/* COMMS STACK - AI-FIRST COMMUNICATOR COURSE */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Open Sans",sans-serif;background:#F8FAFC;color:#1E293B;line-height:1.7;font-size:16px}
h1,h2,h3,h4{font-family:"Poppins",sans-serif;line-height:1.25}
a{color:#1E40AF;text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;display:block}
.container{max-width:900px;margin:0 auto;padding:0 24px}
.btn{display:inline-block;font-family:"Poppins",sans-serif;font-weight:600;border-radius:8px;border:none;cursor:pointer;transition:all .2s;text-decoration:none}
.btn-primary{background:#1E40AF;color:#fff}
.btn-primary:hover{background:#1d3a9e;color:#fff;text-decoration:none}
.btn-sm{padding:8px 18px;font-size:13px}
.btn-lg{padding:16px 36px;font-size:16px}
.site-header{background:#fff;border-bottom:1px solid #E2E8F0;position:sticky;top:0;z-index:100;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo-link{display:flex;align-items:center;gap:10px;text-decoration:none}
.logo-img{width:36px;height:36px;border-radius:8px;object-fit:cover}
.logo-text{font-family:"Poppins",sans-serif;font-weight:700;font-size:16px;color:#1E293B}
.header-nav{display:flex;align-items:center;gap:24px}
.header-nav a{font-size:14px;color:#334155;font-weight:600}
.header-nav a:hover{color:#1E40AF;text-decoration:none}.header-nav .btn-primary{color:#fff}.header-nav .btn-primary:hover{color:#fff}
.hero{background:linear-gradient(135deg,#1E293B 0%,#1e3a6e 100%);padding:80px 0 90px;text-align:center;position:relative}
.hero-eyebrow{display:inline-block;background:rgba(6,182,212,.15);border:1px solid rgba(6,182,212,.4);color:#06B6D4;font-family:"Poppins",sans-serif;font-size:12px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;padding:6px 16px;border-radius:100px;margin-bottom:24px}
.hero-title{font-size:clamp(2rem,5vw,3.5rem);font-weight:800;color:#fff;margin-bottom:20px;line-height:1.15}
.hero-title .highlight{color:#06B6D4}
.hero-subtitle{font-size:18px;color:#94A3B8;max-width:600px;margin:0 auto 32px;line-height:1.7}
.hero-meta{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-bottom:36px}
.meta-pill{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.15);color:#CBD5E1;font-size:13px;padding:6px 14px;border-radius:100px}
.section-title{font-size:clamp(1.5rem,3vw,2rem);font-weight:700;color:#1E293B;text-align:center;margin-bottom:12px}
.section-subtitle{text-align:center;color:#64748B;margin-bottom:40px;font-size:16px}
.learn-section{padding:80px 0;background:#fff}
.learn-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px}
.learn-card{background:#F8FAFC;border:1px solid #E2E8F0;border-radius:12px;padding:28px 24px;transition:transform .2s,box-shadow .2s}
.learn-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.08)}
.learn-icon{font-size:28px;margin-bottom:12px}
.learn-card h3{font-size:15px;font-weight:700;color:#1E293B;margin-bottom:8px}
.learn-card p{font-size:14px;color:#64748B;line-height:1.6}
.how-section{padding:80px 0;background:#F8FAFC}
.how-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:32px;margin-bottom:40px}
.how-step{text-align:center}
.step-number{width:48px;height:48px;background:#1E40AF;color:#fff;font-family:"Poppins",sans-serif;font-weight:700;font-size:20px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 16px}
.how-step h3{font-size:16px;font-weight:700;margin-bottom:8px;color:#1E293B}
.how-step p{font-size:14px;color:#64748B}
.how-rule{background:linear-gradient(135deg,#1E293B,#1e3a6e);color:#94A3B8;border-left:4px solid #06B6D4;border-radius:8px;padding:20px 28px;font-size:15px;max-width:600px;margin:0 auto}
.how-rule strong{color:#fff}
.curriculum-section{padding:80px 0;background:#fff}
.curriculum-list{display:flex;flex-direction:column;gap:12px;margin-bottom:40px}
.curriculum-card{display:flex;align-items:center;gap:20px;background:#F8FAFC;border:1px solid #E2E8F0;border-radius:12px;padding:20px 24px;transition:all .2s;text-decoration:none;color:inherit}
.curriculum-card:hover{border-color:#1E40AF;background:#EFF6FF;transform:translateX(4px);text-decoration:none;color:inherit}
.day-badge{background:#1E40AF;color:#fff;font-family:"Poppins",sans-serif;font-size:12px;font-weight:700;padding:4px 12px;border-radius:100px;white-space:nowrap;flex-shrink:0}
.day-badge-final{background:linear-gradient(135deg,#1E40AF,#06B6D4)}
.curriculum-content{flex:1}
.curriculum-content h3{font-size:15px;font-weight:700;color:#1E293B;margin-bottom:4px}
.curriculum-content p{font-size:13px;color:#64748B;margin:0}
.curriculum-arrow{color:#94A3B8;font-size:20px;flex-shrink:0;transition:color .2s,transform .2s}
.curriculum-card:hover .curriculum-arrow{color:#1E40AF;transform:translateX(4px)}
.curriculum-cta{text-align:center}
.site-footer{background:#1E293B;padding:32px 0;border-top:1px solid #334155}
.footer-inner{display:flex;align-items:center;justify-content:center;gap:12px;flex-direction:column;text-align:center}
.footer-logo{width:32px;height:32px;border-radius:6px;object-fit:cover}
.footer-text{font-size:14px;color:#64748B}
.footer-link{color:#06B6D4;font-weight:600}
.footer-link:hover{color:#38BDF8}
.day-header{background:#1E293B;padding:14px 0;border-bottom:3px solid #1E40AF;position:sticky;top:0;z-index:100}
.day-header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.day-header .logo-text{color:#fff}
.progress-dots{display:flex;gap:6px;align-items:center}
.progress-dot{width:26px;height:26px;border-radius:50%;background:#334155;border:2px solid #475569;display:block;text-decoration:none;transition:all .2s;flex-shrink:0}
.progress-dot.done{background:#1E40AF;border-color:#1E40AF}
.progress-dot.active{background:#06B6D4;border-color:#06B6D4;transform:scale(1.2);box-shadow:0 0 0 3px rgba(6,182,212,.3)}
.progress-dot:hover{border-color:#06B6D4}
.lesson-hero{background:linear-gradient(135deg,#1E293B 0%,#1e3a6e 100%);padding:60px 0;color:#fff}
.lesson-hero-inner{max-width:760px}
.day-label{display:inline-block;background:rgba(6,182,212,.15);color:#06B6D4;border:1px solid rgba(6,182,212,.3);border-radius:100px;padding:4px 14px;font-size:13px;font-weight:600;margin-bottom:16px;font-family:"Poppins",sans-serif}
.lesson-hero h1{font-family:"Poppins",sans-serif;font-size:clamp(28px,5vw,44px);font-weight:800;line-height:1.2;color:#fff}
.lesson-body{padding:48px 0 64px}
.lesson-content{max-width:760px}
.lesson-content h2{font-family:"Poppins",sans-serif;font-size:22px;font-weight:700;color:#1E293B;margin:36px 0 12px;border-left:4px solid #1E40AF;padding-left:14px}
.lesson-content h3{font-family:"Poppins",sans-serif;font-size:17px;font-weight:700;color:#1E293B;margin:28px 0 10px}
.lesson-content p{color:#334155;line-height:1.8;margin-bottom:16px;font-size:15.5px}
.lesson-content ul,.lesson-content ol{color:#334155;line-height:1.8;margin:0 0 16px 20px;font-size:15.5px}
.lesson-content li{margin-bottom:6px}
.lesson-content strong{color:#1E293B;font-weight:700}
.scene-callout{background:linear-gradient(135deg,#F0FDF4,#DCFCE7);border:1px solid #86EFAC;border-radius:12px;padding:24px 28px;margin:24px 0;border-left:4px solid #22C55E}
.scene-label{font-family:"Poppins",sans-serif;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#15803D;margin-bottom:8px}
.scene-callout p:last-child{color:#166534;font-size:15px;line-height:1.7;margin-bottom:0}
.key-takeaway{background:linear-gradient(135deg,#EFF6FF,#DBEAFE);border:1px solid #93C5FD;border-radius:12px;padding:24px 28px;margin:24px 0;border-left:4px solid #1E40AF}
.kt-label{font-family:"Poppins",sans-serif;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:#1E40AF;margin-bottom:8px}
.key-takeaway p:last-child{color:#1E3A8A;font-size:15px;line-height:1.7;margin-bottom:0}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:24px 0}
.can-list,.cannot-list{background:#F8FAFC;border-radius:10px;padding:20px;list-style:none}
.can-list{border:1px solid #BBF7D0}
.cannot-list{border:1px solid #FECACA}
.can-list h4{color:#15803D;font-family:"Poppins",sans-serif;font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;margin-bottom:10px}
.cannot-list h4{color:#DC2626;font-family:"Poppins",sans-serif;font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;margin-bottom:10px}
.can-list li{color:#166534;font-size:14px;margin-bottom:6px}
.cannot-list li{color:#B91C1C;font-size:14px;margin-bottom:6px}
.prompt-compare{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:24px 0}
.prompt-weak{background:#FEF2F2;border:1px solid #FECACA;border-radius:10px;padding:18px}
.prompt-strong{background:#F0FDF4;border:1px solid #BBF7D0;border-radius:10px;padding:18px}
.prompt-label{font-family:"Poppins",sans-serif;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin-bottom:8px}
.prompt-weak .prompt-label{color:#DC2626}
.prompt-strong .prompt-label{color:#15803D}
.prompt-weak p:last-child,.prompt-strong p:last-child{font-size:14px;color:#334155;margin:0;line-height:1.6;font-style:italic}
.activity-section{background:linear-gradient(135deg,#F8FAFC,#EFF6FF);border-top:1px solid #E2E8F0;border-bottom:1px solid #E2E8F0;padding:56px 0}
.activity-section h2{font-family:"Poppins",sans-serif;font-size:24px;font-weight:800;color:#1E293B;margin-bottom:10px}
.activity-goal{font-size:15px;color:#64748B;margin-bottom:28px;max-width:640px;line-height:1.7}
.activity-steps{display:flex;flex-direction:column;gap:14px;margin:0}
.activity-step{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid #E2E8F0;border-radius:12px;padding:20px 24px}
.step-num{flex-shrink:0;width:34px;height:34px;background:#1E40AF;color:#fff;font-family:"Poppins",sans-serif;font-weight:700;font-size:14px;border-radius:50%;display:flex;align-items:center;justify-content:center}
.step-body{flex:1}
.step-body .step-label{font-family:"Poppins",sans-serif;font-size:11px;font-weight:700;color:#1E40AF;text-transform:uppercase;letter-spacing:.08em;margin:0 0 5px;display:block}
.step-body p{font-size:15px;color:#334155;line-height:1.7;margin:0}
.worksheet{background:#fff;border:1px solid #E2E8F0;border-radius:12px;overflow:hidden;box-shadow:0 2px 12px rgba(0,0,0,.04)}
.worksheet-header{display:flex;align-items:center;justify-content:space-between;background:#1E293B;padding:14px 20px}
.worksheet-title{font-family:"Poppins",sans-serif;font-size:14px;font-weight:600;color:#fff}
.print-btn{background:transparent;border:1px solid #475569;color:#94A3B8;font-size:12px;font-family:"Poppins",sans-serif;font-weight:600;padding:5px 12px;border-radius:6px;cursor:pointer;transition:all .2s}
.print-btn:hover{border-color:#06B6D4;color:#06B6D4}
.worksheet-table{width:100%;border-collapse:collapse}
.worksheet-table th{background:#1E40AF;color:#fff;font-family:"Poppins",sans-serif;font-size:13px;font-weight:600;padding:12px 14px;text-align:left;border-right:1px solid rgba(255,255,255,.1)}
.worksheet-table th:last-child{border-right:none}
.worksheet-table td{padding:0;border:1px solid #E2E8F0;vertical-align:top}
.worksheet-table td:first-child{font-family:"Poppins",sans-serif;font-size:12px;font-weight:700;color:#64748B;background:#F8FAFC;padding:14px 16px;white-space:nowrap;border-right:1px solid #E2E8F0;vertical-align:middle;min-width:100px}
.ws-input{width:100%;min-height:70px;padding:10px 12px;border:none;resize:vertical;font-family:"Open Sans",sans-serif;font-size:14px;color:#334155;background:transparent}
.ws-input:focus{outline:none;background:#FAFEFF}
.quiz-section{padding:56px 0;background:#fff}
.quiz-section h2{font-family:"Poppins",sans-serif;font-size:24px;font-weight:800;color:#1E293B;margin-bottom:32px}
.quiz-question{background:#F8FAFC;border:1px solid #E2E8F0;border-radius:12px;padding:28px;margin-bottom:20px}
.quiz-question.done{box-shadow:0 2px 12px rgba(0,0,0,.06)}
.question-text{font-family:"Poppins",sans-serif;font-size:16px;font-weight:700;color:#1E293B;margin-bottom:18px;line-height:1.4}
.question-num{color:#94A3B8;margin-right:6px}
.quiz-options{display:flex;flex-direction:column;gap:10px}
.quiz-option{background:#fff;border:2px solid #E2E8F0;border-radius:8px;padding:12px 16px;text-align:left;font-size:14px;color:#334155;font-family:"Open Sans",sans-serif;cursor:pointer;transition:all .15s;width:100%;display:flex;align-items:center;gap:10px}
.quiz-option:hover:not(.answered){border-color:#1E40AF;background:#EFF6FF}
.option-indicator{width:24px;height:24px;border-radius:50%;background:#E2E8F0;color:#64748B;font-family:"Poppins",sans-serif;font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.quiz-option.correct{border-color:#16A34A;background:#F0FDF4;color:#15803D;font-weight:700}
.quiz-option.incorrect{border-color:#DC2626;background:#FEF2F2;color:#B91C1C}
.quiz-option.reveal-correct{border-color:#16A34A;background:#F0FDF4;color:#15803D;opacity:.8}
.quiz-option.answered{cursor:default}
.quiz-feedback{font-size:14px;font-weight:600;margin-top:12px;padding:10px 14px;border-radius:8px;display:none}
.quiz-feedback.show{display:block}
.quiz-feedback.feedback-correct{background:#F0FDF4;color:#15803D}
.quiz-feedback.feedback-incorrect{background:#FEF2F2;color:#B91C1C}
.lesson-nav{background:#1E293B;padding:28px 0}
.lesson-nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.nav-prev,.nav-next{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border-radius:8px;font-family:"Poppins",sans-serif;font-size:14px;font-weight:600;text-decoration:none;transition:all .2s}
.nav-prev{background:#334155;color:#94A3B8;border:1px solid #475569}
.nav-prev:hover{background:#475569;color:#fff;text-decoration:none}
.nav-next{background:#1E40AF;color:#fff}
.nav-next:hover{background:#1d4ed8;color:#fff;transform:translateX(3px);text-decoration:none}
.nav-placeholder{width:140px}
.nav-day-info{text-align:center;color:#64748B;font-size:13px;flex:1;min-width:0;padding:0 16px}
.nav-day-label{color:#64748B;font-size:12px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:4px}
.nav-day-title{color:#fff;font-family:"Poppins",sans-serif;font-size:14px;font-weight:600}
@media(max-width:640px){.two-col,.prompt-compare{grid-template-columns:1fr}.lesson-hero{padding:40px 0}.lesson-body{padding:32px 0 48px}.progress-dot{width:20px;height:20px}}
@media print{.day-header,.activity-section button,.quiz-section,.lesson-nav,.site-footer{display:none}.ws-input{border:1px solid #ccc}.lesson-body{padding:0}}