/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    /* Harmony Palette: Forest Energy & Solar Amber */
    --primary: #10b981;          /* Emerald/Green */
    --primary-hover: #059669;
    --accent: #f59e0b;           /* Amber/Gold */
    --bg-dark: #0f172a;          /* Slate 900 */
    --bg-card: #1e293b;          /* Slate 800 */
    --bg-chat-header: #111827;   /* Slate 950 */
    --text-main: #f8fafc;        /* Slate 50 */
    --text-muted: #94a3b8;       /* Slate 400 */
    --border: #334155;           /* Slate 700 */
    --accent-light: rgba(245, 158, 11, 0.15);
    --primary-light: rgba(16, 185, 129, 0.1);
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==========================================================================
   RESET & LAYOUT BASE
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
}

body {
    overflow-x: hidden;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.grid {
    display: grid;
    gap: 32px;
}

/* Typography Utility */
h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 3.5vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

p {
    color: var(--text-muted);
}

/* Custom Text Helpers */
.text-accent { color: var(--accent); }
.text-green { color: var(--primary); }
.text-center { text-align: center; }

.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, #34d399 50%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-main);
    border: 1.5px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
}

.btn-outline {
    display: inline-block;
    padding: 8px 18px;
    font-weight: 500;
    font-size: 0.9rem;
    border-radius: 6px;
    border: 1px solid var(--primary);
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: #fff;
}

/* ==========================================================================
   HEADER NAVIGATION
   ========================================================================== */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.logo-icon {
    animation: rotateSlow 20s linear infinite;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.nav-links a:hover:not(.btn-outline) {
    color: var(--primary);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    padding: 80px 0 100px 0;
    position: relative;
    overflow: hidden;
}

.hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: center;
}

.badge-new {
    display: inline-block;
    background-color: var(--accent-light);
    color: var(--accent);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.15rem;
    margin: 20px 0 32px 0;
    max-width: 540px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    border-top: 1px solid var(--border);
    padding-top: 24px;
}

.stat-item h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-item p {
    font-size: 0.85rem;
}

/* Hero Visual Graphic (Solar Panel Illusion) */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    height: 100%;
}

.solar-graphic {
    position: relative;
    width: 320px;
    height: 320px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.solar-panel-card {
    width: 260px;
    height: 260px;
    background-color: #1e3a8a;
    border: 6px solid #475569;
    border-radius: 12px;
    transform: rotateX(40deg) rotateY(-15deg) rotateZ(10deg);
    position: relative;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.8);
    overflow: hidden;
    animation: floatAnimation 6s ease-in-out infinite;
}

.panel-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(3, 1fr);
    height: 100%;
    width: 100%;
}

.panel-grid span {
    border: 1px solid rgba(255, 255, 255, 0.15);
    background-color: rgba(30, 58, 138, 0.4);
}

.energy-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.3) 0%, transparent 60%);
    animation: glowMove 8s linear infinite;
    pointer-events: none;
}

.info-card {
    position: absolute;
    background: rgba(30, 41, 59, 0.7);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
    padding: 12px 18px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow);
}

.icon-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.1rem;
}

.savings-card {
    top: 10px;
    right: -30px;
    animation: floatAnimation 5s ease-in-out infinite alternate;
}

.meter-card {
    bottom: 10px;
    left: -40px;
    animation: floatAnimation 7s ease-in-out infinite alternate;
}

/* ==========================================================================
   SERVICES SECTION
   ========================================================================== */
.services-section {
    padding: 100px 0;
    border-top: 1px solid var(--border);
}

.section-title {
    max-width: 600px;
    margin: 0 auto 56px auto;
}

.section-title p {
    margin-top: 12px;
}

.services-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.service-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    padding: 36px;
    border-radius: 12px;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-6px);
    border-color: var(--primary);
    box-shadow: 0 10px 20px -10px rgba(16, 185, 129, 0.2);
}

.service-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.service-card p {
    margin-top: 12px;
    font-size: 0.95rem;
}

/* ==========================================================================
   CTA & FOOTER SECTIONS
   ========================================================================== */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, rgba(16, 185, 129, 0.05) 100%);
    border-top: 1px solid var(--border);
}

.cta-section p {
    font-size: 1.15rem;
    margin: 16px auto 32px auto;
    max-width: 560px;
}

.btn-large {
    font-size: 1.1rem;
    padding: 16px 36px;
}

.footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    font-size: 0.9rem;
}

.footer a {
    text-decoration: none;
    font-weight: 500;
}

/* ==========================================================================
   INTERACTIVE CHATBOT WIDGET
   ========================================================================== */
.chatbot-widget {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

/* Speech Bubble Prompt */
.chat-prompt {
    background-color: var(--accent);
    color: #000;
    padding: 10px 16px;
    border-radius: 12px 12px 0 12px;
    margin-bottom: 12px;
    box-shadow: var(--shadow);
    font-weight: 600;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    animation: slideUpPrompt 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) both;
    position: relative;
    user-select: none;
}

.chat-prompt:hover {
    transform: translateY(-2px);
}

.prompt-close {
    background: none;
    border: none;
    color: #000;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    padding: 0 2px;
}

/* Floating Toggle Button */
.chat-toggle-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--primary);
    border: none;
    color: white;
    font-size: 1.75rem;
    cursor: pointer;
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.4);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
    position: relative;
}

.chat-toggle-btn:hover {
    transform: scale(1.08) rotate(5deg);
    box-shadow: 0 10px 28px rgba(16, 185, 129, 0.6);
}

.unread-dot {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--accent);
    border: 2px solid var(--primary);
    animation: pulseGlow 2s infinite;
}

/* Chat Container Window */
.chat-container {
    display: none; /* Controlled by toggleChat() */
    width: 380px;
    height: 540px;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
    flex-direction: column;
    overflow: hidden;
    position: absolute;
    bottom: 80px;
    right: 0;
    transform-origin: bottom right;
    animation: scaleInChat 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Header */
.chat-header {
    background-color: var(--bg-chat-header);
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.chat-header-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar-container {
    position: relative;
}

.chat-avatar {
    font-size: 1.5rem;
    background-color: var(--primary-light);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

.online-indicator {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: #10b981;
    border: 2px solid var(--bg-chat-header);
}

.chat-header h4 {
    font-size: 0.95rem;
    font-weight: 600;
}

.chat-status {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.chat-close-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.75rem;
    cursor: pointer;
    transition: var(--transition);
}

.chat-close-btn:hover {
    color: #fff;
}

/* Message Area */
.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
    scroll-behavior: smooth;
}

/* Scrollbar Styling */
.chat-messages::-webkit-scrollbar {
    width: 5px;
}
.chat-messages::-webkit-scrollbar-track {
    background: transparent;
}
.chat-messages::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 10px;
}

/* Single Message Bubbles */
.message {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: 12px;
    font-size: 0.88rem;
    word-wrap: break-word;
    animation: messageSlideIn 0.3s ease forwards;
}

.message.bot {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.02);
}

.message.user {
    background-color: var(--primary);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.message.system-alert {
    background-color: rgba(245, 158, 11, 0.05);
    border: 1.5px dashed var(--accent);
    color: var(--accent);
    max-width: 95%;
    align-self: center;
    border-radius: 8px;
}

/* Dynamic Interactive Sizing Results Card inside Chat */
.result-card {
    background-color: #0f172a;
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 14px;
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.result-card h5 {
    color: var(--accent);
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 6px;
    font-weight: 700;
}

.result-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
}

.result-val {
    font-weight: 600;
    color: var(--text-main);
}

/* Typing Indicator Animation */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 12px 16px;
}

.typing-indicator span {
    width: 6px;
    height: 6px;
    background-color: var(--text-muted);
    border-radius: 50%;
    animation: bounceTyping 1.4s infinite ease-in-out both;
}

.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }

/* Interactive Chips/Buttons Container */
.chat-chips-container {
    padding: 10px 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    background-color: rgba(0, 0, 0, 0.1);
    border-top: 1px solid var(--border);
}

.chat-chip {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 8px 14px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.chat-chip:hover {
    border-color: var(--primary);
    background-color: var(--primary-light);
    color: var(--primary);
}

/* Footer Input Area */
.chat-input-form {
    padding: 16px 20px;
    display: flex;
    gap: 8px;
    border-top: 1px solid var(--border);
    background-color: var(--bg-chat-header);
}

.chat-input-form input {
    flex: 1;
    background-color: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: white;
    padding: 10px 14px;
    font-size: 0.88rem;
    outline: none;
    font-family: inherit;
    transition: var(--transition);
}

.chat-input-form input:focus {
    border-color: var(--primary);
}

.chat-send-btn {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    border: none;
    background-color: var(--primary);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.chat-send-btn:hover {
    background-color: var(--primary-hover);
}

/* ==========================================================================
   ANIMATION KEYFRAMES
   ========================================================================== */
@keyframes pulseGlow {
    0% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.7); }
    70% { box-shadow: 0 0 0 6px rgba(245, 158, 11, 0); }
    100% { box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
}

@keyframes slideUpPrompt {
    0% { transform: translateY(15px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

@keyframes scaleInChat {
    0% { transform: scale(0.85); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

@keyframes messageSlideIn {
    0% { transform: translateY(8px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

@keyframes bounceTyping {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1.0); }
}

@keyframes floatAnimation {
    0% { transform: translateY(0) rotateX(40deg) rotateY(-15deg) rotateZ(10deg); }
    50% { transform: translateY(-10px) rotateX(40deg) rotateY(-15deg) rotateZ(10deg); }
    100% { transform: translateY(0) rotateX(40deg) rotateY(-15deg) rotateZ(10deg); }
}

@keyframes glowMove {
    0% { transform: translate(-10%, -10%) rotate(0deg); }
    100% { transform: translate(-10%, -10%) rotate(360deg); }
}

@keyframes rotateSlow {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================================== */
@media (max-width: 991px) {
    .hero-grid {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 48px;
    }
    .hero-content p {
        margin: 20px auto 32px auto;
    }
    .hero-actions {
        justify-content: center;
    }
    .hero-stats {
        justify-content: center;
        gap: 32px;
    }
    .hero-visual {
        margin-top: 16px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none; /* Simplify nav on mobile */
    }
}

@media (max-width: 480px) {
    .chat-container {
        width: 100%;
        height: 100%;
        position: fixed;
        bottom: 0;
        right: 0;
        top: 0;
        left: 0;
        border-radius: 0;
    }
    .chatbot-widget {
        bottom: 12px;
        right: 12px;
    }
    .chat-toggle-btn {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
}