/* ========================================
   DailyCal - Main Stylesheet
   Dark Theme with Neon Lime Accent (#D3FF56)
   ======================================== */

/* CSS Variables */
:root {
    --primary-color: #D3FF56;
    --bg-black: #000000;
    --bg-dark: #0A0A0A;
    --bg-card: #111111;
    --text-white: #FFFFFF;
    --text-grey: #A1A1A1;
    --border-color: #222222;
    --border-light: #333333;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    --glow: 0 0 20px rgba(211, 255, 86, 0.4);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    background-color: var(--bg-black);
    color: var(--text-grey);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ========================================
   Header & Navigation
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow);
}

.navbar {
    padding: 1rem 0;
}

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

.nav-left {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.logo-only {
    height: 50px;
    width: 50px;
    object-fit: contain;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    color: var(--text-white);
}

.logo-accent {
    color: var(--primary-color);
}

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

.nav-link {
    color: var(--text-grey);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

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

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

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

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-icon {
    font-size: 0.7rem;
    margin-left: 0.3rem;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    list-style: none;
    box-shadow: var(--shadow);
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    padding: 0;
}

.dropdown-menu a {
    display: block;
    padding: 0.75rem 1.5rem;
    color: var(--text-grey);
    transition: var(--transition);
}

.dropdown-menu a:hover {
    background-color: var(--bg-dark);
    color: var(--primary-color);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 30px;
    height: 3px;
    background-color: var(--text-white);
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--text-white);
    border: 2px solid var(--primary-color);
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-glow {
    box-shadow: var(--glow);
}

.btn-icon {
    width: 24px;
    height: 24px;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-shape {
    position: absolute;
    background: radial-gradient(circle, rgba(211, 255, 86, 0.15), transparent);
    border-radius: 50%;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 400px;
    height: 400px;
    top: 10%;
    right: 10%;
    animation-delay: 0s;
}

.shape-2 {
    width: 300px;
    height: 300px;
    bottom: 20%;
    left: 5%;
    animation-delay: 5s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    top: 50%;
    left: 50%;
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.3;
    }
    50% {
        transform: translate(50px, 50px) scale(1.1);
        opacity: 0.6;
    }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-text {
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-white);
    margin-bottom: 1.5rem;
}

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

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-grey);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-screenshots {
    display: flex;
    gap: 2rem;
    align-items: center;
    justify-content: center;
}

.app-screenshot {
    animation: float 3s ease-in-out infinite;
    transition: var(--transition);
}

.app-screenshot:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 25px 70px rgba(211, 255, 86, 0.4)) !important;
}

.animate-float-delay {
    animation: float 3s ease-in-out infinite;
    animation-delay: 0.5s;
}

/* Phone Mockup */
.phone-mockup {
    width: 300px;
    height: 600px;
    background: linear-gradient(135deg, #1a1a1a, #0a0a0a);
    border-radius: 40px;
    padding: 15px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8), 0 0 40px rgba(211, 255, 86, 0.2);
    position: relative;
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 25px;
    background-color: #000;
    border-radius: 0 0 20px 20px;
    z-index: 2;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #0a0a0a, #111111);
    border-radius: 30px;
    overflow: hidden;
    position: relative;
}

.app-preview {
    padding: 50px 20px 20px;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
}

.preview-time {
    color: var(--text-white);
    font-weight: 600;
}

.preview-indicators {
    display: flex;
    gap: 5px;
    font-size: 0.8rem;
}

.preview-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.preview-content h3 {
    color: var(--text-white);
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.calorie-ring {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: conic-gradient(var(--primary-color) 0deg 252deg, var(--border-color) 252deg 360deg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    position: relative;
}

.calorie-ring::before {
    content: '';
    position: absolute;
    width: 140px;
    height: 140px;
    background-color: var(--bg-dark);
    border-radius: 50%;
}

.ring-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
    z-index: 1;
}

.calories {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-color);
}

.label {
    color: var(--text-grey);
    font-size: 0.9rem;
}

.macro-stats {
    display: flex;
    gap: 2rem;
}

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

.stat-label {
    font-size: 0.75rem;
    color: var(--text-grey);
    margin-bottom: 0.3rem;
}

.stat-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-white);
}

/* ========================================
   Section Styles
   ======================================== */
section {
    padding: 5rem 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-grey);
}

/* ========================================
   Features Section
   ======================================== */
.features {
    background-color: var(--bg-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition);
    cursor: pointer;
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, rgba(211, 255, 86, 0.1), transparent);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--text-grey);
    line-height: 1.8;
}

/* ========================================
   How It Works Section
   ======================================== */
.how-it-works {
    background-color: var(--bg-black);
}

.steps-container {
    max-width: 800px;
    margin: 0 auto;
}

.step {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    min-width: 100px;
    text-align: center;
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.step-description {
    color: var(--text-grey);
}

.step-line {
    width: 2px;
    height: 60px;
    background: linear-gradient(to bottom, var(--primary-color), transparent);
    margin-left: 50px;
}

/* ========================================
   Screenshots Section
   ======================================== */
.screenshots {
    background-color: var(--bg-dark);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    justify-items: center;
}

.screenshot-item {
    display: flex;
    justify-content: center;
}

.screenshot-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.screenshot-img {
    max-width: 280px;
    height: auto;
    border-radius: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8), 0 0 40px rgba(211, 255, 86, 0.15);
    transition: var(--transition);
    filter: brightness(1);
}

.screenshot-img:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.9), 0 0 60px rgba(211, 255, 86, 0.3);
    filter: brightness(1.1);
}

.screenshot-label {
    background: linear-gradient(135deg, rgba(211, 255, 86, 0.2), rgba(211, 255, 86, 0.05));
    color: var(--primary-color);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    border: 1px solid rgba(211, 255, 86, 0.3);
    backdrop-filter: blur(10px);
}

/* ========================================
   Testimonials Section
   ======================================== */
.testimonials {
    background-color: var(--bg-black);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: var(--transition);
}

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

.stars {
    color: var(--primary-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.testimonial-text {
    color: var(--text-grey);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), #a8cc45);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--bg-black);
}

.author-info {
    flex: 1;
}

.author-name {
    color: var(--text-white);
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.author-title {
    color: var(--text-grey);
    font-size: 0.85rem;
}

/* ========================================
   CTA Banner
   ======================================== */
.cta-banner {
    background: linear-gradient(135deg, rgba(211, 255, 86, 0.1), transparent);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    padding: 5rem 0;
}

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

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-white);
    margin-bottom: 1rem;
}

.cta-subtitle {
    font-size: 1.1rem;
    color: var(--text-grey);
    margin-bottom: 2rem;
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background-color: var(--bg-dark);
    padding: 3rem 0 1rem;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 800;
}

.footer-description {
    color: var(--text-grey);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-grey);
    transition: var(--transition);
}

.social-link:hover {
    background-color: var(--primary-color);
    color: var(--bg-black);
    border-color: var(--primary-color);
}

.footer-title {
    color: var(--text-white);
    font-weight: 600;
    font-size: 1.1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-grey);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-grey);
}

/* ========================================
   Back to Top Button
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--bg-black);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--glow);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }