/* calc/assets/css/calculators/bpm_key_detector.css */

:root {
    --bg-studio-card: #0F172A; /* Slate 900 */
    --text-studio-main: #F8FAFC; /* Slate 50 */
    --text-studio-muted: #94A3B8; /* Slate 400 */
    
    /* Accents */
    --accent-cyan: #06B6D4; /* Cyan 500 */
    --accent-cyan-hover: #0891B2; /* Cyan 600 */
    --accent-cyan-glow: rgba(6, 182, 212, 0.25);
    
    --accent-magenta: #D946EF; /* Fuchsia 500 */
    --accent-magenta-glow: rgba(217, 70, 239, 0.25);
    
    --border-studio: #1E293B; /* Slate 800 */
}

.calc-header { margin-bottom: 32px; }
.subtitle { color: var(--text-secondary); margin-top: 8px; }

/* ЖЕСТКАЯ СЕТКА С МОБИЛЬНОЙ АДАПТАЦИЕЙ ИЗ КОРОБКИ */
.calc-grid { 
    display: flex !important; flex-direction: column !important; gap: 24px !important; 
    width: 100%; box-sizing: border-box; 
}
@media (min-width: 900px) { 
    .calc-grid { display: grid !important; grid-template-columns: 1fr 1fr !important; align-items: start; } 
}

.calc-inputs, .calc-results { 
    min-width: 0 !important; max-width: 100% !important; box-sizing: border-box !important; overflow: hidden !important; 
}

.group-title { font-size: 14px; font-weight: 800; color: #171717; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 0.05em; border-bottom: 2px solid #E2E8F0; padding-bottom: 8px;}
.hidden { display: none !important; }

/* DROPZONE СТИЛИ */
.dropzone-area {
    border: 2px dashed #CBD5E1; border-radius: 16px; background: #F8FAFC;
    padding: 32px 20px; text-align: center; cursor: pointer;
    transition: all 0.3s ease; margin-top: 8px; position: relative; overflow: hidden;
}
.dropzone-area:hover, .dropzone-area.drag-over {
    border-color: var(--accent-cyan); background: #ECFEFF;
}
.dropzone-content { display: flex; flex-direction: column; align-items: center; gap: 12px; pointer-events: none; transition: opacity 0.2s;}
.dropzone-content.hidden { opacity: 0; pointer-events: none; position: absolute;}

.cyan-icon-wrap {
    display: flex; align-items: center; justify-content: center; width: 64px; height: 64px;
    border-radius: 20px; background: #FFF; box-shadow: 0 8px 20px rgba(0,0,0,0.05); color: var(--accent-cyan);
    transition: transform 0.3s;
}
.dropzone-area:hover .cyan-icon-wrap { transform: translateY(-5px); box-shadow: 0 12px 25px var(--accent-cyan-glow);}
.drop-title { font-size: 16px; font-weight: 700; color: #1E293B; }
.drop-desc { font-size: 13px; color: #64748B; }

/* ВЫБРАННЫЙ ФАЙЛ */
.selected-file-info {
    display: flex; align-items: center; background: #FFFFFF; border: 1px solid #E2E8F0;
    border-radius: 12px; padding: 16px; gap: 12px; box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    cursor: default; z-index: 10; position: relative;
}
.s-file-icon {
    display: flex; align-items: center; justify-content: center; width: 40px; height: 40px;
    background: #ECFEFF; color: var(--accent-cyan); border-radius: 10px; flex-shrink: 0;
}
.s-file-details { flex: 1; display: flex; flex-direction: column; align-items: flex-start; overflow: hidden; }
.s-file-name { font-size: 14px; font-weight: 700; color: #0F172A; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; width: 100%; text-align: left;}
.s-file-size { font-size: 12px; font-weight: 600; color: #64748B; }

.s-file-remove {
    background: #F1F5F9; border: none; color: #64748B; width: 32px; height: 32px; border-radius: 8px;
    display: flex; align-items: center; justify-content: center; cursor: pointer; transition: all 0.2s;
}
.s-file-remove:hover { background: #FEE2E2; color: #EF4444; }


.action-btn {
    display: flex; align-items: center; justify-content: center; gap: 10px;
    padding: 16px 28px; font-size: 15px; font-weight: 700; border-radius: 12px; border: none; cursor: pointer;
    transition: all 0.3s ease;
}
.cyan-btn { background: var(--accent-cyan); color: #FFF; box-shadow: 0 8px 20px var(--accent-cyan-glow); }
.cyan-btn:hover:not(.disabled) { background: var(--accent-cyan-hover); transform: translateY(-2px); box-shadow: 0 12px 25px rgba(6, 182, 212, 0.4); }
.cyan-btn.disabled { background: #E2E8F0; color: #94A3B8; box-shadow: none; cursor: not-allowed; transform: none;}

/* Info Alert */
.studio-alert {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 16px; border-radius: 12px; font-size: 13px; line-height: 1.5; 
    background: #F8FAFC; border: 1px solid #E2E8F0; color: #475569;
}
.studio-alert svg { flex-shrink: 0; margin-top: -2px; color: #06B6D4;}

/* ========================================================
   ПРАВАЯ КАРТОЧКА (STUDIO DARK - ИЗОЛИРОВАННАЯ)
   ======================================================== */
#result-card.card--studio-dark { 
    background: var(--bg-studio-card) !important; 
    color: var(--text-studio-main) !important; 
    border: 1px solid var(--border-studio) !important; 
    border-radius: 24px !important;
    box-shadow: 0 24px 48px -12px rgba(0,0,0,0.8) !important;
    overflow: hidden !important; 
    padding: 32px 0 0 0 !important; 
    display: flex !important; 
    flex-direction: column !important;
    min-width: 0 !important; 
    max-width: 100% !important; 
    box-sizing: border-box !important;
    isolation: isolate !important; 
    -webkit-mask-image: -webkit-radial-gradient(white, black) !important; 
    transform: translateZ(0) !important; 
}
#result-card.card--studio-dark::before, 
#result-card.card--studio-dark::after { display: none !important; }

.cyan-title { 
    color: var(--accent-cyan); margin: 0 24px 16px; 
    font-size: 12px; text-align: center; 
    font-weight: 800; letter-spacing: 0.15em; text-transform: uppercase;
}

.empty-state {
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    padding: 60px 24px; color: var(--text-studio-muted); text-align: center;
    font-size: 14px; font-weight: 500; flex: 1; gap: 16px;
}

.audio-waves-icon svg { color: #334155; }

/* БЛОК ПРОЦЕССА */
.processing-box { padding: 40px 24px; display: flex; flex-direction: column; align-items: center; justify-content: center; flex: 1;}
.processing-status { font-size: 14px; font-weight: 700; color: #FFF; margin-bottom: 16px; text-align: center;}
.progress-bar-bg { width: 100%; height: 8px; background: var(--border-studio); border-radius: 99px; overflow: hidden; margin-bottom: 12px;}
.progress-bar-fill { height: 100%; background: linear-gradient(90deg, var(--accent-cyan), var(--accent-magenta)); width: 0%; transition: width 0.2s linear;}
.processing-hint { font-size: 12px; color: var(--text-studio-muted); text-align: center;}


/* РЕЗУЛЬТАТ */
.result-display { 
    display: flex; flex-direction: column;
    padding: 24px; gap: 24px; border-top: 1px solid var(--border-studio); margin-top: auto;
}

.metrics-grid {
    display: grid; grid-template-columns: 1fr 1fr; gap: 16px;
}
.metric-box {
    background: #09090B; border: 1px solid var(--border-studio); border-radius: 16px;
    padding: 24px 16px; display: flex; flex-direction: column; align-items: center; gap: 8px;
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.3); text-align: center;
}
.metric-label { font-size: 12px; font-weight: 800; color: var(--text-studio-muted); text-transform: uppercase; letter-spacing: 0.05em;}
.metric-value { font-size: 36px; font-weight: 900; line-height: 1;}
.cyan-glow { color: var(--accent-cyan); text-shadow: 0 0 20px var(--accent-cyan-glow); }
.magenta-glow { color: var(--accent-magenta); text-shadow: 0 0 20px var(--accent-magenta-glow); }

.camelot-box {
    display: flex; align-items: center; justify-content: space-between;
    background: #1E293B; border-radius: 12px; padding: 16px 20px;
}
.camelot-label { font-size: 14px; font-weight: 700; color: #FFF; }
.camelot-val { font-size: 16px; font-weight: 900; color: var(--text-studio-main); background: #334155; padding: 4px 12px; border-radius: 8px;}

.secondary-action-btn {
    background: transparent; color: var(--text-studio-muted); border: 1px solid var(--border-studio);
    font-size: 14px; font-weight: 700; cursor: pointer; border-radius: 12px;
    transition: all 0.2s; padding: 12px;
}
.secondary-action-btn:hover { color: #FFF; background: #1E293B; }


/* SEO ИНФОБЛОКИ И ТАБЛИЦЫ */
.info-wrapper { padding: 60px 0; margin-top: 60px; border-top: 1px solid rgba(0,0,0,0.06); margin-bottom: 20px; }
.icon-heading { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 24px; font-size: 24px; font-weight: 800; color: var(--text-primary); line-height: 1.3; }
.header-icon { display: flex; align-items: center; justify-content: center; width: 48px; height: 48px; border-radius: 14px; background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,0.04); flex-shrink: 0; margin-top: -4px; }
.header-icon svg { width: 24px; height: 24px; stroke-width: 2px; }
.cyan-icon svg { color: var(--accent-cyan); }
.slate-icon svg { color: #64748B; }
.intro-text { font-size: 16px; color: var(--text-secondary); margin-bottom: 32px; line-height: 1.6; }

.formulas-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-bottom: 48px; width: 100%; box-sizing: border-box;}
.formula-card { background: #fff; border: 1px solid rgba(0,0,0,0.04); box-shadow: 0 4px 20px rgba(0,0,0,0.03); border-radius: 24px; padding: 24px; display: flex; flex-direction: column; min-width: 0; max-width: 100%; box-sizing: border-box;}
.formula-header { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; margin-bottom: 16px; }
.formula-card h3 { margin: 0; font-size: 18px; font-weight: 700; color: var(--text-primary); line-height: 1.3; }
.badge-cyan { background: #ECFEFF; color: #0891B2; padding: 6px 12px; border-radius: 99px; font-size: 11px; font-weight: 800; text-transform: uppercase; }
.badge-magenta { background: #FDF4FF; color: #C026D3; padding: 6px 12px; border-radius: 99px; font-size: 11px; font-weight: 800; text-transform: uppercase; }
.formula-card p { font-size: 14px; color: var(--text-secondary); margin: 0; line-height: 1.5; font-weight: 500; }
.soft-divider { border: none; height: 1px; background: linear-gradient(90deg, transparent, #E2E8F0, transparent); margin: 48px 0; }


/* FAQ */
.faq-section .faq-item { background: #fff; border: 1px solid #E2E8F0; border-radius: 12px; margin-bottom: 12px; overflow: hidden; transition: all 0.2s ease; }
.faq-section .faq-item[open] { border-color: var(--accent-cyan); box-shadow: 0 4px 15px rgba(0,0,0,0.05); }
summary.faq-question { padding: 16px 20px; cursor: pointer; font-weight: 600; color: var(--text-primary); list-style: none; display: flex; justify-content: space-between; align-items: center; transition: background 0.2s; }
summary.faq-question:hover { background-color: #F8FAFC; }
.faq-section .faq-item[open] summary.faq-question { color: #0891B2; background: #ECFEFF; }
.faq-question::after { content: '+'; font-size: 20px; color: var(--text-secondary); font-weight: 400; line-height: 1; }
.faq-question .icon-plus { display: none; }
.faq-section .faq-item[open] summary.faq-question::after { content: '−'; color: #0891B2; }
.faq-answer, .faq-item div[itemprop="text"] { padding: 20px; color: var(--text-secondary); line-height: 1.6; font-size: 15px; }


/* ========================================================
   ДОПОЛНИТЕЛЬНАЯ МОБИЛЬНАЯ АДАПТАЦИЯ
   ======================================================== */
@media (max-width: 900px) {
    .formulas-grid { grid-template-columns: 1fr !important; gap: 16px !important; margin-bottom: 32px !important; }
    
    #result-card.card--studio-dark { border-radius: 16px !important; padding: 20px 0 0 0 !important; margin-top: 16px !important;}
    
    .metrics-grid { gap: 12px !important; }
    .metric-box { padding: 16px !important; }
    .metric-value { font-size: 28px !important; }
    
    .camelot-box { flex-direction: column !important; gap: 12px !important; align-items: flex-start !important;}
}