/* ============================================
   ECO MANAGEMENT SYSTEM - MAIN STYLESHEET
   Color Scheme: Green, White, Light Blue
   ============================================ */

/* ===== ROOT & GLOBAL STYLES ===== */
:root {
    /* Light Theme Colors */
    --primary-green: #27ae60;
    --dark-green: #1e8449;
    --light-blue: #d6eaf8;
    --light-green: #d5f4e6;
    --white: #ffffff;
    --dark-gray: #333333;
    --light-gray: #f5f5f5;
    --border-color: #bdc3c7;
    --text-color: #333333;
    --bg-color: #ffffff;
    --card-bg: #ffffff;
    --navbar-bg: #068c3e;
    --section-bg: #f5f5f5;
}

/* Dark Theme */
body.dark-theme {
    --primary-green: #2ecc71;
    --dark-green: #27ae60;
    --text-color: #e0e0e0;
    --bg-color: #1a1a1a;
    --card-bg: #2d2d2d;
    --navbar-bg: #0d3d1a;
    --section-bg: #242424;
    --border-color: #444444;
    --dark-gray: #e0e0e0;
    --light-gray: #2d2d2d;
}

html.dark-theme {
    color-scheme: dark;
}

html.dark-theme body {
    background-color: var(--bg-color);
    color: var(--text-color);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    color: var(--dark-green);
    margin-bottom: 1rem;
    font-weight: bold;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: var(--dark-gray);
}

/* ===== NAVBAR STYLES ===== */
.navbar {
    background-color: var(--navbar-bg);
    padding: 0.5rem 1rem;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;  
}

.navbar-container {
    max-width: 100%;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.navbar-brand {
    color: var(--white);
    font-size: 1.8rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.navbar-brand::before {
    content: "♻️";
    font-size: 2rem;
}

.navbar-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.theme-toggle, .language-select {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.theme-toggle:hover, .language-select:hover {
    background-color: rgba(255, 255, 255, 0.3);
}



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

.nav-links a {
    color: var(--white);
    font-weight: 500;
    transition: opacity 0.3s ease;
}

.nav-links a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.nav-links a.active {
    padding-bottom: 0.3rem;
    border-bottom: 3px solid var(--white);
}
.Login-btn {
    background-color: var(--primary-green);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    border-radius: 5px;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}
/* ===== HERO SECTION ===== */
.hero {
    background: linear-gradient(135deg, var(--primary-green) 0%, var(--dark-green) 100%);
    color: var(--white);
    padding: 6rem 2rem;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
}

.hero-content {
    max-width: 850px;
}

.hero h1 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 3.5rem;
}

.hero p {
    color: var(--light-gray);
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

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

/* ===== BUTTONS ===== */
.btn {
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    text-align: center;
}

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

.btn-primary:hover {
    background-color: var(--dark-green);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background-color: var(--light-blue);
    color: var(--dark-green);
}



.btn-light {
    background-color: var(--light-green);
    color: var(--dark-green);
}

.btn-light:hover {
    background-color: var(--primary-green);
    color: var(--white);
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 4rem 2rem;
    background-color: transparent;
}

html.dark-theme .section {
    background-color: var(--section-bg) !important;
}

html.dark-theme .section:nth-child(even) {
    background-color: #1f1f1f;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    font-size: 2.5rem;
    color: var(--primary-green);
}

/* ===== CARDS ===== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-green);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.card h3 {
    color: var(--primary-green);
    margin-bottom: 1rem;
}

.card p {
    color: var(--text-color);
    font-size: 0.95rem;
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: bold;
    color: var(--primary-green);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    font-family: Arial, sans-serif;
    transition: border-color 0.3s ease;
    background-color: var(--card-bg);
    color: var(--text-color);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-green);
    box-shadow: 0 0 5px rgba(39, 174, 96, 0.3);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.form-section {
    background: var(--light-green);
    padding: 2rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

/* ===== SUCCESS & ERROR MESSAGES ===== */
.error {
    color: #e74c3c;
    font-size: 0.9rem;
    margin-top: 0.3rem;
    display: none;
}

.error.show {
    display: block;
}

.success-message {
    background-color: var(--light-green);
    color: var(--dark-green);
    padding: 1rem;
    border-radius: 5px;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary-green);
    display: none;
}

.success-message.show {
    display: block;
}

html.dark-theme .success-message {
    background-color: #2d4a3d;
    color: #a8d5ba;
}

/* ===== INFO SECTION ===== */
.info-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.info-box {
    background: var(--light-blue);
    padding: 2rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-green);
    color: var(--text-color);
}

body.dark-theme .info-box {
    background: #2d4a3d;
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--dark-green);
    color: var(--white);
    text-align: center;
    margin-top: auto;
    transition: background-color 0.3s ease;
}

html.dark-theme .footer {
    background-color: #000;
}

.footer p {
    color: var(--white);
    margin: 0.5rem 0;
    border-top: 1px solid rgba(255,255,255,0.3);
    padding-top: 1rem;
    margin-top: 1rem;
}

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

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--white);
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

/* ===== MAIN LAYOUT ===== */
html, body {
    height: 100%;
}

body {
    display: flex;
    flex-direction: column;
}

.content {
    flex: 1;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .navbar-container {
        flex-direction: column;
        gap: 1rem;
    }

    .navbar-controls {
        width: 100%;
        justify-content: center;
    }

    .nav-links {
        gap: 1rem;
        flex-wrap: wrap;
        width: 100%;
        justify-content: center;
    }

    .hero {
        padding: 3rem 1rem;
        min-height: auto;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

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

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .section-title {
        font-size: 2rem;
    }

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .info-section {
        grid-template-columns: 1fr;
    }

    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .navbar-brand {
        font-size: 1.3rem;
    }

    .nav-links {
        gap: 0.5rem;
    }

    nav a {
        font-size: 0.9rem;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .btn {
        padding: 0.6rem 1.5rem;
        font-size: 0.9rem;
    }
}

/* ===== 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; }

.pt-1 { padding-top: 1rem; }
.pt-2 { padding-top: 2rem; }

.pb-1 { padding-bottom: 1rem; }
.pb-2 { padding-bottom: 2rem; }

.hidden {
    display: none;
}

.visible {
    display: block;
}