/* ============================================================
   MemoryKeep E.N.G.R.A.M. — Design System
   Bright, warm, floral theme from Theme.png
   ============================================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700;800;900&family=Montserrat:wght@300;400;500;600;700;800&display=swap');

/* ── Design Tokens ── */
:root {
    /* Brand palette from Theme.png */
    --cyan: #0cc0df;
    --deep-teal: #159cb4;
    --golden: #ffde59;
    --coral: #ff8457;
    --mint: #d2ffaa;

    /* Backgrounds — gradient base */
    --bg-primary: transparent;
    --bg-secondary: rgba(255, 255, 255, 0.15);
    --bg-card: rgba(255, 255, 255, 0.35);
    --bg-card-hover: rgba(255, 255, 255, 0.5);
    --bg-glass: rgba(255, 255, 255, 0.4);
    --bg-dark: #0e3d4a;
    --bg-dark-card: #12505f;

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #0cc0df 0%, #8be4f0 30%, #f8fcfd 60%, #ffde59 100%);
    --gradient-primary: linear-gradient(135deg, #0cc0df, #159cb4);
    --gradient-warm: linear-gradient(135deg, #ff8457, #ffde59);
    --gradient-fresh: linear-gradient(135deg, #0cc0df, #d2ffaa);
    --gradient-sunset: linear-gradient(135deg, #ff8457, #ffde59, #d2ffaa);

    /* Text */
    --text-primary: #1a2e35;
    --text-secondary: #4a6d78;
    --text-muted: #7a9ba8;
    --text-accent: #159cb4;
    --text-on-dark: #f0f9fb;

    /* Borders */
    --border-subtle: rgba(12, 192, 223, 0.12);
    --border-accent: rgba(12, 192, 223, 0.3);

    /* Shadows */
    --shadow-card: 0 4px 24px rgba(12, 192, 223, 0.1);
    --shadow-glow: 0 0 40px rgba(12, 192, 223, 0.12);
    --shadow-button: 0 4px 16px rgba(21, 156, 180, 0.25);
    --shadow-warm: 0 4px 16px rgba(255, 132, 87, 0.2);

    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Montserrat', -apple-system, sans-serif;

    /* Spacing */
    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 30px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── Reset ── */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background: linear-gradient(135deg, #0cc0df 0%, #6dd8e8 25%, #b8ecce 50%, #f0e88a 75%, #ffde59 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
}

a {
    color: var(--text-accent);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--coral);
}

/* ── Navigation ── */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 2rem;
    background: rgba(12, 192, 223, 0.25);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition-smooth);
}

.navbar-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 0.5px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: var(--shadow-button);
    color: white;
}

.logo span {
    color: var(--deep-teal);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.nav-links a:hover {
    color: var(--deep-teal);
}

.nav-cta {
    padding: 0.55rem 1.35rem;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
    color: white !important;
    font-weight: 700;
    box-shadow: var(--shadow-button);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(21, 156, 180, 0.35);
    color: white !important;
}

/* ── Hero Section ── */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    position: relative;
    overflow: hidden;
    padding: 6rem 2rem 4rem;
}

.hero::before {
    content: '';
    position: absolute;
    top: -10%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 222, 89, 0.3), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: float-glow 10s ease-in-out infinite;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: -15%;
    left: -5%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(12, 192, 223, 0.2), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    animation: float-glow 8s ease-in-out infinite reverse;
}

@keyframes float-glow {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.6;
    }

    50% {
        transform: translate(20px, -20px) scale(1.1);
        opacity: 0.9;
    }
}

/* Decorative flowers */
.hero-flower {
    position: absolute;
    font-size: 4rem;
    opacity: 0.15;
    pointer-events: none;
    animation: float-flower 12s ease-in-out infinite;
}

.hero-flower:nth-child(1) {
    top: 15%;
    left: 8%;
    animation-delay: 0s;
}

.hero-flower:nth-child(2) {
    top: 60%;
    right: 10%;
    animation-delay: -3s;
    font-size: 3rem;
}

.hero-flower:nth-child(3) {
    bottom: 20%;
    left: 15%;
    animation-delay: -6s;
    font-size: 5rem;
}

@keyframes float-flower {

    0%,
    100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-15px) rotate(10deg);
    }
}

.hero-content {
    max-width: 800px;
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 1.1rem;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-accent);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--deep-teal);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.6s ease;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4.2rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    animation: fadeInUp 0.6s ease 0.1s both;
}

.hero h1 .gradient-text {
    background: linear-gradient(135deg, var(--deep-teal), var(--coral));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-family: var(--font-body);
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 580px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
    font-weight: 400;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    animation: fadeInUp 0.6s ease 0.3s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Buttons ── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.85rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    letter-spacing: 0.3px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-button);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(21, 156, 180, 0.35);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.8);
    color: var(--deep-teal);
    border: 2px solid var(--border-accent);
    backdrop-filter: blur(8px);
}

.btn-secondary:hover {
    background: white;
    border-color: var(--deep-teal);
    transform: translateY(-2px);
}

.btn-warm {
    background: var(--gradient-warm);
    color: white;
    box-shadow: var(--shadow-warm);
}

.btn-warm:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 132, 87, 0.3);
}

/* ── Sections ── */
.section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: 2.3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* ── Feature Cards ── */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all var(--transition-smooth);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-sunset);
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.feature-card:hover {
    background: rgba(255, 255, 255, 0.55);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin-bottom: 1.25rem;
}

.feature-card:nth-child(1) .feature-icon {
    background: rgba(12, 192, 223, 0.12);
}

.feature-card:nth-child(2) .feature-icon {
    background: rgba(255, 132, 87, 0.12);
}

.feature-card:nth-child(3) .feature-icon {
    background: rgba(21, 156, 180, 0.12);
}

.feature-card:nth-child(4) .feature-icon {
    background: rgba(255, 222, 89, 0.15);
}

.feature-card:nth-child(5) .feature-icon {
    background: rgba(210, 255, 170, 0.2);
}

.feature-card:nth-child(6) .feature-icon {
    background: rgba(12, 192, 223, 0.12);
}

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ── Architecture Diagram Section ── */
.architecture {
    background: var(--bg-dark);
    border-radius: var(--radius-xl);
    padding: 3rem;
    margin-top: 2rem;
    border: 1px solid rgba(12, 192, 223, 0.2);
}

.arch-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 2rem 0;
}

.arch-node {
    background: var(--bg-dark-card);
    border: 1px solid rgba(12, 192, 223, 0.25);
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    text-align: center;
    min-width: 140px;
    transition: all var(--transition-smooth);
    color: var(--text-on-dark);
}

.arch-node:hover {
    transform: scale(1.05);
    border-color: var(--cyan);
    box-shadow: 0 0 20px rgba(12, 192, 223, 0.2);
}

.arch-node .icon {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.arch-node .label {
    font-size: 0.85rem;
    font-weight: 700;
    font-family: var(--font-body);
}

.arch-node .sublabel {
    font-size: 0.75rem;
    color: rgba(240, 249, 251, 0.6);
}

.arch-arrow {
    color: var(--golden);
    font-size: 1.5rem;
    opacity: 0.7;
}

/* ── Stats Bar ── */
.stats-bar {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    padding: 3rem 0;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--deep-teal), var(--coral));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
    font-weight: 500;
}

/* ── CTA Section ── */
.cta-section {
    text-align: center;
    padding: 6rem 2rem;
    position: relative;
    background: rgba(255, 255, 255, 0.1);
}

.cta-section::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: radial-gradient(ellipse, rgba(255, 255, 255, 0.15), transparent);
    pointer-events: none;
}

.cta-section h2 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.cta-section p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* ── Footer ── */
.footer {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding: 2rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.85rem;
    background: rgba(0, 0, 0, 0.05);
}

.footer a {
    color: var(--text-secondary);
    font-weight: 600;
}

/* ── E.N.G.R.A.M. Widget Styles ── */
.engram-widget-bubble {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 62px;
    height: 62px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 24px rgba(21, 156, 180, 0.35);
    z-index: 1000;
    transition: all var(--transition-spring);
    animation: widget-pulse 3s ease-in-out infinite;
}

.engram-widget-bubble:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 32px rgba(21, 156, 180, 0.45);
}

@keyframes widget-pulse {

    0%,
    100% {
        box-shadow: 0 4px 24px rgba(21, 156, 180, 0.35);
    }

    50% {
        box-shadow: 0 4px 32px rgba(12, 192, 223, 0.5);
    }
}

.engram-widget-bubble .icon {
    font-size: 1.5rem;
    color: white;
}

.engram-widget-window {
    position: fixed;
    bottom: 96px;
    right: 24px;
    width: 400px;
    height: 560px;
    background: linear-gradient(160deg, #e6f9fc, #f5f0d0);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.2);
    z-index: 1001;
    display: none;
    flex-direction: column;
    overflow: hidden;
    animation: widgetOpen 0.3s var(--transition-spring);
}

.engram-widget-window.open {
    display: flex;
}

@keyframes widgetOpen {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.widget-header {
    padding: 1rem 1.25rem;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: white;
}

.widget-avatar {
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    font-family: var(--font-heading);
}

.widget-info h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 1px;
}

.widget-info .status {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.widget-info .status::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--mint);
    border-radius: 50%;
}

.widget-close {
    margin-left: auto;
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.7);
    cursor: pointer;
    font-size: 1.25rem;
    padding: 0.25rem;
    transition: color var(--transition-fast);
}

.widget-close:hover {
    color: white;
}

.widget-messages {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background: transparent;
}

.widget-messages::-webkit-scrollbar {
    width: 4px;
}

.widget-messages::-webkit-scrollbar-thumb {
    background: var(--border-accent);
    border-radius: 4px;
}

.widget-msg {
    max-width: 85%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    line-height: 1.5;
    animation: msgFadeIn 0.3s ease;
}

@keyframes msgFadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.widget-msg.assistant {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.5);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
    color: var(--text-primary);
}

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

.widget-msg.typing {
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.5);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.typing-dots {
    display: flex;
    gap: 4px;
    padding: 4px 0;
}

.typing-dots span {
    width: 6px;
    height: 6px;
    background: var(--deep-teal);
    border-radius: 50%;
    animation: typingBounce 1.4s ease-in-out infinite;
}

.typing-dots span:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dots span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingBounce {

    0%,
    60%,
    100% {
        transform: translateY(0);
    }

    30% {
        transform: translateY(-6px);
    }
}

.widget-input {
    padding: 0.75rem 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.3);
    display: flex;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.4);
}

.widget-input input {
    flex: 1;
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-sm);
    padding: 0.6rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    outline: none;
    transition: border-color var(--transition-fast);
}

.widget-input input::placeholder {
    color: var(--text-muted);
}

.widget-input input:focus {
    border-color: var(--cyan);
}

.widget-input button {
    background: var(--gradient-primary);
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.6rem 1rem;
    color: white;
    cursor: pointer;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

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

.widget-input button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

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

    .hero h1 {
        font-size: 2.2rem;
    }

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

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

    .arch-flow {
        flex-direction: column;
    }

    .arch-arrow {
        transform: rotate(90deg);
    }

    .engram-widget-window {
        width: calc(100vw - 32px);
        height: calc(100vh - 120px);
        right: 16px;
        bottom: 88px;
    }

    .stats-bar {
        grid-template-columns: repeat(2, 1fr);
    }
}