/* ================================================
   Simple Decisions - Sunset Landing Page
   A tribute to NLP & AI exploration
   ================================================ */

/* CSS Variables */
:root {
    --primary-blue: #1a4a7a;
    --primary-blue-light: #2d7dd2;
    --primary-blue-dark: #0d2840;
    --accent-blue: #4a90c2;
    --accent-cyan: #5bc0de;

    --bg-dark: #0a1929;
    --bg-gradient-start: #0d2137;
    --bg-gradient-end: #061220;

    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);

    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-hover: rgba(255, 255, 255, 0.06);

    --glow-blue: rgba(45, 125, 210, 0.4);
    --glow-cyan: rgba(91, 192, 222, 0.3);

    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;

    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.8s ease;
}

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

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

body {
    font-family: var(--font-secondary);
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    line-height: 1.6;
}

/* ================================================
   Background Animation - Irregular Grid & Rays
   ================================================ */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

/* Irregular Grid Lines */
.irregular-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.grid-line {
    position: absolute;
    background: rgba(45, 125, 210, 0.06);
}

.grid-line.vertical {
    left: var(--pos);
    top: 0;
    width: 1px;
    height: 100%;
}

.grid-line.horizontal {
    top: var(--pos);
    left: 0;
    width: 100%;
    height: 1px;
}

/* Shooting Rays - Vertical and Horizontal */
.rays-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.ray {
    position: absolute;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        rgba(91, 192, 222, 0.4) 20%,
        rgba(45, 125, 210, 0.6) 50%,
        rgba(91, 192, 222, 0.4) 80%,
        transparent 100%
    );
    border-radius: 2px;
    opacity: 0;
}

.ray.vertical {
    left: var(--x);
    top: -100%;
    width: 2px;
    height: 30%;
    animation: rayShootDown var(--duration) ease-in-out infinite;
    animation-delay: var(--delay);
}

.ray.horizontal {
    top: var(--y);
    left: -30%;
    width: 30%;
    height: 2px;
    background: linear-gradient(
        to right,
        transparent 0%,
        rgba(91, 192, 222, 0.4) 20%,
        rgba(45, 125, 210, 0.6) 50%,
        rgba(91, 192, 222, 0.4) 80%,
        transparent 100%
    );
    animation: rayShootRight var(--duration) ease-in-out infinite;
    animation-delay: var(--delay);
}

@keyframes rayShootDown {
    0% {
        top: -30%;
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        top: 130%;
        opacity: 0;
    }
}

@keyframes rayShootRight {
    0% {
        left: -30%;
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        left: 130%;
        opacity: 0;
    }
}

/* ================================================
   Full-Page Word Cloud
   ================================================ */
.word-cloud-fullpage {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    overflow: hidden;
}

.word-cloud-fullpage span {
    position: absolute;
    left: var(--x);
    top: var(--y);
    font-family: var(--font-primary);
    font-size: calc(var(--size) * 1rem);
    font-weight: 500;
    color: var(--accent-blue);
    opacity: var(--opacity);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    white-space: nowrap;
    animation: wordFloat 12s ease-in-out infinite;
    animation-delay: var(--delay);
    user-select: none;
}

@keyframes wordFloat {
    0%, 100% {
        transform: translate(0, 0);
    }
    25% {
        transform: translate(8px, -5px);
    }
    50% {
        transform: translate(-5px, 8px);
    }
    75% {
        transform: translate(5px, 5px);
    }
}

/* ================================================
   Main Container
   ================================================ */
.container {
    position: relative;
    z-index: 10;
    max-width: 1000px;
    margin: 0 auto;
    padding: 60px 24px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* ================================================
   Fade-in Animations
   ================================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

.fade-in-delay-1 {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.2s;
}

.fade-in-delay-2 {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.4s;
}

.fade-in-delay-3 {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.6s;
}

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

/* ================================================
   Logo Section
   ================================================ */
.logo-section {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.logo-image.logo-x-shape {
    width: 150px;
    height: auto;
    filter: drop-shadow(0 0 25px var(--glow-cyan)) brightness(0) invert(1);
}

.logo-text-image {
    height: 28px;
    width: auto;
    filter: brightness(0) invert(1) opacity(0.9);
}

/* ================================================
   Message Section
   ================================================ */
.message-section {
    text-align: center;
    margin-bottom: 40px;
    position: relative;
}

.sunset-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 150, 50, 0.15);
    border: 1px solid rgba(255, 150, 50, 0.3);
    color: #ffb366;
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
}

.sunset-badge i {
    font-size: 1rem;
}

.main-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 25px;
}

.title-line {
    display: block;
}

.title-line.highlight {
    background: linear-gradient(135deg, var(--accent-cyan), var(--primary-blue-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.message-content {
    max-width: 700px;
    margin: 0 auto;
}

.lead-text {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 20px;
    font-weight: 400;
}

.lead-text strong {
    color: var(--accent-cyan);
}

.body-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.tech-highlight {
    color: var(--accent-cyan);
    font-weight: 500;
}

/* ================================================
   Brand Logo Section (between message and team)
   ================================================ */
.brand-logo-section {
    text-align: center;
    margin-bottom: 35px;
    padding: 20px 0;
}

.brand-logo-section .logo-text-image {
    height: 32px;
    width: auto;
    filter: brightness(0) invert(1) opacity(0.85);
}

/* ================================================
   Team Section
   ================================================ */
.team-section {
    margin-bottom: 40px;
}

.section-title {
    font-family: var(--font-primary);
    font-size: 1.4rem;
    font-weight: 500;
    text-align: center;
    margin-bottom: 40px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.title-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.team-card {
    position: relative;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 35px 25px;
    text-align: center;
    text-decoration: none;
    color: inherit;
    overflow: hidden;
    transition: all var(--transition-medium);
    backdrop-filter: blur(10px);
}

.team-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-blue), var(--accent-cyan), var(--primary-blue-light));
    transform: scaleX(0);
    transition: transform var(--transition-medium);
}

.team-card:hover {
    background: var(--card-hover);
    border-color: var(--primary-blue);
    transform: translateY(-5px);
}

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

.card-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, var(--glow-blue) 0%, transparent 70%);
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity var(--transition-medium);
    pointer-events: none;
}

.team-card:hover .card-glow {
    opacity: 0.5;
}

.avatar-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: 20px;
}

.avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--card-border);
    transition: border-color var(--transition-medium);
    filter: grayscale(30%);
}

.team-card:hover .avatar {
    border-color: var(--primary-blue-light);
    filter: grayscale(0%);
}

.avatar-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue-dark), var(--primary-blue));
    font-size: 2.5rem;
    color: var(--text-secondary);
}

.linkedin-badge {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 32px;
    height: 32px;
    background: #0077b5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    color: white;
    border: 3px solid var(--bg-dark);
    transition: transform var(--transition-fast);
}

.team-card:hover .linkedin-badge {
    transform: scale(1.1);
}

.member-info {
    margin-bottom: 20px;
}

.member-name {
    font-family: var(--font-primary);
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.member-role {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.follow-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-blue-light);
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-medium);
}

.team-card:hover .follow-cta {
    opacity: 1;
    transform: translateY(0);
}

.follow-cta i {
    transition: transform var(--transition-fast);
}

.team-card:hover .follow-cta i {
    transform: translateX(5px);
}

/* ================================================
   Footer
   ================================================ */
.footer {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid var(--card-border);
}

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

.copyright i {
    color: #e74c3c;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* ================================================
   Responsive Design
   ================================================ */
@media (max-width: 768px) {
    .container {
        padding: 40px 20px;
    }

    .logo-image.logo-x-shape {
        width: 120px;
    }

    .logo-text-image {
        height: 22px;
    }

    .main-title {
        font-size: clamp(1.6rem, 6vw, 2.4rem);
    }

    .lead-text {
        font-size: 1.1rem;
    }

    .body-text {
        font-size: 1rem;
    }

    .word-cloud-fullpage span {
        font-size: calc(var(--size) * 0.8rem);
    }

    .team-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .section-title {
        font-size: 1.2rem;
        flex-direction: column;
        gap: 15px;
    }

    .follow-cta {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 480px) {
    .logo-image.logo-x-shape {
        width: 100px;
    }

    .logo-text-image {
        height: 18px;
    }

    .sunset-badge {
        font-size: 0.75rem;
        padding: 6px 14px;
    }

    .avatar {
        width: 80px;
        height: 80px;
    }

    .linkedin-badge {
        width: 28px;
        height: 28px;
        font-size: 0.8rem;
    }

    .word-cloud-fullpage span {
        font-size: calc(var(--size) * 0.6rem);
    }
}

/* ================================================
   Accessibility
   ================================================ */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus states for keyboard navigation */
.team-card:focus {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 4px;
}

.team-card:focus-visible {
    outline: 2px solid var(--accent-cyan);
    outline-offset: 4px;
}