/* OTTO Automation - Modern SaaS Website Styles */

/* ===== CSS Variables ===== */
:root {
    --color-primary: #3AB573;
    --color-bg: #000000;
    --color-bg-light: #0a0a0a;
    --color-bg-card: #141414;
    --color-text: #ffffff;
    --color-text-secondary: #555555;
    --color-border: #222222;

    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-2xl: 64px;
    --spacing-3xl: 96px;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    --shadow-sm: 0 2px 8px rgba(58, 181, 115, 0.1);
    --shadow-md: 0 4px 16px rgba(58, 181, 115, 0.15);
    --shadow-lg: 0 8px 32px rgba(58, 181, 115, 0.2);
}

/* ===== Reset & Base Styles ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    overflow-x: hidden;
    width: 100%;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===== Typography ===== */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: clamp(40px, 5vw, 64px);
}

h2 {
    font-size: clamp(32px, 4vw, 48px);
}

h3 {
    font-size: clamp(24px, 3vw, 32px);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    opacity: 0.8;
}

/* ===== Buttons ===== */
.btn-primary, .btn-secondary {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 14px;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid var(--color-primary);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-bg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    opacity: 1;
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-primary);
}

.btn-secondary:hover {
    background-color: rgba(58, 181, 115, 0.1);
    transform: translateY(-2px);
    opacity: 1;
}

.btn-large {
    padding: 18px 40px;
    font-size: 16px;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md) 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo-text {
    font-size: 32px;
    font-weight: 900;
    color: var(--color-primary);
    letter-spacing: 2px;
}

.logo-subtext {
    font-size: 10px;
    color: var(--color-text-secondary);
    letter-spacing: 3px;
    font-weight: 600;
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-links a {
    color: var(--color-text);
    font-weight: 500;
    font-size: 14px;
}

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

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background-color: var(--color-primary);
    border-radius: 2px;
}

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    background: linear-gradient(135deg, var(--color-bg) 0%, #0d1a13 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(58, 181, 115, 0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-text {
    animation: slideInLeft 0.8s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-title {
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #ffffff 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.trust-line {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: 14px;
}

.trust-line span {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* Chat Demo */
.hero-visual {
    animation: slideInRight 0.8s ease-out;
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.chat-demo {
    background-color: #1a1a2e;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.4);
    width: 100%;
    max-width: 380px;
}

.chat-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, #2d9c5f 100%);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 14px;
}

.chat-avatar {
    width: 48px;
    height: 48px;
    background: #000;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.chat-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.chat-avatar::after {
    content: '';
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 12px;
    height: 12px;
    background: #22c55e;
    border: 2px solid var(--color-primary);
    border-radius: 50%;
}

.chat-header-info h3 {
    margin: 0;
    color: #fff;
    font-size: 18px;
    font-weight: 700;
}

.chat-header-info p {
    margin: 4px 0 0;
    color: rgba(255,255,255,0.85);
    font-size: 13px;
}

.chat-messages {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: #1a1a2e;
}

.message {
    display: flex;
    gap: 10px;
    max-width: 85%;
    animation: messageSlide 0.5s ease-out;
}

.message.customer {
    margin-left: auto;
    flex-direction: row-reverse;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.message-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.message.customer .message-avatar {
    background: #fff;
    font-size: 14px;
}

.message-content {
    background: #252542;
    padding: 12px 16px;
    border-radius: 18px;
    border-bottom-left-radius: 6px;
    color: #fff;
    font-size: 14px;
    line-height: 1.5;
}

.message.customer .message-content {
    background: var(--color-primary);
    color: #fff;
    border-radius: 18px;
    border-bottom-right-radius: 6px;
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-input-demo {
    padding: 16px;
    border-top: 1px solid #3a3a5a;
    display: flex;
    gap: 10px;
    align-items: center;
    background: #151525;
}

.chat-input-demo input {
    flex: 1;
    border: 2px solid #3a3a5a;
    border-radius: 24px;
    padding: 12px 18px;
    font-size: 14px;
    background: #252542;
    color: #fff;
    outline: none;
}

.chat-input-demo input::placeholder {
    color: #a0a0b0;
}

.chat-input-demo button {
    width: 44px;
    height: 44px;
    background: var(--color-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-input-demo button svg {
    width: 20px;
    height: 20px;
    fill: #fff;
}

/* ===== Stats Bar ===== */
.stats-bar {
    background-color: var(--color-bg-light);
    padding: var(--spacing-xl) 0;
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
}

.stat-icon {
    font-size: 32px;
}

.stat-number {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-primary);
}

.stat-label {
    font-size: 14px;
    color: var(--color-text-secondary);
}

/* ===== Problem/Solution Section ===== */
.problem-solution {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg);
}

.problem-solution .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
}

.problem-side h2, .solution-side h2 {
    margin-bottom: var(--spacing-xl);
}

.problem-side h2 {
    color: #ff6b6b;
}

.solution-side h2 {
    color: var(--color-primary);
}

.problem-list, .solution-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.problem-item, .solution-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--color-bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.icon-x {
    color: #ff6b6b;
    font-size: 20px;
    font-weight: bold;
    flex-shrink: 0;
}

.icon-check {
    color: var(--color-primary);
    font-size: 20px;
    font-weight: bold;
    flex-shrink: 0;
}

/* ===== How It Works ===== */
.how-it-works {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-light);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    font-size: 18px;
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.step-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.step-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), transparent);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.step-card:hover::before {
    transform: scaleX(1);
}

.step-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-primary), #2d9c5f);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--color-bg);
    margin: 0 auto var(--spacing-md);
}

.step-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.step-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.step-timeline {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 14px;
}

.cta-center {
    text-align: center;
}

/* ===== Features Section ===== */
.features {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}

.feature-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
    font-size: 20px;
}

.feature-card p {
    color: var(--color-text-secondary);
    font-size: 14px;
}

/* ===== Testimonials ===== */
.testimonials {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-light);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border);
    position: relative;
}

.quote-mark {
    font-size: 80px;
    color: var(--color-primary);
    opacity: 0.2;
    position: absolute;
    top: 10px;
    left: 20px;
    font-family: Georgia, serif;
}

.testimonial-text {
    font-size: 16px;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.author-name {
    font-weight: 700;
    color: var(--color-text);
}

.author-title {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.testimonial-result {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 14px;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

/* ===== Comparison Table ===== */
.comparison {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg);
}

.comparison-table {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

thead {
    background-color: var(--color-bg-light);
}

th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 700;
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-border);
}

td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}

tr:last-child td {
    border-bottom: none;
}

.check {
    color: var(--color-primary);
}

.x {
    color: #ff6b6b;
}

.warn {
    color: #ffa500;
}

/* ===== FAQ Section ===== */
.faq {
    padding: var(--spacing-3xl) 0;
    background-color: var(--color-bg-light);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.faq-item {
    background-color: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--color-primary);
}

.faq-item h3 {
    color: var(--color-primary);
    font-size: 18px;
    margin-bottom: var(--spacing-sm);
}

.faq-item p {
    color: var(--color-text-secondary);
    font-size: 14px;
}

/* ===== Final CTA ===== */
.final-cta {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-bg) 0%, #0d1a13 100%);
    position: relative;
    overflow: hidden;
}

.final-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(58, 181, 115, 0.15) 0%, transparent 70%);
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: 18px;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.cta-features {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    color: var(--color-text-secondary);
    font-size: 14px;
    margin-bottom: var(--spacing-md);
}

.contact-info {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.contact-info a {
    color: var(--color-primary);
    text-decoration: underline;
}

/* ===== Footer ===== */
.footer {
    background-color: var(--color-bg-light);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-col h4 {
    color: var(--color-primary);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--spacing-md);
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-col ul li a {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.footer-col ul li a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-bottom p {
    color: var(--color-text-secondary);
    font-size: 14px;
}

.trust-badges {
    display: flex;
    gap: var(--spacing-md);
    font-size: 12px;
    color: var(--color-text-secondary);
}

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .hero-visual {
        order: -1;
    }

    .problem-solution .container {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: rgba(0, 0, 0, 0.98);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: 0;
        border-top: 1px solid var(--color-border);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-links a {
        padding: var(--spacing-md) 0;
        border-bottom: 1px solid var(--color-border);
    }

    .nav-links a:last-child {
        border-bottom: none;
        margin-top: var(--spacing-md);
    }

    .nav-wrapper {
        position: relative;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .chat-demo {
        max-width: 100%;
        margin: 0 auto;
    }

    .hero-visual {
        display: flex;
        justify-content: center;
        width: 100%;
    }

    .section-title {
        padding: 0 var(--spacing-sm);
    }

    .section-subtitle {
        padding: 0 var(--spacing-sm);
    }
}

@media (max-width: 640px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    .faq-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-lg);
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .section-title {
        font-size: 28px;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .comparison-table {
        overflow-x: auto;
    }

    .comparison-table table {
        min-width: 500px;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 28px;
    }

    .btn-large {
        padding: 14px 28px;
        font-size: 15px;
    }

    .hero-text {
        text-align: center;
    }

    .hero-buttons {
        align-items: center;
    }

    .solution-content {
        text-align: center;
    }

    .solution-list {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .solution-item {
        justify-content: center;
    }

    .problem-list {
        align-items: center;
    }

    .problem-item {
        justify-content: center;
        text-align: center;
    }

    .step-card {
        text-align: center;
    }

    .feature-card {
        text-align: center;
    }

    .testimonial-card {
        text-align: center;
    }

    .faq-item {
        text-align: left;
    }

    table {
        font-size: 13px;
    }

    th, td {
        padding: 10px 8px;
    }
}

/* ===== Animations ===== */
@media (prefers-reduced-motion: no-preference) {
    .stat-item, .feature-card, .step-card, .testimonial-card, .faq-item {
        opacity: 0;
        animation: fadeInUp 0.6s ease-out forwards;
    }

    .stat-item:nth-child(1) { animation-delay: 0.1s; }
    .stat-item:nth-child(2) { animation-delay: 0.2s; }
    .stat-item:nth-child(3) { animation-delay: 0.3s; }
    .stat-item:nth-child(4) { animation-delay: 0.4s; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}