/* VARIABLES */
:root {
    --bg-color: #0D0F14;
    --surface-color: #161921;
    --border-color: rgba(255, 255, 255, 0.07);
    --primary: #7C6DFA;
    --primary-dim: rgba(124, 109, 250, 0.15);
    --secondary: #4FC8A0;
    --text-main: #F2F0FF;
    --text-dim: #8B8EA8;
    --gradient: linear-gradient(135deg, #7C6DFA 0%, #4FC8A0 100%);
    
    --font-serif: 'DM Serif Display', serif;
    --font-sans: 'DM Sans', sans-serif;
    
    --transition-fast: 0.15s ease;
    --transition-nav: 0.25s ease-out;
    --transition-slide: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    
    --header-height: 56px;
    --nav-height: 60px;
}

/* RESET */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.5;
    font-size: 15px;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* NOISE BACKGROUND */
.noise-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: -1; opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* TYPOGRAPHY */
h1, h2, h3, h4, h5, .font-serif { font-family: var(--font-serif); font-weight: 400; }
.gradient-text {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* UTILS */
.mt-8 { margin-top: 32px; }
.mt-16 { margin-top: 64px; }
.text-center { text-align: center; }

/* BUTTONS */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 20px; font-size: 14px; font-weight: 500; font-family: var(--font-sans);
    border-radius: 8px; border: none; cursor: pointer; transition: var(--transition-fast);
}
.btn-large { padding: 14px 28px; font-size: 16px; border-radius: 12px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { filter: brightness(1.1); }
.btn-secondary { background: rgba(255,255,255,0.05); color: var(--text-main); border: 1px solid var(--border-color); }
.btn-secondary:hover { background: rgba(255,255,255,0.1); }
.btn-icon { background: none; border: none; color: var(--text-dim); font-size: 14px; cursor: pointer; display: flex; align-items: center; gap: 6px; }
.btn-icon:hover { color: var(--text-main); }

/* SPLASH SCREEN */
.splash-screen {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background-color: var(--bg-color); z-index: 9999;
    display: flex; align-items: center; justify-content: center;
    transition: opacity 0.6s ease;
}
.splash-screen.hidden { opacity: 0; pointer-events: none; }
.splash-content {
    max-width: 400px; padding: 24px; text-align: left;
    animation: splashFadeIn 0.6s ease forwards;
}
@keyframes splashFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}
.splash-title { font-size: 32px; line-height: 1.2; margin-bottom: 24px; }
.splash-text { color: var(--text-dim); font-size: 16px; margin-bottom: 32px; }
.splash-text ul { list-style: none; margin-top: 12px; }
.splash-text li { margin-bottom: 8px; color: var(--text-main); }

/* HEADER */
.app-header {
    position: fixed; top: 0; left: 0; width: 100%; height: var(--header-height);
    background: transparent; z-index: 100;
    transition: background 0.3s, backdrop-filter 0.3s, border-bottom 0.3s;
}
.app-header.scrolled {
    background: rgba(13, 15, 20, 0.75);
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-inner {
    max-width: 1000px; margin: 0 auto; padding: 0 20px; height: 100%;
    display: flex; justify-content: space-between; align-items: center;
}
.logo { display: flex; align-items: center; gap: 8px; font-weight: 600; font-size: 16px; }
.user-profile { font-size: 13px; color: var(--text-dim); }

/* NAVIGATION (Desktop = Top, Mobile = Bottom) */
.app-nav {
    display: flex; justify-content: center; gap: 8px;
    max-width: 1000px; margin: 0 auto; padding: 0 20px;
    position: sticky; top: var(--header-height); z-index: 90;
    background: var(--bg-color); padding-top: 16px; padding-bottom: 16px;
}
.nav-btn {
    background: transparent; border: 1px solid transparent; color: var(--text-dim);
    padding: 10px 20px; border-radius: 100px; font-size: 14px; font-weight: 500; font-family: var(--font-sans);
    cursor: pointer; display: flex; align-items: center; gap: 8px;
    transition: all var(--transition-nav);
}
.nav-btn:hover { color: var(--text-main); }
.nav-btn.active {
    background: var(--primary-dim); border: 1px solid var(--primary); color: #fff;
}

/* MAIN APP AREA */
.app-main { max-width: 1000px; margin: 0 auto; padding: 0 20px 40px; min-height: 80vh; }
.tab-view {
    display: none; opacity: 0;
}
.tab-view.active {
    display: block;
    animation: tabEnter var(--transition-nav) forwards;
}
@keyframes tabEnter {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* TOP BAR (Search & Filters) */
.top-bar { margin-bottom: 24px; position: sticky; top: calc(var(--header-height) + 72px); z-index: 80; background: var(--bg-color); padding: 10px 0; }
.search-container {
    position: relative; margin-bottom: 16px;
}
.search-icon { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--text-dim); font-size: 14px; }
.search-input {
    width: 100%; background: var(--surface-color); border: 1px solid var(--border-color);
    padding: 14px 16px 14px 40px; border-radius: 12px; color: var(--text-main);
    font-size: 15px; font-family: var(--font-sans); transition: var(--transition-fast);
}
.search-input:focus { outline: none; border-color: var(--primary); background: rgba(255,255,255,0.05); }

.filter-chips-container {
    display: flex; gap: 8px; overflow-x: auto; padding-bottom: 8px; scrollbar-width: none;
}
.filter-chips-container::-webkit-scrollbar { display: none; }
.chip-btn {
    background: var(--surface-color); border: 1px solid var(--border-color); color: var(--text-dim);
    padding: 6px 16px; border-radius: 100px; font-size: 13px; font-family: var(--font-sans);
    cursor: pointer; white-space: nowrap; transition: var(--transition-fast);
}
.chip-btn:hover { color: var(--text-main); }
.chip-btn.active { background: #fff; color: #000; border-color: #fff; }

/* GRID CARDS */
.grid-container {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}
.content-card {
    background: var(--surface-color); border: 1px solid var(--border-color); border-radius: 16px;
    padding: 20px; cursor: pointer; transition: var(--transition-fast);
    display: flex; flex-direction: column; opacity: 0;
    animation: cardStagger 0.4s ease-out forwards;
}
@keyframes cardStagger { to { opacity: 1; transform: translateY(0); } }

.content-card:hover { transform: translateY(-3px); border-color: rgba(255,255,255,0.15); background: rgba(255,255,255,0.05); }
.c-header { font-size: 12px; color: var(--text-dim); margin-bottom: 12px; display: flex; justify-content: space-between; }
.c-title { font-family: var(--font-serif); font-size: 20px; margin-bottom: 8px; display: flex; align-items: flex-start; gap: 10px; }
.c-emoji { font-style: normal; }
.c-desc { font-size: 14px; color: var(--text-dim); margin-bottom: 16px; flex-grow: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;}
.c-footer { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--border-color); padding-top: 12px; }
.c-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.c-tag { font-size: 11px; color: var(--secondary); background: rgba(79, 200, 160, 0.1); padding: 2px 8px; border-radius: 4px; }
.c-action { font-size: 13px; color: var(--text-dim); font-weight: 500; }

.empty-state { display: none; text-align: center; padding: 60px 20px; color: var(--text-dim); font-size: 15px; }

/* SLIDE-IN PANEL */
.slide-overlay {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(13, 15, 20, 0.6); backdrop-filter: blur(4px); -webkit-backdrop-filter: blur(4px);
    z-index: 1000; opacity: 0; pointer-events: none; transition: opacity var(--transition-slide);
}
.slide-overlay.active { opacity: 1; pointer-events: all; }
.slide-panel {
    position: fixed; top: 0; right: 0; width: 100%; max-width: 480px; height: 100vh;
    background: var(--bg-color); border-left: 1px solid var(--border-color); z-index: 1001;
    display: flex; flex-direction: column; transform: translateX(100%); transition: transform var(--transition-slide);
    box-shadow: -10px 0 30px rgba(0,0,0,0.5);
}
.slide-panel.active { transform: translateX(0); }
.panel-header { padding: 16px 24px; border-bottom: 1px solid var(--border-color); display: flex; align-items: center; }
.panel-content { padding: 32px 24px; overflow-y: auto; flex-grow: 1; }
.panel-footer { padding: 16px 24px; border-top: 1px solid var(--border-color); display: flex; justify-content: space-between; background: var(--bg-color); }

/* Panel Internal Styling */
.p-eyebrow { font-size: 12px; color: var(--text-dim); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; display: block; }
.p-title { font-family: var(--font-serif); font-size: 28px; line-height: 1.2; margin-bottom: 24px; }
.p-text { font-size: 16px; line-height: 1.6; color: var(--text-main); margin-bottom: 24px; font-style: italic; }
.p-section-title { font-size: 11px; color: var(--primary); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; margin-top: 24px; display: block;}
.p-section-text { font-size: 15px; color: var(--text-dim); line-height: 1.5; margin-bottom: 24px;}
.p-list { list-style-position: inside; color: var(--text-dim); font-size: 15px; line-height: 1.6; margin-bottom: 24px; }
.p-list li { margin-bottom: 8px; }
.p-meta { display: flex; gap: 8px; margin-top: 32px; flex-wrap: wrap;}

/* BONUS SECTION */
.bonus-wrapper { display: flex; flex-direction: column; gap: 48px; padding-top: 24px; }
.bonus-divider { border: 0; height: 1px; background: var(--border-color); }
.bonus-card-large { }
.bonus-header { margin-bottom: 32px; }
.bonus-badge { display: inline-block; background: var(--primary); color: #fff; font-size: 11px; font-weight: 700; text-transform: uppercase; padding: 4px 10px; border-radius: 4px; margin-bottom: 16px; }
.bonus-header h2 { font-size: 28px; margin-bottom: 12px; line-height: 1.2; }
.bonus-header p { color: var(--text-dim); font-size: 16px; }
.info-alert { background: rgba(79, 200, 160, 0.1); border: 1px solid rgba(79, 200, 160, 0.3); color: var(--secondary); padding: 12px 16px; border-radius: 8px; font-size: 13px; margin-top: 16px; }

.split-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.q-group-title { font-size: 14px; color: var(--primary); margin-bottom: 16px; font-family: var(--font-sans); }
.q-group ol { padding-left: 20px; color: var(--text-main); font-size: 14px; }
.q-group li { margin-bottom: 12px; line-height: 1.5; }

.b2-grid { display: grid; gap: 24px; }
.b2-item { background: var(--surface-color); padding: 24px; border-radius: 12px; border: 1px solid var(--border-color); }
.b2-item h4 { font-size: 12px; color: var(--primary); text-transform: uppercase; margin-bottom: 8px; font-family: var(--font-sans); }
.b2-item h5 { font-size: 20px; font-family: var(--font-serif); margin-bottom: 12px; }
.b2-item p { font-size: 14px; color: var(--text-dim); font-style: italic; margin-bottom: 16px; }
.b2-ref { display: block; font-size: 13px; color: var(--secondary); border-top: 1px solid var(--border-color); padding-top: 12px; }

.b3-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.b3-card { background: var(--surface-color); padding: 24px; border-radius: 12px; border: 1px solid var(--border-color); }
.b3-card h3 { font-size: 16px; font-family: var(--font-sans); font-weight: 600; margin-bottom: 12px; color: #fff; }
.b3-card p { font-size: 14px; color: var(--text-dim); }

.flex-col-center { display: flex; flex-direction: column; align-items: center; }
.mock-form { background: #fff; color: #111; width: 100%; max-width: 600px; padding: 32px; border-radius: 4px; box-shadow: 0 4px 20px rgba(0,0,0,0.2); font-family: monospace; font-size: 13px; }
.mf-title { font-size: 16px; font-weight: bold; text-align: center; }
.mf-hr { border: 0; border-bottom: 1px solid #ccc; margin: 16px 0; }
.mf-row { display: flex; justify-content: space-between; margin-bottom: 8px; }
.mf-field { margin-top: 16px; font-weight: bold; color: #555; }
.mf-line { border-bottom: 1px dashed #ccc; height: 16px; width: 100%; margin-bottom: 8px; }

.spacer-bottom { display: none; }


/* RESPONSIVE & MOBILE FIRST OVERRIDES */
@media (max-width: 768px) {
    /* Layout */
    .grid-container { grid-template-columns: 1fr; }
    .split-3 { grid-template-columns: 1fr; }
    .b3-grid { grid-template-columns: 1fr; }
    .app-main { padding-left: 16px; padding-right: 16px; }
    .top-bar { top: var(--header-height); }
    
    /* Splash */
    .splash-content { padding: 16px; }
    .splash-title { font-size: 28px; }
    
    /* Bottom Navigation iOS Style */
    .app-nav {
        position: fixed; top: auto; bottom: 0; left: 0; width: 100%;
        background: rgba(13, 15, 20, 0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
        border-top: 1px solid var(--border-color); padding: 8px 16px 24px; /* padding bottom extra p/ iphone notch */
        justify-content: space-around; gap: 0; z-index: 900; height: var(--nav-height); align-items: flex-start;
    }
    .nav-btn {
        flex-direction: column; padding: 6px; border: none; border-radius: 8px; gap: 4px; width: 33%;
    }
    .nav-btn.active {
        background: transparent; border: none; color: var(--primary);
    }
    .nav-btn.active .nav-icon { color: var(--primary); }
    .nav-icon { font-size: 20px; }
    .nav-label { font-size: 10px; font-weight: 500; }
    
    /* Compensa espaço nav */
    .spacer-bottom { display: block; height: calc(var(--nav-height) + 24px); }
    
    /* Painel Lateral 100% */
    .slide-panel { max-width: 100%; }
}