/* ============================================================
   style.css — Tema "PHP Purple" (modelo Ceproirr Academy) v2
   ============================================================ */
:root {
    --php-purple: #777BB4;
    --php-purple-dark: #4F5B93;
    --php-teal: #4F5B93;
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-card: #141414;
    --bg-card-hover: #1e1e1e;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #6b6b6b;
    --border-color: #2a2a2a;
    --shadow-purple: 0 0 30px rgba(119, 123, 180, 0.15);
    --gradient-purple: linear-gradient(135deg, #777BB4, #4F5B93);
    --transition-fast: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { font-family: 'Inter', sans-serif; background: var(--bg-primary); color: var(--text-primary); overflow-x: hidden; line-height: 1.6; }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--php-purple-dark); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--php-purple); }
::selection { background: var(--php-purple); color: var(--bg-primary); }

/* PRELOADER */
#preloader { position: fixed; inset: 0; background: var(--bg-primary); display: flex; align-items: center; justify-content: center; z-index: 99999; transition: opacity .5s ease, visibility .5s ease; }
#preloader.hidden { opacity: 0; visibility: hidden; }
.loader { width: 60px; height: 60px; border: 3px solid var(--border-color); border-top: 3px solid var(--php-purple); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* NAVBAR & SIDEBAR */
.navbar-custom { background: rgba(10,10,10,.95); backdrop-filter: blur(20px); border-bottom: 1px solid var(--border-color); padding: .8rem 0; transition: var(--transition-fast); z-index: 1050; }
.navbar-custom.scrolled { padding: .5rem 0; box-shadow: 0 4px 30px rgba(0,0,0,.5); border-bottom-color: rgba(119,123,180,.2); }
.navbar-brand-custom { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text-primary); font-weight: 800; font-size: 1.5rem; }
.brand-icon { width: 42px; height: 42px; background: var(--gradient-purple); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 1.3rem; color: #fff; box-shadow: 0 4px 15px rgba(119,123,180,.3); }
.brand-text { line-height: 1.1; }
.brand-text small { font-size: .65rem; font-weight: 400; color: var(--php-purple); letter-spacing: 2px; text-transform: uppercase; }
.btn-back-nav { background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.15); color: #fff; padding: .5rem 1rem; border-radius: 8px; text-decoration: none; font-weight: 600; font-size: .9rem; display: inline-flex; align-items: center; gap: 8px; transition: var(--transition-fast); }
.btn-back-nav:hover { background: rgba(119,123,180,.15); border-color: var(--php-purple); color: var(--php-purple); }
.sidebar-toggle { display: none; background: transparent; border: 1px solid var(--border-color); color: var(--text-primary); width: 44px; height: 44px; border-radius: 10px; font-size: 1.3rem; cursor: pointer; transition: var(--transition-fast); align-items: center; justify-content: center; }
.sidebar-toggle:hover { border-color: var(--php-purple); color: var(--php-purple); background: rgba(119,123,180,.05); }
.sidebar-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.7); backdrop-filter: blur(5px); z-index: 1060; opacity: 0; visibility: hidden; transition: var(--transition-fast); }
.sidebar-overlay.active { opacity: 1; visibility: visible; }
.sidebar-right { position: fixed; top: 0; right: -320px; width: 300px; max-width: 85vw; height: 100%; background: var(--bg-secondary); border-left: 1px solid var(--border-color); z-index: 1070; transition: var(--transition-smooth); overflow-y: auto; padding: 2rem 1.5rem; }
.sidebar-right.active { right: 0; }
.close-sidebar { position: absolute; top: 1rem; right: 1rem; background: transparent; border: none; color: var(--text-secondary); font-size: 1.5rem; cursor: pointer; width: 40px; height: 40px; border-radius: 10px; display: flex; align-items: center; justify-content: center; transition: var(--transition-fast); }
.close-sidebar:hover { background: rgba(255,255,255,.05); color: var(--php-purple); }
.sidebar-right .sidebar-brand { margin-bottom: 2rem; padding-bottom: 1.5rem; border-bottom: 1px solid var(--border-color); }
.sidebar-nav-link { display: flex; align-items: center; gap: 12px; padding: .9rem 1rem; color: var(--text-secondary); text-decoration: none; border-radius: 10px; font-weight: 500; transition: var(--transition-fast); margin-bottom: .3rem; }
.sidebar-nav-link:hover, .sidebar-nav-link.active { background: rgba(119,123,180,.1); color: var(--php-purple); }
.sidebar-nav-link i { font-size: 1.2rem; width: 24px; text-align: center; }

/* HERO SLIDESHOW */
.course-hero { position: relative; height: 60vh; min-height: 400px; overflow: hidden; }
.course-slide { position: absolute; inset: 0; opacity: 0; transition: opacity 1s ease-in-out; display: flex; align-items: center; justify-content: center; }
.course-slide.active { opacity: 1; }
.course-slide-bg { position: absolute; inset: 0; background-size: cover; background-position: center; filter: brightness(.2) saturate(1.3); transform: scale(1.05); transition: transform 8s ease-out; }
.course-slide.active .course-slide-bg { transform: scale(1); }
.course-slide-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(10,10,10,.85) 0%, rgba(79,91,147,.25) 100%); }
.course-slide-content { position: relative; z-index: 2; text-align: center; max-width: 900px; padding: 0 2rem; }
.course-slide-content h1 { font-size: 3rem; font-weight: 900; line-height: 1.1; margin-bottom: 1rem; opacity: 0; transform: translateY(30px); }
.course-slide.active h1 { animation: fadeUp .8s .5s forwards; }
.course-slide-content h1 span { background: var(--gradient-purple); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
.slide-indicators { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); z-index: 10; display: flex; gap: 8px; }
.slide-dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.3); cursor: pointer; transition: var(--transition-fast); border: none; }
.slide-dot.active { background: var(--php-purple); box-shadow: 0 0 10px rgba(119,123,180,.5); transform: scale(1.2); }
.btn-back-hero { position: absolute; top: 6rem; left: 2rem; z-index: 20; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.15); color: #fff; padding: .6rem 1.5rem; border-radius: 12px; text-decoration: none; font-weight: 600; font-size: .9rem; display: inline-flex; align-items: center; gap: 8px; transition: var(--transition-fast); backdrop-filter: blur(10px); }
.btn-back-hero:hover { background: rgba(119,123,180,.15); border-color: var(--php-purple); color: var(--php-purple); transform: translateX(-3px); }

/* BOTÃO PRINCIPAL */
.btn-purple { background: var(--gradient-purple); color: #fff; border: none; padding: .8rem 2rem; border-radius: 12px; font-weight: 600; font-size: .95rem; transition: var(--transition-fast); text-decoration: none; display: inline-flex; align-items: center; gap: 8px; box-shadow: 0 4px 15px rgba(119,123,180,.3); }
.btn-purple:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(119,123,180,.4); color: #fff; }

/* MÓDULOS */
.modules-section { padding: 4rem 0; background: var(--bg-primary); }
.modules-section .section-header { text-align: center; margin-bottom: 3rem; }
.section-badge { display: inline-block; background: rgba(119,123,180,.1); border: 1px solid rgba(119,123,180,.2); color: var(--php-purple); padding: .35rem 1rem; border-radius: 50px; font-size: .75rem; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; margin-bottom: 1rem; }
.modules-section h2 { font-size: 2.2rem; font-weight: 800; margin-bottom: .5rem; }
.modules-section h2 span, .projeto-final-card h3 span { background: var(--gradient-purple); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.modules-section .section-desc { color: var(--text-secondary); max-width: 600px; margin: 0 auto; }
.module-accordion { margin-bottom: 1rem; }
.module-header { background: var(--bg-card); border: 1px solid var(--border-color); border-radius: 16px; padding: 1.3rem 1.5rem; cursor: pointer; display: flex; align-items: center; gap: 1rem; transition: var(--transition-fast); user-select: none; }
.module-header:hover { border-color: rgba(119,123,180,.3); background: var(--bg-card-hover); }
.module-header.open { border-radius: 16px 16px 0 0; border-color: rgba(119,123,180,.3); border-bottom-color: transparent; }
.module-number { width: 48px; height: 48px; min-width: 48px; background: rgba(119,123,180,.1); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: 1.1rem; color: var(--php-purple); transition: var(--transition-fast); }
.module-header.open .module-number { background: var(--gradient-purple); color: #fff; }
.module-info { flex: 1; }
.module-info h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: .2rem; }
.module-info p { color: var(--text-muted); font-size: .8rem; margin-bottom: 0; }
.module-meta { display: flex; align-items: center; gap: 1rem; }
.module-meta span { color: var(--text-muted); font-size: .8rem; display: flex; align-items: center; gap: 4px; }
.module-toggle { width: 36px; height: 36px; min-width: 36px; border-radius: 50%; background: rgba(119,123,180,.08); display: flex; align-items: center; justify-content: center; color: var(--php-purple); transition: var(--transition-fast); font-size: 1rem; }
.module-header.open .module-toggle { transform: rotate(180deg); background: rgba(119,123,180,.2); }
.module-body { max-height: 0; overflow: hidden; transition: max-height .5s ease; background: var(--bg-card); border: 1px solid var(--border-color); border-top: none; border-radius: 0 0 16px 16px; }
.module-body.open { max-height: 50000px; }
.lesson-item { display: flex; align-items: center; gap: 1rem; padding: 1rem 1.5rem; border-bottom: 1px solid var(--border-color); transition: var(--transition-fast); cursor: pointer; }
.lesson-item:last-child { border-bottom: none; }
.lesson-item:hover { background: rgba(119,123,180,.05); }
.lesson-icon { width: 38px; height: 38px; min-width: 38px; border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: .9rem; transition: var(--transition-fast); }
.lesson-icon.video { background: rgba(119,123,180,.1); color: var(--php-purple); }
.lesson-icon.practice { background: rgba(255,193,7,.1); color: #FFC107; }
.lesson-info { flex: 1; }
.lesson-info h6 { font-size: .9rem; font-weight: 600; margin-bottom: .15rem; }
.lesson-info p { color: var(--text-muted); font-size: .78rem; margin-bottom: 0; }
.lesson-duration { color: var(--text-muted); font-size: .8rem; white-space: nowrap; display: flex; align-items: center; gap: 4px; }
.lesson-content-area { display: none; margin-top: 1rem; padding: 1rem; background: var(--bg-tertiary); border-radius: 8px; border: 1px solid var(--border-color); font-size: .9rem; color: var(--text-secondary); }
.lesson-content-area.active { display: block; animation: fadeIn .3s ease; }
.code-block { background: #0d0d0d; padding: 1rem; border-radius: 6px; font-family: 'Courier New', monospace; color: #a5d6ff; margin-top: .5rem; border-left: 3px solid var(--php-purple); white-space: pre-wrap; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

/* PROJETO FINAL */
.projeto-final-card { background: var(--bg-card); border: 1px solid rgba(119,123,180,.35); border-radius: 16px; padding: 2rem; margin-top: 2.5rem; text-align: center; box-shadow: var(--shadow-purple); }
.projeto-final-card h3 { font-weight: 800; margin: .5rem 0; }
.projeto-final-card p { color: var(--text-secondary); max-width: 700px; margin: 0 auto 1.25rem; }

/* SCROLL REVEAL */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s ease, transform .6s ease; }
.reveal.active { opacity: 1; transform: none; }

/* FOOTER */
footer { background: var(--bg-secondary); border-top: 1px solid var(--border-color); padding: 2rem 0; }
.footer-bottom { text-align: center; }
.footer-bottom p { font-size: .85rem; color: var(--text-muted); margin-bottom: 0; }
.footer-bottom a { color: var(--php-purple); text-decoration: none; }

/* FLUTUANTES */
.back-to-top { position: fixed; bottom: 2rem; right: 2rem; width: 48px; height: 48px; border-radius: 14px; background: var(--gradient-purple); color: #fff; border: none; display: flex; align-items: center; justify-content: center; font-size: 1.2rem; cursor: pointer; z-index: 1000; opacity: 0; visibility: hidden; transform: translateY(20px); transition: var(--transition-fast); box-shadow: 0 4px 15px rgba(119,123,180,.3); }
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 8px 25px rgba(119,123,180,.5); }
.whatsapp-float { position: fixed; bottom: 2rem; left: 2rem; width: 56px; height: 56px; border-radius: 50%; background: #25D366; color: #fff; display: flex; align-items: center; justify-content: center; font-size: 1.6rem; z-index: 1000; text-decoration: none; box-shadow: 0 4px 20px rgba(37,211,102,.4); transition: var(--transition-fast); animation: pulse-green 2s infinite; }
.whatsapp-float:hover { transform: scale(1.1); color: #fff; }
@keyframes pulse-green { 0%, 100% { box-shadow: 0 4px 20px rgba(37,211,102,.4); } 50% { box-shadow: 0 4px 30px rgba(37,211,102,.6), 0 0 0 10px rgba(37,211,102,.1); } }

/* RESPONSIVO — tablet, smartphone e TV */
@media (max-width: 991.98px) {
    .sidebar-toggle { display: flex; }
    .course-slide-content h1 { font-size: 2.2rem; }
    .btn-back-hero { top: 5.5rem; left: 1rem; }
}
@media (max-width: 767.98px) {
    .course-hero { height: auto; min-height: 100vh; }
    .course-slide-content h1 { font-size: 1.6rem; }
    .modules-section h2 { font-size: 1.6rem; }
    .btn-back-hero { top: 5rem; left: .5rem; padding: .5rem 1rem; font-size: .8rem; }
    .module-header { padding: 1rem; gap: .8rem; }
    .module-number { width: 40px; height: 40px; min-width: 40px; font-size: .95rem; }
    .module-info h4 { font-size: .9rem; }
    .lesson-item { padding: .8rem 1rem; gap: .7rem; }
    .lesson-info h6 { font-size: .82rem; }
    .lesson-icon { width: 32px; height: 32px; min-width: 32px; font-size: .8rem; }
}
@media (min-width: 1400px) {
    .course-slide-content h1 { font-size: 3.6rem; }
    body { font-size: 17px; }
}