/* ================================
   PERFUME PAL - TECH UI SYSTEM
   ================================ */

:root {
    /* Color Palette - Green Metallic Tech */
    --primary: #06ffa5;
    --primary-dark: #04cc84;
    --secondary: #00ff88;
    --accent: #39ff14;
    --success: #06ffa5;
    --danger: #ff3366;
    
    /* Neutrals - Dark Metal */
    --bg-main: #0a0e1a;
    --bg-card: #12182b;
    --bg-elevated: #1a2236;
    --bg-input: #0f1523;
    
    /* Metallics */
    --metal-light: #c0c5d0;
    --metal-med: #8892a6;
    --metal-dark: #4a5568;
    
    /* Borders & Glows */
    --border-color: #2a3548;
    --glow-primary: rgba(6, 255, 165, 0.5);
    --glow-accent: rgba(57, 255, 20, 0.4);
    
    /* Typography */
    --font-primary: 'Orbitron', sans-serif;
    --font-secondary: 'Rajdhani', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-med: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

body {
    font-family: var(--font-secondary);
    background: var(--bg-main);
    color: var(--metal-light);
    line-height: 1.6;
    overflow-x: hidden;
}

.hidden {
    display: none !important;
}

/* ================================
   INTRO SCREEN
   ================================ */

.intro-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: 
        linear-gradient(135deg, #0a0e1a 0%, #0d1a0f 100%),
        radial-gradient(circle at 50% 50%, rgba(6, 255, 165, 0.15) 0%, transparent 50%);
    overflow: hidden;
}

.tech-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(6, 255, 165, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(6, 255, 165, 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    animation: gridMove 15s linear infinite;
    pointer-events: none;
}

@keyframes gridMove {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(40px, 40px) rotate(1deg); }
}

/* Floating particles effect */
.intro-screen::before {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(6, 255, 165, 0.3), transparent);
    border-radius: 50%;
    top: 20%;
    left: 10%;
    animation: floatParticle1 8s ease-in-out infinite;
    pointer-events: none;
}

.intro-screen::after {
    content: '';
    position: absolute;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(57, 255, 20, 0.2), transparent);
    border-radius: 50%;
    bottom: 20%;
    right: 15%;
    animation: floatParticle2 10s ease-in-out infinite;
    pointer-events: none;
}

@keyframes floatParticle1 {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.3; }
    50% { transform: translate(50px, -50px) scale(1.3); opacity: 0.6; }
}

@keyframes floatParticle2 {
    0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.2; }
    50% { transform: translate(-40px, 60px) scale(1.5); opacity: 0.5; }
}

.intro-content {
    text-align: center;
    z-index: 2;
    padding: var(--spacing-xl);
    max-width: 600px;
}

.logo-container {
    margin-bottom: var(--spacing-xl);
    animation: logoFloat 4s ease-in-out infinite, logoPulse 2s ease-in-out infinite;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-20px) scale(1.05); }
}

@keyframes logoPulse {
    0%, 100% { filter: drop-shadow(0 0 40px var(--glow-primary)) drop-shadow(0 0 80px var(--glow-accent)); }
    50% { filter: drop-shadow(0 0 60px var(--glow-primary)) drop-shadow(0 0 100px var(--glow-accent)); }
}

.intro-logo {
    width: 280px;
    height: 280px;
    transition: var(--transition-med);
}

.intro-logo:hover {
    transform: scale(1.1) rotate(5deg);
    filter: drop-shadow(0 0 80px var(--glow-primary)) brightness(1.2);
}

.intro-title {
    display: none;
}

.intro-subtitle {
    display: none;
    letter-spacing: 0.2em;
    margin-bottom: var(--spacing-xl);
}

.intro-features {
    display: none;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: var(--font-primary);
    font-size: 0.9rem;
    letter-spacing: 0.1em;
    transition: var(--transition-med);
}

.feature-item:hover {
    border-color: var(--primary);
    box-shadow: 0 0 20px var(--glow-primary);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 1.5rem;
}

.enter-btn {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 0.25em;
    padding: 1.2rem 3rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #0a0e1a;
    border: 2px solid var(--primary);
    border-radius: 0;
    clip-path: polygon(15px 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%, 0 15px);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition-med);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-md);
    animation: btnGlow 2s ease-in-out infinite;
    margin-top: var(--spacing-xl);
}

@keyframes btnGlow {
    0%, 100% { box-shadow: 0 0 30px var(--glow-primary), 0 0 60px var(--glow-accent), inset 0 0 20px rgba(6, 255, 165, 0.3); }
    50% { box-shadow: 0 0 50px var(--glow-primary), 0 0 100px var(--glow-accent), inset 0 0 30px rgba(6, 255, 165, 0.5); }
}

.enter-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.5), transparent);
    transition: var(--transition-med);
}

.enter-btn:hover::before {
    left: 100%;
}

.enter-btn:hover {
    box-shadow: 0 0 50px var(--glow-primary), 0 0 100px var(--glow-accent), inset 0 0 30px rgba(255, 255, 255, 0.3);
    transform: translateY(-4px) scale(1.05);
    border-color: var(--accent);
}

.btn-arrow {
    font-size: 1.8rem;
    transition: var(--transition-med);
    animation: arrowBounce 1s ease-in-out infinite;
}

@keyframes arrowBounce {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(8px); }
}

.enter-btn:hover .btn-arrow {
    transform: translateX(12px);
    animation: none;
}

/* ================================
   TOP NAVIGATION
   ================================ */

.top-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 14, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-sm) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 20px rgba(6, 255, 165, 0.1);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    transition: var(--transition-med);
    padding: 0.5rem;
    border-radius: 8px;
}

.nav-logo:hover {
    background: rgba(6, 255, 165, 0.1);
    transform: translateY(-2px);
}

.nav-logo:hover .nav-logo-img {
    filter: drop-shadow(0 0 20px var(--glow-primary));
    transform: scale(1.1);
}

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

.nav-logo-img {
    width: 40px;
    height: 40px;
    filter: drop-shadow(0 0 10px var(--glow-primary));
}

.nav-brand {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--metal-med);
    text-decoration: none;
    padding: var(--spacing-xs) var(--spacing-md);
    border: 1px solid transparent;
    transition: var(--transition-med);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition-med);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* ================================
   SECTIONS
   ================================ */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-lg);
}

.section {
    display: none;
    animation: fadeIn 0.5s ease;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.main-title {
    font-family: var(--font-primary);
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: 0.2em;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    animation: titleGlowGreen 3s ease-in-out infinite;
    position: relative;
}

@keyframes titleGlowGreen {
    0%, 100% { 
        filter: drop-shadow(0 0 15px var(--glow-primary)); 
    }
    50% { 
        filter: drop-shadow(0 0 30px var(--glow-primary)) drop-shadow(0 0 40px var(--glow-accent)); 
    }
}

.main-subtitle {
    font-size: 1.2rem;
    color: var(--metal-med);
    letter-spacing: 0.1em;
}

/* ================================
   FORM STYLES
   ================================ */

.tech-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    clip-path: polygon(20px 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%, 0 20px);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-label {
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.label-icon {
    font-size: 1.2rem;
}

.form-input {
    font-family: var(--font-secondary);
    font-size: 1rem;
    padding: var(--spacing-sm);
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    color: var(--metal-light);
    outline: none;
    transition: var(--transition-med);
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
    position: relative;
}

.form-input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 20px var(--glow-primary), inset 0 0 10px rgba(6, 255, 165, 0.1);
    transform: translateY(-2px);
    background: rgba(6, 255, 165, 0.05);
}

.form-input:hover {
    border-color: rgba(6, 255, 165, 0.5);
    box-shadow: 0 0 10px rgba(6, 255, 165, 0.2);
}

.form-input::placeholder {
    color: var(--metal-dark);
}

select.form-input {
    cursor: pointer;
    background-color: var(--bg-input);
    color: var(--metal-light);
}

select.form-input option {
    background-color: var(--bg-card);
    color: var(--metal-light);
    padding: var(--spacing-sm);
}

select.form-input option:hover,
select.form-input option:focus,
select.form-input option:checked {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: var(--bg-main);
}

textarea.form-input {
    resize: vertical;
    min-height: 80px;
    font-family: var(--font-secondary);
}

/* ================================
   BUTTONS
   ================================ */

.submit-btn {
    font-family: var(--font-primary);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    padding: var(--spacing-md) var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: #0a0e1a;
    border: 2px solid var(--primary);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: var(--transition-med);
    clip-path: polygon(15px 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%, 0 15px);
    width: 100%;
    animation: btnPulse 2s ease-in-out infinite;
}

@keyframes btnPulse {
    0%, 100% { box-shadow: 0 0 20px var(--glow-primary), inset 0 0 10px rgba(6, 255, 165, 0.2); }
    50% { box-shadow: 0 0 40px var(--glow-primary), 0 0 60px var(--glow-accent), inset 0 0 20px rgba(6, 255, 165, 0.4); }
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    animation: none;
}

.submit-btn:not(:disabled):hover {
    box-shadow: 0 0 50px var(--glow-primary), 0 0 80px var(--glow-accent), inset 0 0 30px rgba(255, 255, 255, 0.3);
    transform: translateY(-4px) scale(1.02);
    border-color: var(--accent);
    animation: none;
}

.btn-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: var(--transition-slow);
}

.submit-btn:hover .btn-glow {
    left: 100%;
}

/* ================================
   RESULTS
   ================================ */

.results {
    margin-top: var(--spacing-xl);
}

.results-title {
    font-family: var(--font-primary);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--primary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.recipes-grid {
    display: grid;
    gap: var(--spacing-lg);
}

.recipe-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-xl);
    clip-path: polygon(25px 0, 100% 0, 100% calc(100% - 25px), calc(100% - 25px) 100%, 0 100%, 0 25px);
    transition: var(--transition-med);
    animation: cardSlideIn 0.5s ease;
    position: relative;
    overflow: hidden;
}

@keyframes cardSlideIn {
    from { 
        opacity: 0; 
        transform: translateX(-30px);
    }
    to { 
        opacity: 1; 
        transform: translateX(0);
    }
}

.recipe-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition-med);
}

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

.recipe-card:hover {
    border-color: var(--primary);
    box-shadow: 0 0 35px var(--glow-primary), 0 0 60px rgba(6, 255, 165, 0.2);
    transform: translateY(-5px);
}

.recipe-name {
    font-family: var(--font-primary);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.recipe-description {
    color: var(--metal-med);
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
}

.notes-section {
    margin-bottom: var(--spacing-md);
}

.notes-title {
    font-family: var(--font-primary);
    font-size: 1.1rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: var(--spacing-xs);
}

.notes-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.note-tag {
    padding: 4px 12px;
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--metal-light);
    clip-path: polygon(4px 0, 100% 0, 100% calc(100% - 4px), calc(100% - 4px) 100%, 0 100%, 0 4px);
}

.ingredients-table {
    width: 100%;
    margin-bottom: var(--spacing-md);
    border-collapse: collapse;
}

.ingredients-table th,
.ingredients-table td {
    padding: var(--spacing-sm);
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.ingredients-table th {
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--primary);
}

.ingredients-table tr:hover {
    background: var(--bg-elevated);
}

.instructions-section {
    margin-bottom: var(--spacing-md);
}

.instructions-list {
    list-style: none;
    counter-reset: step-counter;
}

.instructions-list li {
    counter-increment: step-counter;
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-lg);
    position: relative;
}

.instructions-list li::before {
    content: counter(step-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 24px;
    height: 24px;
    background: var(--primary);
    color: var(--bg-main);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 0.8rem;
}

.safety-note {
    padding: var(--spacing-md);
    background: rgba(255, 51, 102, 0.1);
    border-left: 4px solid var(--danger);
    margin-top: var(--spacing-md);
}

/* ================================
   ABOUT SECTION
   ================================ */

.about-content {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-primary);
    font-size: 3rem;
    font-weight: 900;
    letter-spacing: 0.2em;
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

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

.about-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    clip-path: polygon(15px 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%, 0 15px);
    transition: var(--transition-med);
}

.about-card:hover {
    border-color: var(--primary);
    box-shadow: 0 0 20px var(--glow-primary);
    transform: translateY(-5px);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.about-card h3 {
    font-family: var(--font-primary);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.about-card p {
    color: var(--metal-med);
    margin-bottom: var(--spacing-md);
}

.about-card ul,
.about-card ol {
    margin-left: var(--spacing-md);
    color: var(--metal-light);
}

.about-card li {
    margin-bottom: var(--spacing-xs);
}

.tech-stack {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.tech-stack h3 {
    font-family: var(--font-primary);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}

.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
}

.tech-badge {
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    clip-path: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
}

.disclaimer-box {
    background: rgba(255, 51, 102, 0.1);
    border: 1px solid var(--danger);
    padding: var(--spacing-lg);
    clip-path: polygon(15px 0, 100% 0, 100% calc(100% - 15px), calc(100% - 15px) 100%, 0 100%, 0 15px);
}

.disclaimer-box h4 {
    font-family: var(--font-primary);
    color: var(--danger);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.1em;
}

.disclaimer-box p {
    color: var(--metal-med);
}

/* ================================
   FOOTER
   ================================ */

.tech-footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
}

.footer-text {
    font-family: var(--font-primary);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--metal-med);
    margin-bottom: var(--spacing-xs);
}

.footer-copyright {
    font-size: 0.85rem;
    color: var(--metal-dark);
}

/* ================================
   RESPONSIVE
   ================================ */

@media (max-width: 768px) {
    .intro-title {
        font-size: 2.5rem;
        letter-spacing: 0.2em;
    }
    
    .main-title,
    .section-title {
        font-size: 2rem;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        font-size: 0.8rem;
        padding: var(--spacing-xs);
    }
    
    .intro-features {
        flex-direction: column;
    }
}