/* ==========================================================================
   Faiz & Mevduat Hesaplama — Frontend CSS
   ========================================================================== */

/* --- CSS değişkenleri ---------------------------------------------------- */
:root {
    --fmh-primary:       #2563eb;
    --fmh-primary-dark:  #1d4ed8;
    --fmh-success:       #16a34a;
    --fmh-danger:        #dc2626;
    --fmh-radius:        0.75rem;
    --fmh-radius-sm:     0.375rem;
    --fmh-shadow:        0 2px 12px rgba(0,0,0,.08);
    --fmh-shadow-md:     0 4px 24px rgba(0,0,0,.12);
    --fmh-transition:    0.2s ease;
    --fmh-bg:            #ffffff;
    --fmh-bg-subtle:     #f8fafc;
    --fmh-border:        #e2e8f0;
    --fmh-text:          #1e293b;
    --fmh-text-muted:    #64748b;
    --fmh-font:          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
    .fmh-theme-auto,
    .fmh-calculator:not([class*="fmh-theme-"]) {
        --fmh-bg:         #0f172a;
        --fmh-bg-subtle:  #1e293b;
        --fmh-border:     #334155;
        --fmh-text:       #f1f5f9;
        --fmh-text-muted: #94a3b8;
    }
}

.fmh-theme-dark {
    --fmh-bg:         #0f172a;
    --fmh-bg-subtle:  #1e293b;
    --fmh-border:     #334155;
    --fmh-text:       #f1f5f9;
    --fmh-text-muted: #94a3b8;
}

/* --- Ana kapsayıcı ------------------------------------------------------- */
.fmh-calculator {
    font-family:    var(--fmh-font);
    color:          var(--fmh-text);
    background:     var(--fmh-bg);
    border:         1px solid var(--fmh-border);
    border-radius:  var(--fmh-radius);
    padding:        1.75rem;
    max-width:      680px;
    width:          100%;
    margin:         0 auto;
    box-shadow:     var(--fmh-shadow);
    box-sizing:     border-box;
    overflow:       hidden; /* taşmayı kap içinde tut */
}

.fmh-calculator *, .fmh-calculator *::before, .fmh-calculator *::after {
    box-sizing: border-box; /* inherit yerine doğrudan border-box: tema geçersiz kılmasını engeller */
}

/* Tema (Astra vb.) girdi/seçim genişlik sıfırlaması
   Birçok tema: input, select { width: 100% } uygular; kapsayıcımız içinde bunu geri alırız. */
.fmh-calculator input,
.fmh-calculator select,
.fmh-calculator textarea,
.fmh-calculator button {
    box-sizing:    border-box;
    /* Tema renk/kenarlık geçersiz kılmalarını engelle */
    border-color:  var(--fmh-border);
    outline:       none;
}
.fmh-calculator input:focus,
.fmh-calculator select:focus {
    border-color: var(--fmh-primary) !important;
    box-shadow:   0 0 0 3px color-mix(in srgb, var(--fmh-primary) 15%, transparent) !important;
    outline:      none !important;
}

/* --- Mod seçim ekranı ----------------------------------------------------- */
.fmh-selection-title {
    text-align:   center;
    font-size:    1.25rem;
    font-weight:  700;
    margin:       0 0 1.5rem;
    color:        var(--fmh-text);
}

.fmh-cards {
    display:   grid;
    grid-template-columns: 1fr 1fr;
    gap:       1rem;
}

@media (max-width: 520px) {
    .fmh-cards { grid-template-columns: 1fr; }
}

.fmh-card {
    background:    var(--fmh-bg-subtle);
    border:        2px solid var(--fmh-border);
    border-radius: var(--fmh-radius);
    padding:       1.5rem 1.25rem;
    cursor:        pointer;
    position:      relative;
    transition:    border-color var(--fmh-transition), box-shadow var(--fmh-transition), transform var(--fmh-transition);
    display:       flex;
    flex-direction:column;
    gap:           0.5rem;
    user-select:   none;
    outline:       none;
}

.fmh-card:hover,
.fmh-card:focus-visible {
    border-color: var(--fmh-primary);
    box-shadow:   0 0 0 3px color-mix(in srgb, var(--fmh-primary) 20%, transparent);
    transform:    translateY(-2px);
}

.fmh-card-icon svg {
    color: var(--fmh-primary);
}

.fmh-card-title {
    font-size:   1.05rem;
    font-weight: 700;
    margin:      0;
    color:       var(--fmh-text);
}

.fmh-card-desc {
    font-size:  0.875rem;
    color:      var(--fmh-text-muted);
    margin:     0;
    line-height:1.5;
}

.fmh-card-tag {
    font-size:   0.75rem;
    color:       var(--fmh-primary);
    font-weight: 600;
    margin-top:  auto;
}

.fmh-card-arrow {
    position:    absolute;
    right:       1rem;
    top:         50%;
    transform:   translateY(-50%);
    font-size:   1.25rem;
    color:       var(--fmh-text-muted);
    transition:  transform var(--fmh-transition), color var(--fmh-transition);
}

.fmh-card:hover .fmh-card-arrow,
.fmh-card:focus-visible .fmh-card-arrow {
    color:     var(--fmh-primary);
    transform: translateY(-50%) translateX(4px);
}

/* --- Geri butonu ---------------------------------------------------------- */
.fmh-back-btn {
    background:    none;
    border:        none;
    color:         var(--fmh-primary);
    cursor:        pointer;
    font-size:     0.875rem;
    font-weight:   600;
    padding:       0.25rem 0;
    margin-bottom: 1.25rem;
    display:       inline-flex;
    align-items:   center;
    gap:           0.25rem;
    transition:    opacity var(--fmh-transition);
    outline:       none;
}
.fmh-back-btn:hover { opacity: .75; }
.fmh-back-btn:focus-visible { outline: 2px solid var(--fmh-primary); border-radius: 2px; }

/* --- Form genel ----------------------------------------------------------- */
.fmh-form {
    width:     100%;
    max-width: 100%;
}

/* --- Form başlığı --------------------------------------------------------- */
.fmh-form-title {
    font-size:   1.15rem;
    font-weight: 700;
    margin:      0 0 1.5rem;
    color:       var(--fmh-text);
    border-bottom: 1px solid var(--fmh-border);
    padding-bottom: 0.75rem;
}

/* --- Form alanları -------------------------------------------------------- */
.fmh-field {
    margin-bottom: 1.125rem;
    width:         100%;
    max-width:     100%;
}

.fmh-field label,
.fmh-radio-group legend {
    display:      block;
    font-size:    0.875rem;
    font-weight:  600;
    color:        var(--fmh-text);
    margin-bottom:.375rem;
}

.fmh-input {
    width:         100%;
    padding:       0.6rem 0.875rem;
    border:        1.5px solid var(--fmh-border) !important;
    border-radius: var(--fmh-radius-sm);
    background:    var(--fmh-bg) !important;
    color:         var(--fmh-text) !important;
    font-size:     1rem;
    transition:    border-color var(--fmh-transition), box-shadow var(--fmh-transition);
    min-height:    44px;
    outline:       none !important;
    font-family:   inherit;
    box-shadow:    none;
    appearance:    none;
}

.fmh-input:focus {
    border-color: var(--fmh-primary) !important;
    box-shadow:   0 0 0 3px color-mix(in srgb, var(--fmh-primary) 15%, transparent) !important;
}

.fmh-input.fmh-error-state {
    border-color: var(--fmh-danger) !important;
}

.fmh-select {
    padding:       0.6rem 0.75rem;
    border:        1.5px solid var(--fmh-border) !important;
    border-radius: var(--fmh-radius-sm);
    background:    var(--fmh-bg) !important;
    color:         var(--fmh-text) !important;
    font-size:     0.9rem;
    cursor:        pointer;
    min-height:    44px;
    outline:       none !important;
    font-family:   inherit;
    transition:    border-color var(--fmh-transition);
    appearance:    none;
    box-shadow:    none;
}

.fmh-select:focus {
    border-color: var(--fmh-primary) !important;
    box-shadow:   0 0 0 3px color-mix(in srgb, var(--fmh-primary) 15%, transparent) !important;
}

/* --- Inline alanlar (input + select yan yana) ----------------------------
   TEMA GEÇERSİZ KILMA: Astra/GeneratePress gibi temalar tüm select ve input'lara
   width:100% uygular. Flex container içinde bu, select'in tüm alanı kaplamasına
   ve input'un sıfıra ezilmesine neden olur. !important ile geçersiz kılıyoruz.  */
.fmh-input-group {
    display:     flex;
    gap:         0.5rem;
    align-items: stretch;
    width:       100%;
    max-width:   100%;
    flex-wrap:   nowrap;
}

.fmh-input-group .fmh-input {
    flex:      1 1 0% !important; /* flex-basis:0 → intrinsic genişlik kullanılmaz */
    width:     0    !important;   /* minimum genişliği sıfırla, flex büyütsün */
    min-width: 0    !important;
}

/* Birim seçiciler (Günlük/Aylık/Yıllık, Gün/Ay/Yıl) */
.fmh-unit-select,
.fmh-currency-select {
    flex:      0 0 auto !important; /* büyüme/küçülme yok, doğal genişlik */
    width:     auto     !important; /* tema'nın width:100% değerini iptal et */
    min-width: 80px;
    max-width: 160px;
}

.fmh-input-suffix {
    display:       flex;
    align-items:   center;
    padding:       0 0.75rem;
    background:    var(--fmh-bg-subtle);
    border:        1.5px solid var(--fmh-border);
    border-left:   none;
    border-radius: 0 var(--fmh-radius-sm) var(--fmh-radius-sm) 0;
    color:         var(--fmh-text-muted);
    font-size:     0.9rem;
    flex:          0 0 auto;
    white-space:   nowrap;
}

/* Radyo butonlar */
.fmh-radio-group {
    border:    none;
    padding:   0;
    margin:    0;
    width:     100%;
    max-width: 100%;
}

.fmh-radio-group legend {
    margin-bottom: 0.5rem;
}

.fmh-radio-label {
    display:     inline-flex;
    align-items: center;
    gap:         0.4rem;
    cursor:      pointer;
    font-size:   0.875rem;
    padding:     0.375rem 0.75rem;
    border:      1.5px solid var(--fmh-border);
    border-radius: var(--fmh-radius-sm);
    margin-right: 0.5rem;
    margin-bottom: 0.375rem;
    transition:  border-color var(--fmh-transition), background var(--fmh-transition);
    user-select: none;
}

.fmh-radio-label:has(input:checked) {
    border-color: var(--fmh-primary);
    background:   color-mix(in srgb, var(--fmh-primary) 8%, transparent);
    color:        var(--fmh-primary);
    font-weight:  600;
}

.fmh-radio-label input[type="radio"] {
    accent-color: var(--fmh-primary);
    width:        16px  !important; /* tema width:100% geçersiz kıl */
    height:       16px  !important;
    min-width:    16px;
    flex-shrink:  0;
}

/* Hata mesajı */
.fmh-error {
    display:   block;
    font-size: 0.8rem;
    color:     var(--fmh-danger);
    margin-top: 0.25rem;
    min-height: 1.2em;
}

/* --- Butonlar ------------------------------------------------------------- */
.fmh-actions {
    display:   flex;
    gap:       0.75rem;
    margin-top: 1.25rem;
    flex-wrap: wrap;
}

.fmh-btn {
    padding:       0.65rem 1.5rem;
    border-radius: var(--fmh-radius-sm);
    font-size:     0.9375rem;
    font-weight:   600;
    cursor:        pointer;
    border:        none;
    transition:    background var(--fmh-transition), transform var(--fmh-transition);
    min-height:    44px;
    min-width:     44px;
    font-family:   inherit;
    outline:       none;
}

.fmh-btn:focus-visible {
    outline: 2px solid var(--fmh-primary);
    outline-offset: 2px;
}

.fmh-btn-primary {
    background: var(--fmh-primary);
    color:      #fff;
}

.fmh-btn-primary:hover { background: var(--fmh-primary-dark); }
.fmh-btn-primary:active { transform: scale(.98); }

.fmh-btn-secondary {
    background: var(--fmh-bg-subtle);
    color:      var(--fmh-text);
    border:     1.5px solid var(--fmh-border);
}

.fmh-btn-secondary:hover { background: var(--fmh-border); }

/* --- Sonuç kartı ---------------------------------------------------------- */
.fmh-result {
    margin-top:    1.5rem;
    overflow:      hidden;
}

.fmh-result-card {
    background:    var(--fmh-bg-subtle);
    border:        1.5px solid var(--fmh-border);
    border-radius: var(--fmh-radius);
    padding:       1.5rem;
    animation:     fmhSlideDown .3s ease forwards;
}

@keyframes fmhSlideDown {
    from { opacity: 0; transform: translateY(-12px); }
    to   { opacity: 1; transform: translateY(0);     }
}

.fmh-result-row {
    display:        flex;
    justify-content:space-between;
    align-items:    baseline;
    padding:        0.5rem 0;
    border-bottom:  1px solid var(--fmh-border);
    font-size:      0.9375rem;
    gap:            1rem;
}

.fmh-result-row:last-child { border-bottom: none; }

.fmh-result-label {
    color:       var(--fmh-text-muted);
    font-size:   0.875rem;
    white-space: nowrap;
}

.fmh-result-value {
    font-weight: 600;
    color:       var(--fmh-text);
    text-align:  right;
}

.fmh-result-row.fmh-result-highlight .fmh-result-value {
    color:     var(--fmh-success);
    font-size: 1.1rem;
}

.fmh-result-row.fmh-result-main .fmh-result-value {
    color:     var(--fmh-primary);
    font-size: 1.35rem;
    font-weight: 800;
}

.fmh-result-row.fmh-result-danger .fmh-result-value {
    color: var(--fmh-danger);
}

/* Adım adım çözüm */
.fmh-steps-toggle {
    display:     flex;
    align-items: center;
    gap:         0.4rem;
    background:  none;
    border:      none;
    color:       var(--fmh-primary);
    cursor:      pointer;
    font-size:   0.875rem;
    font-weight: 600;
    padding:     0.75rem 0 0;
    font-family: inherit;
}

.fmh-steps-content {
    background:    var(--fmh-bg);
    border:        1px solid var(--fmh-border);
    border-radius: var(--fmh-radius-sm);
    padding:       0.875rem 1rem;
    margin-top:    0.5rem;
    font-size:     0.875rem;
    line-height:   1.8;
    color:         var(--fmh-text-muted);
}

.fmh-steps-content ol { margin: 0; padding-left: 1.25rem; }
.fmh-steps-content li { margin-bottom: 0.25rem; }

/* Kopyalama ve paylaşım */
.fmh-result-actions {
    display:   flex;
    gap:       0.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.fmh-btn-copy {
    background:    transparent;
    border:        1.5px solid var(--fmh-border);
    border-radius: var(--fmh-radius-sm);
    padding:       0.4rem 0.875rem;
    font-size:     0.8125rem;
    font-weight:   600;
    cursor:        pointer;
    color:         var(--fmh-text-muted);
    transition:    border-color var(--fmh-transition), color var(--fmh-transition);
    display:       inline-flex;
    align-items:   center;
    gap:           0.35rem;
    font-family:   inherit;
    min-height:    36px;
}

.fmh-btn-copy:hover { border-color: var(--fmh-primary); color: var(--fmh-primary); }
.fmh-btn-copy.fmh-copied { color: var(--fmh-success); border-color: var(--fmh-success); }

/* Dipnot */
.fmh-disclaimer {
    margin-top:  1.25rem;
    font-size:   0.8rem;
    color:       var(--fmh-text-muted);
    border-top:  1px solid var(--fmh-border);
    padding-top: 0.75rem;
    line-height: 1.5;
}

/* --- Geçiş animasyonları -------------------------------------------------- */
.fmh-mode-panel[hidden] { display: none; }

/* --- Admin kodu bloğu ----------------------------------------------------- */
.fmh-code-block code {
    display:       block;
    background:    #f1f5f9;
    padding:       0.25rem 0.5rem;
    border-radius: 4px;
    margin:        .25rem 0;
    font-size:     .8rem;
}