/* ============================================================
   Sky Flight Request — form.css
   Redesigned to match the ÆTHER business-class.html aesthetic:
   dark ink bg · gold accents · Cormorant/DM Mono/Instrument Sans
   sharp rectangular edges · gold hairline borders · luxury feel
   ============================================================ */

.sfr-wrapper {
    --sfr-ink:        #0a0a08;
    --sfr-smoke:      #131310;
    --sfr-ash:        #1a1a17;
    --sfr-gold:       #c9a84c;
    --sfr-gold-light: #e2c97a;
    --sfr-gold-dim:   rgba(201,168,76,0.12);
    --sfr-gold-line:  rgba(201,168,76,0.18);
    --sfr-dust:       #6b6b5e;
    --sfr-mist:       #9a9a8e;
    --sfr-paper:      #f0ebe0;
    --sfr-green:      #10b981;
    --sfr-green-dark: #059669;
    --sfr-error:      #ef4444;
    --sfr-serif:      'Cormorant Garamond', Georgia, serif;
    --sfr-sans:       'Instrument Sans', 'Helvetica Neue', sans-serif;
    --sfr-mono:       'DM Mono', 'Courier New', monospace;
    --sfr-t:          .2s ease;
}

/* -- Wrapper -- */
.sfr-wrapper {
    font-family: var(--sfr-sans);
    color: var(--sfr-paper);
    padding: 0;
}

/* -- Card -- */
.sfr-card {
    background: var(--sfr-smoke);
    border: 1px solid var(--sfr-gold-line);
    border-radius: 0;
    box-shadow: 0 16px 64px rgba(0,0,0,0.6);
    padding: 32px 36px 36px;
    max-width: 860px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

/* Gold top rule */
.sfr-card::before {
    content: '';
    position: absolute;
    inset: 0 0 auto 0;
    height: 2px;
    background: linear-gradient(90deg, var(--sfr-gold) 0%, rgba(201,168,76,0.15) 100%);
}

/* -- Trip tabs — flush rectangular strip -- */
.sfr-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 28px;
    border: 1px solid var(--sfr-gold-line);
    overflow: hidden;
}

.sfr-tab {
    flex: 1;
    background: transparent;
    border: none;
    border-right: 1px solid var(--sfr-gold-line);
    color: var(--sfr-mist);
    cursor: pointer;
    font-family: var(--sfr-mono);
    font-size: 0.6rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    padding: 0.85rem 1rem;
    text-align: center;
    transition: color var(--sfr-t), background var(--sfr-t);
    white-space: nowrap;
}

.sfr-tab:last-child { border-right: none; }

.sfr-tab:hover {
    color: var(--sfr-gold);
    background: var(--sfr-gold-dim);
}

.sfr-tab--active,
.sfr-tab[aria-selected="true"] {
    background: var(--sfr-gold);
    color: var(--sfr-ink);
}

/* -- Form -- */
.sfr-form {
    display: flex;
    flex-direction: column;
    gap: 1px;                         /* hairline between rows, bg shows through */
    background: var(--sfr-gold-line);
    margin-bottom: 16px;
}

/* -- Rows -- */
.sfr-row {
    display: grid;
    gap: 1px;
    align-items: stretch;
    position: relative;
    background: var(--sfr-gold-line);
}

.sfr-row--2 { grid-template-columns: 1fr 1fr; }
.sfr-row--3 { grid-template-columns: 1fr 1fr 1fr; }

/* -- Field -- */
.sfr-field {
    display: flex;
    flex-direction: column;
    background: var(--sfr-smoke);
    padding: 12px 16px 14px;
    gap: 4px;
}

.sfr-field label {
    font-family: var(--sfr-mono);
    font-size: 0.5rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--sfr-gold);
    line-height: 1;
}

/* -- Input wrap -- */
.sfr-input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.sfr-icon {
    position: absolute;
    left: 0;
    width: 14px;
    height: 14px;
    color: var(--sfr-dust);
    pointer-events: none;
    flex-shrink: 0;
}

.sfr-input-wrap input,
.sfr-input-wrap select {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(201,168,76,0.1);
    color: var(--sfr-paper);
    font-family: var(--sfr-serif);
    font-size: 1rem;
    font-weight: 300;
    padding: 6px 0 6px 22px;
    transition: border-color var(--sfr-t);
    outline: none;
    box-sizing: border-box;
    -webkit-appearance: none;
    appearance: none;
}

.sfr-input-wrap input::placeholder {
    color: var(--sfr-dust);
    font-family: var(--sfr-serif);
    font-style: italic;
}

.sfr-input-wrap input:focus,
.sfr-input-wrap select:focus {
    border-bottom-color: var(--sfr-gold);
}

.sfr-input-wrap input[type="date"]:not(:valid) {
    color: var(--sfr-dust);
}

.sfr-input-wrap input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(0.4) sepia(1) saturate(0.4);
    opacity: 0.45;
    cursor: pointer;
}

.sfr-input-wrap select option {
    background: var(--sfr-ash);
    color: var(--sfr-paper);
}

/* Select chevron */
.sfr-input-wrap--select .sfr-chevron {
    position: absolute;
    right: 0;
    width: 14px;
    height: 14px;
    color: var(--sfr-dust);
    pointer-events: none;
}

/* -- Swap button -- */
.sfr-swap-btn {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    width: 26px;
    height: 26px;
    background: var(--sfr-smoke);
    border: 1px solid var(--sfr-gold-line);
    border-radius: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color var(--sfr-t), background var(--sfr-t);
}

.sfr-swap-btn:hover {
    border-color: var(--sfr-gold);
    background: var(--sfr-gold-dim);
}

.sfr-swap-btn svg {
    width: 12px;
    height: 12px;
    color: var(--sfr-mist);
}

/* -- Divider — "Your Contact Details" -- */
.sfr-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--sfr-smoke);           /* pull out of grid */
    padding: 14px 0 2px;
    color: var(--sfr-dust);
    font-family: var(--sfr-mono);
    font-size: 0.5rem;
    letter-spacing: 0.24em;
    text-transform: uppercase;
}

.sfr-divider::before,
.sfr-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--sfr-gold-line);
}

/* The divider lives inside .sfr-form which has bg=gold-line gap system,
   so we need to wrap it correctly */
.sfr-form > .sfr-divider {
    background: var(--sfr-smoke);
    margin: 0;
    padding: 18px 0 4px;
}

/* -- Return field hidden for one-way -- */
.sfr-return-field.sfr-hidden {
    visibility: hidden;
    pointer-events: none;
}

/* -- Error message -- */
.sfr-message {
    font-family: var(--sfr-mono);
    font-size: 0.56rem;
    letter-spacing: 0.1em;
    min-height: 0;
    padding: 0;
    transition: all var(--sfr-t);
}

.sfr-message.sfr-message--error {
    background: rgba(239,68,68,0.06);
    border-left: 2px solid rgba(239,68,68,0.45);
    color: #fca5a5;
    padding: 10px 14px;
    margin-top: 4px;
}

/* -- Submit — rectangular, mono, gold-on-green -- */
.sfr-submit {
    background: var(--sfr-green);
    border: none;
    border-radius: 0;
    color: #fff;
    cursor: pointer;
    font-family: var(--sfr-mono);
    font-size: 0.65rem;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    padding: 1.15rem 2rem;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.65rem;
    margin-top: 20px;
    transition: background var(--sfr-t), transform var(--sfr-t), box-shadow var(--sfr-t);
}

.sfr-submit:hover:not(:disabled) {
    background: var(--sfr-green-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(16,185,129,0.22);
}

.sfr-submit:active:not(:disabled) {
    transform: none;
}

.sfr-submit:disabled {
    opacity: .55;
    cursor: not-allowed;
    transform: none;
}

.sfr-plane-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    fill: #fff;
}

.sfr-submit-loading { display: none; }
.sfr-submit.sfr-loading .sfr-submit-label { display: none; }
.sfr-submit.sfr-loading .sfr-submit-loading {
    display: inline;
    font-family: var(--sfr-mono);
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
}

/* -- Success overlay -- */
.sfr-success {
    position: absolute;
    inset: 0;
    background: var(--sfr-smoke);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 48px;
    opacity: 0;
    pointer-events: none;
    transition: opacity .5s ease;
    z-index: 10;
}

.sfr-success.sfr-success--visible {
    opacity: 1;
    pointer-events: all;
}

.sfr-success__inner { max-width: 380px; }

.sfr-success__check {
    width: 60px;
    height: 60px;
    margin-bottom: 1.6rem;
}

.sfr-success__check circle {
    stroke: var(--sfr-gold);
    stroke-width: 1.5;
    stroke-dasharray: 166;
    stroke-dashoffset: 166;
    fill: none;
    animation: sfr-circle .7s ease forwards;
}

.sfr-success__check path {
    stroke: var(--sfr-gold);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-dasharray: 48;
    stroke-dashoffset: 48;
    animation: sfr-tick .4s .65s ease forwards;
}

@keyframes sfr-circle { to { stroke-dashoffset: 0; } }
@keyframes sfr-tick   { to { stroke-dashoffset: 0; } }

.sfr-success h3 {
    font-family: var(--sfr-serif);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    font-weight: 300;
    letter-spacing: -0.01em;
    color: var(--sfr-gold);
    margin: 0 0 0.8rem;
}

.sfr-success p {
    font-family: var(--sfr-sans);
    color: var(--sfr-mist);
    font-size: 0.88rem;
    line-height: 1.75;
    margin: 0;
}

/* -- Responsive -- */
@media (max-width: 680px) {
    .sfr-card { padding: 24px 18px 28px; }

    .sfr-row--2,
    .sfr-row--3 { grid-template-columns: 1fr; }

    .sfr-swap-btn { display: none; }

    .sfr-tabs { overflow-x: auto; }
    .sfr-tab  { flex: none; padding: 0.8rem 1rem; }
}

@media (max-width: 400px) {
    .sfr-tab { font-size: 0.54rem; padding: 0.75rem 0.8rem; letter-spacing: 0.12em; }
    .sfr-card { padding: 20px 14px 24px; }
}