:root {
    --bg-dark: #0a0c10;
    --card-bg: rgba(18, 22, 31, 0.7);
    --text-main: #f0f4f8;
    --text-muted: #94a3b8;
    --primary: #00d2ff;
    --secondary: #3a7bd5;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --whatsapp-green: #25D366;
    --whatsapp-dark: #111b21;
    --whatsapp-header: #202c33;
    --whatsapp-in: #202c33;
    --whatsapp-out: #005c4b;
    --accent-red: #ef4444;
    --accent-purple: #a855f7;
    --accent-green: #10b981;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
    line-height: 1.5;
}

h1, h2, h3, .logo {
    font-family: 'Outfit', sans-serif;
}

code {
    background: rgba(0, 210, 255, 0.1);
    color: var(--primary);
    padding: 0.2rem 0.4rem;
    border-radius: 0.3rem;
    font-family: monospace;
    font-size: 0.9rem;
}

/* Background Blobs */
.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    opacity: 0.45;
    animation: float 12s infinite ease-in-out alternate;
}

.blob-1 {
    top: -10%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary), transparent 70%);
}

.blob-2 {
    bottom: 10%;
    right: -10%;
    width: 550px;
    height: 550px;
    background: radial-gradient(circle, var(--accent-purple), transparent 70%);
    animation-delay: -6s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(40px, 60px) scale(1.1); }
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 5%;
    background: rgba(10, 12, 16, 0.85);
    backdrop-filter: blur(16px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--glass-border);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i {
    color: var(--whatsapp-green);
    font-size: 1.8rem;
}

.logo .highlight {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 1.8rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--text-main);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.9rem;
    border-radius: 2rem;
    font-size: 0.82rem;
    font-weight: 600;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--accent-green);
}

.pulse-dot {
    width: 8px;
    height: 8px;
    background-color: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-green);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); opacity: 0.8; }
    50% { transform: scale(1.3); opacity: 1; }
    100% { transform: scale(0.95); opacity: 0.8; }
}

.nav-btn {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    border: none;
    padding: 0.65rem 1.4rem;
    border-radius: 2rem;
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 210, 255, 0.3);
}

/* Hero Section */
.hero {
    display: flex;
    padding: 4rem 5%;
    align-items: center;
    gap: 3rem;
    min-height: 85vh;
}

.hero-content {
    flex: 1.1;
}

.badge {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: rgba(0, 210, 255, 0.1);
    border: 1px solid rgba(0, 210, 255, 0.3);
    border-radius: 2rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.15;
    margin-bottom: 1.2rem;
    font-weight: 800;
}

.gradient-text {
    background: linear-gradient(45deg, var(--whatsapp-green), #00d2ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p {
    font-size: 1.15rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.6;
    max-width: 95%;
}

.hero-stats-mini {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 1rem 0;
    border-top: 1px solid var(--glass-border);
    border-bottom: 1px solid var(--glass-border);
}

.mini-stat {
    display: flex;
    flex-direction: column;
}

.stat-num {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary);
    font-family: 'Outfit', sans-serif;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.primary-btn {
    background: linear-gradient(45deg, var(--whatsapp-green), #10b981);
    color: white;
    border: none;
    padding: 0.9rem 1.8rem;
    border-radius: 0.6rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
}

.secondary-btn {
    background: var(--glass-bg);
    color: white;
    border: 1px solid var(--glass-border);
    padding: 0.9rem 1.8rem;
    border-radius: 0.6rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    transition: all 0.3s ease;
}

.secondary-btn:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-2px);
}

/* Glass Card */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 1.2rem;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

/* Phone Mockup Live Simulator */
.hero-visual {
    flex: 0.9;
    display: flex;
    justify-content: center;
}

.phone-mockup {
    width: 380px;
    height: 620px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    border-radius: 2rem;
    border: 2px solid var(--glass-border);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
}

.phone-header {
    background: var(--whatsapp-header);
    padding: 0.9rem 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-info {
    display: flex;
    flex-direction: column;
    flex: 1;
}

.contact-info strong {
    font-size: 0.95rem;
}

.status-online {
    font-size: 0.75rem;
    color: var(--whatsapp-green);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.status-online i {
    font-size: 0.5rem;
}

.sound-toggle-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0.3rem;
    transition: color 0.2s ease;
}

.sound-toggle-btn.muted {
    color: #ef4444;
}

.chat-container {
    flex: 1;
    background: var(--whatsapp-dark);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    overflow-y: auto;
    scroll-behavior: smooth;
}

.message {
    max-width: 85%;
    padding: 0.75rem 1rem;
    border-radius: 0.8rem;
    font-size: 0.88rem;
    line-height: 1.45;
    word-break: break-word;
    animation: fadeIn 0.3s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.message.out {
    align-self: flex-end;
    background: var(--whatsapp-out);
    color: white;
    border-top-right-radius: 0;
}

.message.in {
    align-self: flex-start;
    background: var(--whatsapp-in);
    color: #e9edef;
    border-top-left-radius: 0;
}

.message pre, .message code {
    background: rgba(0,0,0,0.3);
    padding: 0.1rem 0.3rem;
    border-radius: 0.2rem;
}

/* Quick action chips inside phone */
.quick-chips {
    background: #111b21;
    padding: 0.6rem 0.8rem;
    display: flex;
    gap: 0.4rem;
    overflow-x: auto;
    border-top: 1px solid rgba(255,255,255,0.05);
}

.chip-btn {
    background: #202c33;
    color: #aebac1;
    border: 1px solid rgba(255,255,255,0.1);
    padding: 0.35rem 0.7rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    white-space: nowrap;
    cursor: pointer;
    transition: all 0.2s ease;
}

.chip-btn:hover {
    background: #2a3942;
    color: white;
}

.chip-btn.highlight {
    background: rgba(0, 210, 255, 0.15);
    border-color: var(--primary);
    color: var(--primary);
}

.phone-input {
    background: var(--whatsapp-header);
    padding: 0.8rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.phone-input input {
    flex: 1;
    background: #2a3942;
    border: none;
    outline: none;
    padding: 0.6rem 1rem;
    border-radius: 1.5rem;
    font-size: 0.88rem;
    color: white;
}

.phone-input input::placeholder {
    color: #8696a0;
}

.phone-input button {
    background: var(--whatsapp-green);
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease;
}

.phone-input button:hover {
    transform: scale(1.05);
}

/* Dashboard Section */
.dashboard-section {
    padding: 5rem 5%;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.3rem;
    margin-bottom: 0.6rem;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.metric-card {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.metric-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 210, 255, 0.3);
}

.metric-icon {
    width: 54px;
    height: 54px;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

.metric-icon.blue { background: rgba(0, 210, 255, 0.12); color: var(--primary); }
.metric-icon.green { background: rgba(16, 185, 129, 0.12); color: var(--accent-green); }
.metric-icon.red { background: rgba(239, 68, 68, 0.12); color: var(--accent-red); }
.metric-icon.purple { background: rgba(168, 85, 247, 0.12); color: var(--accent-purple); }

.metric-data {
    display: flex;
    flex-direction: column;
}

.metric-title {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.metric-data h3 {
    font-size: 1.4rem;
    font-weight: 700;
}

/* Dashboard Content Grid */
.dashboard-content {
    display: grid;
    grid-template-columns: 1fr 1.6fr;
    gap: 2rem;
}

.chart-container-card, .sheet-container-card {
    padding: 1.8rem;
    display: flex;
    flex-direction: column;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.card-header h3 {
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text-main);
}

.chart-wrapper {
    position: relative;
    height: 320px;
    width: 100%;
}

.sheet-info {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.95rem;
    color: var(--whatsapp-green);
}

.mode-tag {
    background: rgba(0, 210, 255, 0.15);
    color: var(--primary);
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: 1rem;
    font-weight: 600;
}

.sheet-actions {
    display: flex;
    gap: 0.6rem;
}

.action-btn {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--glass-border);
    padding: 0.45rem 0.9rem;
    border-radius: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: background 0.2s ease;
    text-decoration: none;
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.12);
}

.action-btn.primary {
    background: var(--primary);
    color: black;
    border: none;
    font-weight: 600;
}

.action-btn.danger {
    color: var(--accent-red);
    border-color: rgba(239, 68, 68, 0.3);
}

.action-btn.danger:hover {
    background: rgba(239, 68, 68, 0.15);
}

/* Data Table */
.table-responsive {
    overflow-x: auto;
    max-height: 360px;
    overflow-y: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.data-table th {
    background: rgba(15, 23, 42, 0.8);
    color: var(--text-muted);
    font-weight: 600;
    text-align: left;
    padding: 0.8rem 1rem;
    position: sticky;
    top: 0;
    z-index: 2;
    border-bottom: 1px solid var(--glass-border);
}

.data-table td {
    padding: 0.8rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.data-table tbody tr {
    transition: background 0.2s ease;
}

.data-table tbody tr:hover {
    background: rgba(0, 210, 255, 0.05);
}

.type-badge {
    padding: 0.25rem 0.6rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.type-badge.sale {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
}

.type-badge.expense {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
}

.empty-msg {
    text-align: center;
    color: var(--text-muted);
    padding: 3rem !important;
}

/* Features */
.features {
    padding: 4rem 5%;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.8rem;
}

.feature-card {
    padding: 2rem;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 210, 255, 0.3);
}

.icon-wrapper {
    width: 52px;
    height: 52px;
    border-radius: 10px;
    background: rgba(0, 210, 255, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.4rem;
    color: var(--primary);
    margin-bottom: 1.2rem;
}

/* Demo & Architecture */
.demo-section {
    padding: 4rem 5%;
}

.architecture-diagram {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 2.5rem 3.5rem;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    text-align: center;
}

.step i {
    font-size: 2.2rem;
    color: var(--primary);
}

.step.center i { color: #f59e0b; }
.step:last-child i { color: var(--accent-green); }

.step span { font-weight: 500; font-size: 0.95rem; }

.arrow {
    height: 2px;
    width: 80px;
    background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
    position: relative;
}

.arrow::after {
    content: '▶';
    position: absolute;
    right: 10px;
    top: -9px;
    color: var(--text-muted);
    font-size: 0.75rem;
}

/* Technical Setup Section */
.setup-section {
    padding: 4rem 5%;
}

.setup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.setup-card {
    padding: 2rem;
}

.setup-card h3 {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--primary);
}

.setup-card pre {
    background: #0d1117;
    border: 1px solid var(--glass-border);
    padding: 1.2rem;
    border-radius: 0.8rem;
    color: #c9d1d9;
    font-size: 0.88rem;
    overflow-x: auto;
}

/* Footer */
.footer {
    padding: 2.5rem 5%;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        padding-top: 2rem;
    }
    .dashboard-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-content h1 { font-size: 2.5rem; }
    .architecture-diagram { flex-direction: column; gap: 1.5rem; }
    .arrow { width: 2px; height: 40px; }
    .arrow::after { content: '▼'; right: -4px; top: 12px; }
}