/* ============================================================
   Studio Key - Brand Discovery Questionnaire
   ============================================================ */

:root {
    --bg:       #111113;
    --bg2:      #161618;
    --bg3:      #1e1e22;
    --bg4:      #2a2a30;
    --bg5:      #34343b;

    --bdr:      rgba(255, 255, 255, 0.08);
    --bdr2:     rgba(255, 255, 255, 0.14);
    --bdr-acc:  rgba(20, 203, 148, 0.30);

    /* CONTRAST FIX: t1 is primary text, t2 is secondary, t3 is tertiary.
       All now pass WCAG AA against --bg / --bg3 backgrounds. */
    --t1:       #f0ede8;
    --t2:       #b5b0a7;
    --t3:       #8a857c;

    --acc:      #14cb94;
    --acc-h:    #1de8aa;
    --acc-d:    rgba(20, 203, 148, 0.12);

    --red:      #e05252;
    --red-d:    rgba(224, 82, 82, 0.12);

    --cream:    #f0f0f0;

    --font:     'Satoshi', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --r1: 8px;
    --r2: 12px;
    --r3: 16px;
    --r4: 20px;

    --ease:     cubic-bezier(0.4, 0, 0.2, 1);
    --dur:      0.3s;
}


/* RESET */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    font-weight: 400;
    line-height: 1.6;
    color: var(--t1);
    background: var(--bg);
    min-height: 100dvh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--acc);
    color: var(--bg);
}

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--bg4); border-radius: 3px; }


/* ANIMATED BACKGROUND */

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: linear-gradient(135deg, #101014, #131318, #111416, #141218, #121115);
    background-size: 400% 400%;
    animation: gradShift 25s ease infinite;
    z-index: -1;
    pointer-events: none;
}

@keyframes gradShift {
    0%   { background-position: 0% 50%; }
    25%  { background-position: 100% 0%; }
    50%  { background-position: 100% 50%; }
    75%  { background-position: 0% 100%; }
    100% { background-position: 0% 50%; }
}


/* APP SHELL */

.app {
    max-width: 720px;
    margin: 0 auto;
    padding: 0 20px 120px;
    position: relative;
    z-index: 1;
}


/* HEADER */

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 28px 0 24px;
    border-bottom: 1px solid var(--bdr);
    margin-bottom: 32px;
}

.header__logo img {
    display: block;
    height: 32px;
    width: auto;
}

.header__right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header__label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--t2);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}


/* THEME TOGGLE */

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--bdr2);
    background: var(--bg3);
    color: var(--t2);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--dur) var(--ease);
    flex-shrink: 0;
    padding: 0;
}

.theme-toggle:hover {
    background: var(--bg4);
    color: var(--t1);
    border-color: rgba(255, 255, 255, 0.22);
}

.theme-toggle:active {
    transform: scale(0.92);
}

.theme-toggle svg {
    transition: transform 0.35s var(--ease), opacity 0.25s var(--ease);
}

.theme-toggle:hover svg {
    transform: rotate(15deg);
}


/* LIGHT MODE */

[data-theme="light"] {
    --bg:       #f5f4f1;
    --bg2:      #eeecea;
    --bg3:      #ffffff;
    --bg4:      #e8e6e2;
    --bg5:      #dddbd7;

    --bdr:      rgba(0, 0, 0, 0.08);
    --bdr2:     rgba(0, 0, 0, 0.12);
    --bdr-acc:  rgba(16, 163, 120, 0.25);

    --t1:       #1a1a1a;
    --t2:       #555250;
    --t3:       #7a7672;

    --acc:      #10a378;
    --acc-h:    #0dbd8a;
    --acc-d:    rgba(16, 163, 120, 0.10);

    --red:      #c93c3c;
    --red-d:    rgba(201, 60, 60, 0.08);

    --cream:    #1a1a1a;
}

[data-theme="light"] body::before {
    background: linear-gradient(135deg, #f5f4f1, #f0efec, #f2f1ee, #efeee9, #f3f2ef);
}

[data-theme="light"] ::selection {
    background: var(--acc);
    color: #fff;
}

[data-theme="light"] ::-webkit-scrollbar-track { background: var(--bg); }
[data-theme="light"] ::-webkit-scrollbar-thumb { background: var(--bg5); }

[data-theme="light"] .chip--selected {
    color: #fff;
}

[data-theme="light"] .btn--primary {
    color: #fff;
}

[data-theme="light"] .btn--submit {
    color: #fff;
}

[data-theme="light"] .field__textarea,
[data-theme="light"] .field__input {
    background: #ffffff;
    border-color: rgba(0, 0, 0, 0.10);
}

[data-theme="light"] .field__textarea:hover,
[data-theme="light"] .field__input:hover {
    background: #fafaf8;
    border-color: rgba(0, 0, 0, 0.18);
}

[data-theme="light"] .field__textarea:focus,
[data-theme="light"] .field__input:focus {
    background: #ffffff;
}

[data-theme="light"] .submit-area {
    background: #ffffff;
    border-color: rgba(16, 163, 120, 0.20);
}

[data-theme="light"] .save-indicator {
    background: #ffffff;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .start-screen__msg--info {
    background: rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .header__logo img {
    filter: invert(1);
}


/* PROGRESS */

.progress {
    margin-bottom: 40px;
}

.progress__bar {
    height: 3px;
    background: var(--bg4);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 12px;
}

.progress__fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--acc), var(--acc-h));
    border-radius: 2px;
    transition: width 0.5s var(--ease);
}

.progress__meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.progress__step {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--t2);
}

.progress__count {
    font-size: 0.9375rem;
    color: var(--t3);
}


/* SAVE INDICATOR */

.save-indicator {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--bg3);
    border: 1px solid var(--bdr-acc);
    border-radius: var(--r2);
    padding: 10px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
    color: var(--acc);
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
    z-index: 100;
    pointer-events: none;
}

.save-indicator .material-icons-outlined { font-size: 16px; }
.save-indicator--visible { opacity: 1; transform: translateY(0); }


/* STEPS */

.step {
    display: none;
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}

.step--active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.step--entering {
    animation: stepIn 0.45s var(--ease) forwards;
}

@keyframes stepIn {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.step__header {
    margin-bottom: 36px;
}

.step__number {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--acc);
    letter-spacing: 0.08em;
    margin-bottom: 8px;
}

.step__title {
    font-family: var(--font);
    font-size: clamp(1.75rem, 4vw, 2.4rem);
    font-weight: 500;
    color: var(--cream);
    line-height: 1.15;
    margin-bottom: 10px;
    letter-spacing: -0.01em;
}

.step__subtitle {
    font-size: 1.0625rem;
    color: var(--t2);
    line-height: 1.6;
    max-width: 560px;
}


/* FORM FIELDS */

.field-group {
    margin-bottom: 28px;
}

.field-group--compact {
    margin-bottom: 0;
}

.field__label {
    display: block;
    font-size: 1rem;
    font-weight: 500;
    color: var(--t1);
    margin-bottom: 8px;
    line-height: 1.5;
}

.field__hint {
    display: block;
    font-size: 0.9375rem;
    font-weight: 400;
    color: var(--t3);
    margin-top: 3px;
    line-height: 1.5;
}

.field__textarea,
.field__input {
    width: 100%;
    background: var(--bg3);
    border: 1px solid var(--bdr);
    border-radius: var(--r2);
    padding: 14px 16px;
    color: var(--t1);
    font-family: var(--font);
    font-size: 1rem;
    line-height: 1.6;
    outline: none;
    transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
    resize: vertical;
}

.field__input { resize: none; }

.field__textarea::placeholder,
.field__input::placeholder {
    color: var(--t3);
}

.field__textarea:hover,
.field__input:hover {
    border-color: var(--bdr2);
    background: var(--bg4);
}

.field__textarea:focus,
.field__input:focus {
    border-color: var(--acc);
    box-shadow: 0 0 0 3px var(--acc-d);
    background: var(--bg3);
}

.field__textarea--filled,
.field__input--filled {
    border-color: rgba(20, 203, 148, 0.18);
}


/* CHIP SELECTORS */

.chip-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.chip {
    display: inline-flex;
    align-items: center;
    padding: 10px 18px;
    border-radius: 100px;
    border: 1px solid var(--bdr2);
    background: var(--bg3);
    color: var(--t2);
    font-family: var(--font);
    font-size: 0.9375rem;
    font-weight: 400;
    cursor: pointer;
    transition: all var(--dur) var(--ease);
    user-select: none;
    white-space: nowrap;
}

.chip:hover {
    border-color: rgba(255, 255, 255, 0.22);
    background: var(--bg4);
    color: var(--t1);
}

.chip--selected {
    background: var(--acc);
    border-color: var(--acc);
    color: var(--bg);
    font-weight: 500;
}

.chip--selected:hover {
    background: var(--acc-h);
    border-color: var(--acc-h);
    color: var(--bg);
}

.chip--disabled {
    opacity: 0.35;
    cursor: default;
}

.chip--disabled:hover {
    border-color: var(--bdr2);
    background: var(--bg3);
    color: var(--t2);
}

@keyframes chipPop {
    0%   { transform: scale(0.92); }
    50%  { transform: scale(1.06); }
    100% { transform: scale(1); }
}

.chip--pop {
    animation: chipPop 0.25s var(--ease);
}


/* NAVIGATION */

.step__nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 44px;
    padding-top: 24px;
    border-top: 1px solid var(--bdr);
    gap: 16px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 24px;
    border-radius: var(--r1);
    font-family: var(--font);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--dur) var(--ease);
    border: none;
    text-decoration: none;
    letter-spacing: 0.01em;
}

.btn .material-icons-outlined { font-size: 18px; }

.btn--primary {
    background: var(--acc);
    color: var(--bg);
}
.btn--primary:hover {
    background: var(--acc-h);
    box-shadow: 0 4px 20px rgba(20, 203, 148, 0.2);
    transform: translateY(-1px);
}
.btn--primary:active { transform: translateY(0) scale(0.98); }

.btn--ghost {
    background: transparent;
    color: var(--t2);
    border: 1px solid var(--bdr);
}
.btn--ghost:hover {
    background: var(--bg3);
    color: var(--t1);
    border-color: var(--bdr2);
}
.btn--ghost:active { transform: scale(0.98); }

.btn--submit {
    width: 100%;
    justify-content: center;
    background: linear-gradient(135deg, var(--acc), var(--acc-h));
    color: var(--bg);
    font-weight: 600;
    padding: 16px 28px;
    border: none;
    border-radius: var(--r2);
    font-family: var(--font);
    font-size: 1.0625rem;
    cursor: pointer;
    transition: all var(--dur) var(--ease);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.btn--submit:hover {
    box-shadow: 0 4px 24px rgba(20, 203, 148, 0.25);
    transform: translateY(-1px);
}
.btn--submit:active { transform: translateY(0) scale(0.98); }
.btn--submit:disabled { opacity: 0.5; pointer-events: none; }
.btn--submit .material-icons-outlined { font-size: 20px; }


/* SUBMIT AREA */

.submit-area {
    background: var(--bg3);
    border: 1px solid var(--bdr-acc);
    border-radius: var(--r4);
    padding: 28px 24px;
    margin-top: 40px;
    margin-bottom: 8px;
}

.submit-area__header {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    margin-bottom: 24px;
}

.submit-area__header > .material-icons-outlined {
    font-size: 24px;
    color: var(--acc);
    margin-top: 2px;
    flex-shrink: 0;
}

.submit-area__title {
    font-family: var(--font);
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--cream);
    margin-bottom: 4px;
}

.submit-area__desc {
    font-size: 0.9375rem;
    color: var(--t2);
    line-height: 1.5;
}

.submit-area__fields {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.submit-area__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.submit-area__msg {
    font-size: 1rem;
    padding: 14px 16px;
    border-radius: var(--r1);
    text-align: center;
    line-height: 1.5;
}

.submit-area__msg--ok { background: var(--acc-d); color: var(--acc); }
.submit-area__msg--err { background: var(--red-d); color: var(--red); }


/* START SCREEN */

.start-screen {
    text-align: center;
    padding: 48px 0 20px;
    max-width: 480px;
    margin: 0 auto;
}

.start-screen__icon {
    margin-bottom: 20px;
}

.start-screen__icon .material-icons-outlined {
    font-size: 48px;
    color: var(--acc);
}

.start-screen__title {
    font-family: var(--font);
    font-size: clamp(1.5rem, 4vw, 2rem);
    font-weight: 500;
    color: var(--cream);
    margin-bottom: 14px;
    line-height: 1.2;
}

.start-screen__desc {
    font-size: 1.0625rem;
    color: var(--t2);
    line-height: 1.7;
    margin-bottom: 10px;
}

.start-screen__form {
    margin-top: 28px;
    text-align: left;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.start-screen__btn {
    width: 100%;
    justify-content: center;
    margin-top: 10px;
}

.start-screen__msg {
    margin-top: 12px;
    font-size: 0.9375rem;
    padding: 12px 16px;
    border-radius: var(--r1);
    text-align: center;
}

.start-screen__msg--ok { background: var(--acc-d); color: var(--acc); }
.start-screen__msg--err { background: var(--red-d); color: var(--red); }
.start-screen__msg--info { background: rgba(255,255,255,0.04); color: var(--t2); }


/* DONE SCREEN */

.done {
    text-align: center;
    padding: 80px 20px;
}

.done__icon { margin-bottom: 24px; }
.done__icon .material-icons-outlined { font-size: 56px; color: var(--acc); }

.done__title {
    font-family: var(--font);
    font-size: clamp(1.75rem, 4vw, 2.4rem);
    font-weight: 500;
    color: var(--cream);
    margin-bottom: 14px;
}

.done__text {
    font-size: 1.0625rem;
    color: var(--t2);
    line-height: 1.7;
    max-width: 480px;
    margin: 0 auto 20px;
}

.done__contact {
    font-size: 0.9375rem;
    color: var(--t3);
}

.done__contact a {
    color: var(--acc);
    text-decoration: none;
}
.done__contact a:hover { text-decoration: underline; }


/* FOCUS STATES */

.btn:focus-visible,
.chip:focus-visible,
.field__textarea:focus-visible,
.field__input:focus-visible {
    outline: 2px solid var(--acc);
    outline-offset: 2px;
}


/* RESPONSIVE - TABLET */

@media (max-width: 768px) {
    .app { padding: 0 16px 100px; }
    .header { padding: 20px 0 18px; margin-bottom: 24px; }
    .header__logo img { height: 28px; }
    .progress { margin-bottom: 32px; }
    .step__header { margin-bottom: 28px; }
    .field-group { margin-bottom: 24px; }
    .submit-area__row { grid-template-columns: 1fr; }
    .submit-area { padding: 22px 18px; }
    .step__nav { margin-top: 36px; }
    .save-indicator { bottom: 16px; right: 16px; }
}


/* RESPONSIVE - MOBILE */

@media (max-width: 480px) {
    .app { padding: 0 14px 80px; }

    .header__label {
        font-size: 0.8125rem;
        letter-spacing: 0.06em;
    }

    /* Minimum 16px for everything on mobile */
    .step__subtitle,
    .field__label,
    .field__hint,
    .field__textarea,
    .field__input,
    .chip,
    .btn,
    .progress__step,
    .progress__count,
    .submit-area__desc,
    .submit-area__msg,
    .start-screen__desc,
    .start-screen__msg,
    .done__text,
    .done__contact,
    .save-indicator {
        font-size: 1rem;
    }

    .step__number { font-size: 0.875rem; }
    .step__title { font-size: 1.5rem; }

    .chip { padding: 10px 16px; }
    .chip-grid { gap: 8px; }

    .btn { padding: 14px 20px; }

    .step__nav {
        flex-direction: column-reverse;
        gap: 10px;
    }
    .step__nav .btn {
        width: 100%;
        justify-content: center;
    }

    .submit-area__header { flex-direction: column; gap: 10px; }
    .done { padding: 60px 16px; }
    .start-screen { padding: 32px 0 16px; }
}


/* LARGE DESKTOP */

@media (min-width: 1024px) {
    .app { padding: 0 24px 140px; }
    .header { padding: 36px 0 28px; margin-bottom: 40px; }
    .progress { margin-bottom: 48px; }
}


/* PRINT */

@media print {
    body::before { display: none; }
    .save-indicator, .progress, .step__nav, .submit-area { display: none !important; }
    .step {
        display: block !important;
        opacity: 1 !important;
        transform: none !important;
        page-break-inside: avoid;
    }
}

/* UTILITY */
@keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }