.nav-short{display:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.interval-intro{max-width:78ch;margin-bottom:22px}.interval-intro p{font-size:13px;color:var(--text-muted);line-height:1.75}.interval-intro strong{font-weight:600;color:var(--accent-text)}.interval-tabs{display:flex;gap:28px;border-bottom:1px solid var(--border);margin-bottom:27px}.interval-tabs button{padding:0 0 13px;border-bottom:2px solid transparent;min-height:44px;font-size:13px;color:var(--text-muted)}.interval-tabs button.active{color:var(--accent-text);border-color:var(--accent-text);font-weight:600}.interval-learning{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:27px;align-items:start}.interval-detail{min-width:0;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:27px}.interval-detail-heading{display:flex;gap:17px;align-items:center;margin-bottom:21px}.interval-abbreviation{display:grid;place-items:center;width:64px;height:64px;flex-shrink:0;font-size:30px;font-weight:600;letter-spacing:-1px;background:var(--selected);color:var(--accent-text);border-radius:12px}.interval-detail-heading h2{font-size:24px;;font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em}.interval-detail-heading p{font-size:12px;color:var(--text-muted);margin-top:5px}.interval-description{font-size:13px;color:var(--text-muted);line-height:1.7;min-height:43px}.interval-example{margin:25px 0 22px;padding:20px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border)}.interval-example>span{display:block;font-size:11px;color:var(--text-muted);margin-bottom:7px}.interval-example strong{font-size:34px;font-weight:600;color:var(--accent-text);letter-spacing:-.7px;display:flex;gap:19px;align-items:center;flex-wrap:wrap}.interval-example strong>span{font-size:20px;color:var(--text-muted)}.interval-example strong>small{font-size:11px;letter-spacing:0;font-weight:500;color:var(--text-muted)}.interval-audio-actions{display:flex;gap:10px;flex-wrap:wrap}.interval-audio-actions .button{font-size:11px;padding:10px 13px}.interval-demonstration{margin-top:27px}.interval-demonstration>p{font-size:12px;color:var(--text-muted);margin-bottom:13px}.interval-demonstration strong{color:var(--accent-text);font-weight:600}.interval-strip-scroll{overflow-x:auto;scrollbar-width:thin;scrollbar-color:var(--border-control) var(--navigation);padding-bottom:10px}.interval-strip{--cols:16;display:grid;grid-template-columns:repeat(var(--cols),46px);grid-template-rows:25px 68px;position:relative;isolation:isolate;width:max-content;min-width:100%}.interval-string-line{position:absolute;top:58px;height:2px;background:var(--border-control);left:0;right:0;z-index:-1}.interval-fret-number{text-align:center;font-size:9px;color:var(--text-muted)}.interval-position{position:relative;border-right:2px solid var(--border-control);background:var(--elevated);width:46px;height:68px;display:grid;place-items:center}.interval-position:disabled{opacity:1}.interval-position>span{width:31px;height:31px;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:600;background:transparent}.interval-position:first-of-type{border-right:4px solid var(--border-control)}.interval-position.interval-root>span{background:var(--warning);color:var(--warning-text);box-shadow:0 0 0 4px var(--surface)}.interval-position.interval-target>span{background:var(--accent);color:var(--text);box-shadow:0 0 0 4px var(--selected)}.interval-position.interval-wrong>span{background:var(--error-surface);color:var(--error)}.interval-position:not(:disabled):hover>span{background:var(--selected);color:var(--accent-text)}.interval-position:not(:disabled):hover>span:empty::after{content:'?';font-size:16px}.interval-strip-legend{display:flex;gap:15px;align-items:center;font-size:9px;color:var(--text-muted);margin-top:6px;flex-wrap:wrap}.interval-strip-legend>span{display:flex;gap:6px;align-items:center}.interval-strip-legend>span:last-child{margin-left:auto}.root-dot,.target-dot{width:6px;height:6px;display:inline-block;border-radius:50%;background:var(--warning)}.target-dot{background:var(--accent)}.interval-notation-note{font-size:10px;color:var(--text-muted);line-height:1.8;margin-top:27px;border-top:1px solid var(--border);padding-top:17px}.interval-reference{min-width:0}.interval-reference h2{font-size:16px;margin:3px 0 17px;font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em}.interval-table{border-collapse:collapse;width:100%;text-align:left}.interval-table thead{font-size:9px;color:var(--text-muted);border-bottom:1px solid var(--border)}.interval-table thead th{font-weight:500;padding:0 5px 10px}.interval-table thead th:first-child{padding-left:11px}.interval-table tbody tr{border-bottom:1px solid var(--border)}.interval-table tbody tr.selected{background:var(--selected)}.interval-table tbody th{font-weight:500}.interval-table tbody th button{width:100%;display:flex;align-items:center;gap:10px;justify-content:space-between;text-align:left;padding:13px 10px;min-height:44px;font-size:12px}.interval-table tbody th button:hover{color:var(--accent-text);background:var(--selected)}.interval-table tbody th small{font-size:9px;color:var(--text-muted);min-width:20px;text-align:right}.interval-table td{font-size:11px;color:var(--accent-text);text-align:center;padding:0 3px}.interval-table td .icon-button{width:30px;height:30px}.interval-table td svg{width:15px;height:15px}.interval-reference .selected button{font-weight:600;color:var(--accent-text)}.interval-exercise-modes{display:flex;padding:0 27px 18px;gap:9px}.interval-exercise-modes button{border:1px solid var(--border);border-radius:7px;padding:10px 18px;font-size:12px;min-height:42px}.interval-exercise-modes button.active{background:var(--accent);color:var(--text);border-color:var(--accent-text);font-weight:600}.interval-setup{border-top:1px solid var(--border);padding:17px 27px}.interval-setup summary{font-size:12px;cursor:pointer;color:var(--accent-text);min-height:27px}.interval-setup summary>span{color:var(--text-muted)}.interval-presets{display:flex;gap:9px;flex-wrap:wrap;margin:13px 0}.interval-presets button{font-size:11px;background:var(--selected);padding:8px 12px;min-height:35px;border-radius:6px;color:var(--accent-text)}.interval-presets button:hover{background:var(--selected)}.interval-checks{display:grid;grid-template-columns:repeat(3,1fr);gap:5px 15px;margin-bottom:15px}.interval-checks label{display:flex;align-items:center;gap:8px;min-height:38px;font-size:11px;color:var(--text-muted)}.interval-checks input{flex-shrink:0}.interval-checks label>span{display:flex;flex-wrap:wrap;gap:5px;align-items:center}.interval-checks small{font-size:9px;color:var(--text-muted)}.interval-selection-help{font-size:11px;color:var(--text-muted);margin:13px 0}.interval-setup .button{font-size:12px;margin-bottom:6px}.interval-setup .form-error{margin:10px 0 0}.interval-ready{padding:32px 27px;text-align:center;border-top:1px solid var(--border);background:var(--navigation)}.interval-ready svg{width:32px;height:32px;color:var(--accent-text);margin-bottom:12px}.interval-ready p{max-width:58ch;margin:0 auto;color:var(--text-muted);font-size:13px}.interval-question{padding:23px 27px 0;border-top:1px solid var(--border)}.interval-question-top{display:flex;justify-content:space-between;gap:15px;font-size:10px;color:var(--text-muted);margin-bottom:16px}.interval-question h3{font-size:25px;margin-bottom:9px;font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em}.interval-question>p{font-size:13px;color:var(--text-muted);margin-bottom:17px;max-width:70ch}.interval-question>.button{font-size:12px;margin-bottom:20px}.interval-exercise-board{margin:10px 0 23px}.interval-answer-options{display:grid;grid-template-columns:repeat(4,1fr);gap:9px;margin:3px 0 23px}.interval-answer-option{border:1px solid var(--border);border-radius:7px;display:flex;align-items:center;gap:12px;min-height:59px;text-align:left;padding:11px 13px}.interval-answer-option:hover{background:var(--selected)}.interval-answer-option strong{font-size:23px;font-weight:600;color:var(--accent-text);min-width:32px}.interval-answer-option span{font-size:11px;color:var(--text-muted);line-height:1.4}.interval-answer-option.correct{background:var(--accent);border-color:var(--accent-text)}.interval-answer-option.correct strong,.interval-answer-option.correct span{color:var(--text)}.interval-answer-option.wrong{background:var(--error-surface);border-color:var(--error-border)}.interval-answer-option:disabled{opacity:1}.interval-feedback-row{border-top:1px solid var(--border);padding:17px 0;display:flex;justify-content:space-between;align-items:center;gap:20px;min-height:77px}.interval-feedback-row .button{font-size:11px;white-space:nowrap}.interval-progress{margin-top:30px;padding:24px 0 0;border-top:1px solid var(--border)}.interval-progress h2{font-size:19px;;font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em}.interval-progress>p{font-size:13px;color:var(--text-muted)}.interval-progress>p>strong{font-weight:600;color:var(--accent-text)}.interval-history{margin:17px 0 10px}.interval-history>div{display:flex;justify-content:space-between;align-items:center;padding:13px 0;border-bottom:1px solid var(--border);font-size:12px}.interval-history small{display:block;font-size:10px;color:var(--text-muted);margin-top:3px}.interval-history strong{color:var(--accent-text);font-size:17px;font-weight:600}
@media(max-width:1300px){.interval-learning{grid-template-columns:minmax(0,1fr) 280px;gap:20px}.interval-detail{padding:23px}.interval-detail-heading{gap:13px}.interval-detail-heading h2{font-size:20px;font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em}.interval-abbreviation{width:54px;height:54px;font-size:27px}.interval-table tbody th button{font-size:11px}.interval-reference h2{font-size:14px;font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em}.interval-answer-options{grid-template-columns:repeat(3,1fr)}}
@media(max-width:1050px){.interval-learning{grid-template-columns:1fr}.interval-reference{margin-top:6px}.interval-reference h2{font-size:18px;font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em}.interval-table tbody th button{font-size:13px}.interval-table tbody th small{margin-right:30px}.interval-table tbody th{width:75%}.interval-table td{font-size:13px}.interval-table td .icon-button{width:38px;height:38px}.interval-detail-heading h2{font-size:24px;font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em}.interval-abbreviation{width:64px;height:64px;font-size:31px}.interval-checks{grid-template-columns:repeat(2,1fr)}}
@media(max-width:700px){.nav-full{display:none}.nav-short{display:inline}.sidebar nav{padding:0 8px}.nav-link{font-size:10px;gap:5px}.nav-link svg{width:14px;height:14px}.interval-intro{margin-bottom:16px}.interval-intro p{font-size:12px}.interval-tabs{gap:22px;margin-bottom:20px}.interval-tabs button{font-size:11px;padding-bottom:11px}.interval-detail{padding:20px 17px}.interval-detail-heading h2{font-size:23px;font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em}.interval-detail-heading{margin-bottom:17px}.interval-abbreviation{font-size:28px;width:57px;height:57px}.interval-detail-heading p{font-size:11px}.interval-description{font-size:12px}.interval-example{margin:20px 0 18px;padding:17px 0}.interval-example strong{font-size:31px}.interval-audio-actions{gap:8px}.interval-audio-actions .button{font-size:10px;padding:10px 12px}.interval-demonstration{margin-top:22px}.interval-demonstration>p{font-size:11px}.interval-strip-legend{font-size:8px;gap:11px}.interval-strip-legend>span:last-child{margin-left:0}.interval-notation-note{font-size:10px;margin-top:21px}.interval-reference h2{font-size:16px;font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em}.interval-table tbody th{width:72%}.interval-table tbody th button{font-size:12px;padding:12px 9px}.interval-table tbody th small{margin-right:13px}.interval-table td{font-size:12px}.interval-exercise-modes{padding:0 17px 16px}.interval-exercise-modes button{font-size:11px;padding:9px 14px}.interval-setup{padding:16px 17px}.interval-setup summary{font-size:11px}.interval-checks{gap:6px 12px;grid-template-columns:1fr 1fr}.interval-checks label{font-size:10px;gap:6px}.interval-checks small{font-size:8px}.interval-presets{gap:6px}.interval-presets button{font-size:10px;padding:8px 10px}.interval-selection-help{font-size:10px}.interval-setup .button{font-size:11px;width:100%}.interval-ready{padding:27px 18px}.interval-ready p{font-size:12px}.interval-question{padding:20px 17px 0}.interval-question-top{font-size:9px}.interval-question h3{font-size:22px;font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em}.interval-question>p{font-size:12px}.interval-question>.button{font-size:11px}.interval-answer-options{grid-template-columns:repeat(2,1fr);gap:7px}.interval-answer-option{padding:10px;gap:7px;min-height:61px}.interval-answer-option strong{font-size:24px;min-width:32px}.interval-answer-option span{font-size:10px}.interval-feedback-row{flex-direction:column;gap:12px;align-items:flex-start}.interval-feedback-row>.button,.interval-feedback-row>.text-button{align-self:flex-end}.interval-progress h2{font-size:17px;font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em}.interval-progress .section-title .text-button{font-size:10px}.interval-progress>p{font-size:12px}}

/* Les mêmes couleurs et voix typographiques que le reste de Riff Club. */
.interval-abbreviation{font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em;font-size:36px}
.interval-detail-heading h2{font-size:30px}
.interval-example strong{font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em;font-size:42px}
.interval-position.interval-root>span{background:var(--warning);color:var(--canvas);box-shadow:none}
.interval-position.interval-target>span{background:var(--accent);color:var(--text);box-shadow:none}
.interval-position.interval-wrong>span{background:var(--error-surface);color:var(--error)}
.interval-position{background:var(--navigation)}
.interval-strip-scroll{scrollbar-color:var(--border-control) var(--canvas)}
.interval-string-line{background:var(--border-control)}
.interval-reference h2{font-size:23px}
.interval-answer-option{border-color:var(--border-control);border-radius:6px}
.interval-answer-option strong{font-family:'Barlow Condensed',sans-serif;font-weight:800;letter-spacing:.005em;font-size:28px}
.interval-answer-option.correct{background:var(--success);border-color:var(--success)}
.interval-answer-option.correct strong,.interval-answer-option.correct span{color:var(--canvas)}
.interval-answer-option.wrong{background:var(--error-surface);border-color:var(--error-border)}
.interval-exercise-modes button{border-color:var(--border-control);border-radius:6px}
.interval-exercise-modes button.active{background:var(--accent);border-color:var(--accent);color:var(--text)}
.interval-checks label{color:var(--text)}
.interval-question h3{font-size:30px}
.interval-progress h2{font-size:26px}
@media(max-width:700px){.interval-detail-heading h2{font-size:28px}.interval-question h3{font-size:27px}.interval-reference h2{font-size:23px}.interval-progress h2{font-size:24px}}