-radius: 50%;
    background: #fb923c;
    cursor: pointer;
    border: 2px solid #16213e;
    box-shadow: 0 0 0 2px rgba(251,146,60,0.28);
    transition: box-shadow 0.15s, transform 0.1s;
}
#max-sym-slider::-webkit-slider-thumb:hover {
    box-shadow: 0 0 0 4px rgba(251,146,60,0.28);
    transform: scale(1.1);
}
#max-sym-slider::-moz-range-thumb {
    width: 24px; height: 24px;
    border-radius: 50%;
    background: #fb923c;
    cursor: pointer;
    border: 2px solid #16213e;
}

/* Symbol picker */
.sym-picker-label {
    font-size: 12px; color: #8888aa;
    text-transform: none; letter-spacing: normal; margin-bottom: 4px;
}
.sym-chip-controls { display: flex; gap: 4px; margin-bottom: 8px; }
.sym-chip-controls button {
    background: transparent;
    border: 1px solid #2d2d5e;
    border-radius: 4px;
    color: #555;
    cursor: pointer;
    font-family: 'Noto Sans', sans-serif;
    font-size: 12px;
    padding: 4px 8px;
    transition: border-color 0.1s, color 0.1s;
}
.sym-chip-controls button:hover { border-color: #fb923c; color: #fb923c; }

.symbol-picker { display: flex; flex-wrap: wrap; gap: 4px; }
.sym-chip {
    background: #1a1a3e;
    border: 1px solid #2a2a5a;
    border-radius: 4px;
    color: #fb923c;
    cursor: pointer;
    font-family: 'Noto Sans', sans-serif;
    font-size: 14px;
    padding: 4px 8px;
    min-width: 32px;
    min-height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.1s, border-color 0.1s, color 0.1s;
    user-select: none;
    line-height: 1;
}
.sym-chip:hover { border-color: #fb923c; background: #1f1008; }
.sym-chip.off { background: transparent; border-color: #1c1c38; color: #2a2a4a; }

/* Validation — errors now shown in the password area instead */
#validation-msg { display: none; }

/* ── Mobile compact overrides (must come after base rules) ── */
@media (max-width: 768px) {
    .type-sub { display: none; }
    .type-card-header { padding: 12px; }

    /* Symbols sits next to Numbers instead of full-width */
    #card-symbols { grid-column: auto; }

    /* Gear icon: always reserve space, hidden when inactive, match label height */
    .sym-settings-btn { display: flex !important; font-size: 14px; padding: 0; line-height: 1; }
    .sym-settings-btn:not(.visible) { visibility: hidden; }

    /* Options panel: keep gap, restore top border for clean separation */
    .symbol-options { margin-top: 0; }
    #card-symbols.active + .symbol-options.visible {
        border-top: 2px solid rgba(251, 146, 60, 0.7);
    }

    /* Tab connector: squared corners where Symbols meets options */
    #card-symbols.expanded {
        border-radius: 8px;
        border-bottom-right-radius: 0;
    }
    .symbol-options.visible {
        border-top-left-radius: 8px;
        border-top-right-radius: 0;
    }
}