/**
 * CSS VARIABLES FOR THEMES
 */
:root {
 --bg-color: #F8F9FA;
 --text-color: #2C3E50;
 --grid-line: rgba(52, 73, 94, 0.08);
 --text-shadow: hsla(0, 0%, 100%, .7);
 --card-bg: rgba(255, 255, 255, 0.95);
 --border-color: #A8D5BA;
 --accent-color: #27AE60;
 --link-color: #3498DB;
 --link-hover: #2980B9;
 --button-bg: linear-gradient(135deg, #34495E, #2C3E50);
 --button-hover: linear-gradient(135deg, #2C3E50, #34495E);
 --footer-color: #2980B9;
 --hover-bg: rgba(168, 213, 186, 0.15);
 --shadow-color: rgba(39, 174, 96, 0.25);
 --shine-bg: rgba(168, 213, 186, 0.2);
 --glow-color: rgba(39, 174, 96, 0.5);
 /* Premium enhancements */
 --premium-shadow: rgba(39, 174, 96, 0.15);
 --premium-glow: rgba(39, 174, 96, 0.1);
 --premium-border: rgba(168, 213, 186, 0.3);
 /* Background logo */
 --bg-logo-opacity: 0.3;
}
:root.dark-mode {
 --bg-color: #121212;
 --text-color: #E8E8E8;
 --grid-line: rgba(255,255,255,0.06);
 --text-shadow: hsla(0, 0%, 0%, .7);
 --card-bg: rgba(30, 30, 30, 0.95);
 --border-color: #4A90E2;
 --accent-color: #4CAF50;
 --link-color: #81D4FA;
 --link-hover: #4FC3F7;
 --button-bg: linear-gradient(135deg, #37474F, #263238);
 --button-hover: linear-gradient(135deg, #263238, #37474F);
 --footer-color: #81D4FA;
 --hover-bg: rgba(74, 144, 226, 0.2);
 --shadow-color: rgba(76, 175, 80, 0.3);
 --shine-bg: rgba(74, 144, 226, 0.15);
 --glow-color: rgba(76, 175, 80, 0.6);
 /* Premium enhancements */
 --premium-shadow: rgba(76, 175, 80, 0.15);
 --premium-glow: rgba(76, 175, 80, 0.1);
 --premium-border: rgba(74, 144, 226, 0.3);
 /* Background logo */
 --bg-logo-opacity: 0.4;
}
/**
 * USE BORDER BOX
 */
*, *:before, *:after {
 box-sizing: border-box;
}
/**
 * PAGE LAYOUT
 */
html {
 scroll-behavior: smooth;
}
body {
 background-attachment: fixed;
 background-color: var(--bg-color);
 background-image:
 linear-gradient(var(--grid-line) 1px, transparent 1px),
 linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
 background-size: 10px 10px;
 color: var(--text-color);
 font-family: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
 font-size: clamp(14px, 2vw, 16px);
 line-height: 1.5;
 margin: 0;
 padding: clamp(10px, 2vw, 15px) 0;
 text-shadow: 0 1px var(--text-shadow);
 text-rendering: optimizeLegibility;
 min-height: 100vh;
 opacity: 1 !important;
 overflow-x: hidden;
 transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
 position: relative;
}
body.loaded {
 animation: fadeInGlow 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
@keyframes fadeInGlow {
 from { opacity: 0; transform: translateY(20px); filter: blur(5px); }
 to { opacity: 1; transform: translateY(0); filter: blur(0); }
}
/* Enhanced: Floating particles background animation with more depth and premium subtlety */
body::before {
 content: '';
 position: fixed;
 top: 0;
 left: 0;
 width: 100%;
 height: 100%;
 pointer-events: none;
 z-index: -1;
 background-image:
 radial-gradient(2px 2px at 20px 30px, var(--accent-color), transparent),
 radial-gradient(2px 2px at 40px 70px, rgba(124,179,66,0.6), transparent),
 radial-gradient(1px 1px at 90px 40px, #7cb342, transparent),
 radial-gradient(1px 1px at 130px 80px, rgba(70,136,71,0.4), transparent),
 radial-gradient(2px 2px at 160px 30px, var(--accent-color), transparent),
 radial-gradient(3px 3px at 200px 50px, rgba(168,213,186,0.5), transparent);
 background-repeat: repeat;
 background-size: 250px 120px;
 animation: floatParticles 25s linear infinite, subtleGlow 3s ease-in-out infinite alternate;
 filter: drop-shadow(0 0 10px var(--premium-glow));
}
@keyframes floatParticles {
 from { transform: translateY(0px) rotate(0deg); }
 to { transform: translateY(-120px) rotate(360deg); }
}
@keyframes subtleGlow {
 from { opacity: 0.8; }
 to { opacity: 1; }
}
:root.dark-mode body::before {
 background-image:
 radial-gradient(2px 2px at 20px 30px, var(--accent-color), transparent),
 radial-gradient(2px 2px at 40px 70px, rgba(124,179,66,0.4), transparent),
 radial-gradient(1px 1px at 90px 40px, #4a8f28, transparent),
 radial-gradient(1px 1px at 130px 80px, rgba(74,143,40,0.3), transparent),
 radial-gradient(2px 2px at 160px 30px, var(--accent-color), transparent),
 radial-gradient(3px 3px at 200px 50px, rgba(74,144,226,0.4), transparent);
}
.container {
 margin: 0 auto;
 max-width: min(100%, 750px);
 padding: 0 clamp(10px, 3vw, 20px);
 display: flex;
 flex-direction: column;
 min-height: 100vh;
 position: relative;
 z-index: 1;
}
/**
 * BACKGROUND LOGOS
 */
#background-logos {
 position: fixed;
 top: 0;
 left: 0;
 width: 100%;
 height: 100%;
 pointer-events: none;
 z-index: -2;
 animation: logoCycle 7s ease-in-out infinite;
}
.bg-logo {
 position: absolute;
 width: clamp(40px, 8vw, 60px);
 height: auto;
 opacity: var(--bg-logo-opacity);
 filter: drop-shadow(0 2px 4px var(--premium-shadow));
 animation: gentleFloat 3s ease-in-out infinite alternate;
 border-radius: 8px;
}
#background-logos .bg-logo:nth-child(1) { top: 10%; left: 10%; transform: rotate(0deg); }
#background-logos .bg-logo:nth-child(2) { top: 20%; right: 15%; transform: rotate(45deg); }
#background-logos .bg-logo:nth-child(3) { top: 60%; left: 20%; transform: rotate(90deg); }
#background-logos .bg-logo:nth-child(4) { bottom: 30%; right: 10%; transform: rotate(135deg); }
#background-logos .bg-logo:nth-child(5) { top: 40%; left: 70%; transform: rotate(180deg); }
#background-logos .bg-logo:nth-child(6) { bottom: 20%; left: 60%; transform: rotate(225deg); }
@keyframes logoCycle {
 0%, 71% { opacity: var(--bg-logo-opacity); }
 72%, 100% { opacity: 0; }
}
@keyframes gentleFloat {
 from { transform: translateY(0px) rotate(var(--rotation, 0deg)); }
 to { transform: translateY(-2px) rotate(var(--rotation, 0deg)); }
}
/**
 * PREMIUM LOADING SPINNER
 */
#loading-spinner {
 position: fixed;
 inset: 0;
 background: var(--bg-color);
 display: flex;
 flex-direction: column;
 align-items: center;
 justify-content: center;
 z-index: 10000;
 transition: opacity 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
 opacity: 1;
 transform: scale(1);
}
#loading-spinner.hidden {
 opacity: 0;
 transform: scale(0.9);
 pointer-events: none;
}
.spinner-container {
 display: flex;
 flex-direction: column;
 align-items: center;
 gap: 20px;
 animation: fadeInGlow 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.spinner {
 width: 60px;
 height: 60px;
 border: 3px solid transparent;
 border-top: 3px solid var(--accent-color);
 border-radius: 50%;
 animation: premiumSpin 1s linear infinite;
 position: relative;
 box-shadow: 0 0 20px var(--glow-color);
}
.spinner::before {
 content: '';
 position: absolute;
 top: 50%;
 left: 50%;
 width: 20px;
 height: 20px;
 background: radial-gradient(circle, var(--accent-color) 0%, transparent 70%);
 border-radius: 50%;
 transform: translate(-50%, -50%);
 opacity: 0.3;
 animation: pulse 2s ease-in-out infinite alternate;
}
@keyframes premiumSpin {
 to { transform: rotate(360deg); }
}
@keyframes pulse {
 to { opacity: 0.8; transform: translate(-50%, -50%) scale(1.1); }
}
.loading-text {
 color: var(--text-color);
 font-size: 1rem;
 font-weight: 500;
 text-shadow: 0 1px var(--text-shadow);
}
/**
 * LOGO STYLES - Premium enhancements
 */
.logo {
 display: block;
 margin: 0 auto 15px;
 width: clamp(80px, 15vw, 120px);
 height: auto;
 border: 2px solid var(--border-color);
 border-radius: 12px;
 box-shadow: 0 4px 15px var(--premium-shadow), 0 0 0 1px var(--premium-border);
 transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
 animation: gentleFloat 3s ease-in-out infinite, logoGlow 2s ease-in-out infinite alternate;
 position: relative;
 overflow: hidden;
}
.logo::before {
 content: '';
 position: absolute;
 top: -50%;
 left: -50%;
 width: 200%;
 height: 200%;
 background: radial-gradient(circle, var(--shine-bg) 0%, transparent 70%);
 opacity: 0;
 transition: opacity 0.6s;
 animation: rotateSlow 20s linear infinite;
}
.logo:hover::before {
 opacity: 0.3;
}
.logo:hover {
 transform: translateY(-5px) scale(1.05);
 box-shadow: 0 8px 25px var(--shadow-color), 0 0 20px var(--glow-color), 0 0 0 1px var(--premium-border);
}
@keyframes gentleFloat {
 0%, 100% { transform: translateY(0px); }
 50% { transform: translateY(-3px); }
}
@keyframes logoGlow {
 from { filter: drop-shadow(0 0 5px var(--premium-glow)); }
 to { filter: drop-shadow(0 0 10px var(--premium-glow)); }
}
@keyframes rotateSlow {
 from { transform: rotate(0deg); }
 to { transform: rotate(360deg); }
}
/**
 * ELEMENTS
 */
/* links */
a {
 color: var(--link-color);
 text-decoration: none;
 position: relative;
 overflow: hidden;
 transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
a::after {
 content: '';
 position: absolute;
 bottom: 0;
 left: 50%;
 width: 0;
 height: 2px;
 background: linear-gradient(90deg, var(--link-hover), var(--accent-color));
 transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
 transform: translateX(-50%);
}
a:hover::after {
 width: 100%;
}
a:hover, a:focus, a:active {
 color: var(--link-hover);
 text-shadow: 0 0 5px var(--glow-color);
}
a:focus {
 outline: thin dotted var(--text-color);
}
/**
 * ENHANCED BUTTONS - Premium refinements
 */
.btn {
 padding: clamp(12px, 2.5vw, 14px) clamp(18px, 3.5vw, 22px);
 background: var(--button-bg);
 color: white;
 border: none;
 border-radius: 8px;
 font-size: clamp(14px, 2vw, 16px);
 font-weight: 600;
 cursor: pointer;
 transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
 display: inline-flex;
 align-items: center;
 gap: clamp(8px, 2vw, 10px);
 flex: 1;
 min-width: 140px;
 justify-content: center;
 white-space: nowrap;
 position: relative;
 overflow: hidden;
 box-shadow: 0 4px 15px rgba(0,0,0,0.1), 0 0 0 1px var(--premium-border);
}
.btn::before {
 content: '';
 position: absolute;
 top: 0;
 left: -100%;
 width: 100%;
 height: 100%;
 background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
 transition: left 0.6s;
}
.btn:hover::before {
 left: 100%;
}
.btn:hover {
 background: var(--button-hover);
 transform: translateY(-2px) scale(1.02);
 box-shadow: 0 6px 20px var(--shadow-color), 0 0 20px var(--glow-color), 0 0 0 1px var(--premium-border);
}
.btn:active {
 transform: translateY(-1px) scale(1.01);
}
.btn-group {
 display: flex;
 justify-content: center;
 gap: clamp(10px, 2.5vw, 12px);
 margin-top: 20px;
 flex-wrap: wrap;
}
/**
 * THEME TOGGLE BUTTON
 */
.theme-toggle {
 position: fixed;
 top: 20px;
 right: 20px;
 background: var(--button-bg);
 color: white;
 border: none;
 border-radius: 50%;
 width: 50px;
 height: 50px;
 cursor: pointer;
 transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
 display: flex;
 align-items: center;
 justify-content: center;
 box-shadow: 0 4px 15px var(--shadow-color), 0 0 0 1px var(--premium-border);
 z-index: 100;
 font-size: 1.2rem;
}
.theme-toggle:hover {
 background: var(--button-hover);
 transform: translateY(-2px) scale(1.05);
 box-shadow: 0 6px 20px var(--glow-color), 0 0 20px var(--glow-color);
}
.theme-toggle.dark-mode {
 background: var(--button-hover);
}
/**
 * JUMBOTRON - Premium depth
 */
.jumbotron {
 margin: clamp(30px, 8vw, 60px) 0;
 text-align: center;
 flex-shrink: 0;
}
.jumbotron h1 {
 color: inherit;
 font-family: inherit;
 font-size: clamp(2rem, 8vw, 4.5rem);
 font-weight: 700;
 line-height: 1;
 margin: 10px 0;
 cursor: default;
 text-rendering: optimizeLegibility;
 animation: slideInDownGlow 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
 position: relative;
 text-shadow: 0 2px 4px var(--premium-shadow);
}
@keyframes slideInDownGlow {
 from { opacity: 0; transform: translateY(-50px); filter: blur(10px); }
 to { opacity: 1; transform: translateY(0); filter: blur(0); }
}
.jumbotron h1::after {
 content: '';
 position: absolute;
 bottom: -10px;
 left: 50%;
 width: 0;
 height: 3px;
 background: linear-gradient(90deg, var(--accent-color), var(--link-color));
 transition: width 0.5s ease;
 transform: translateX(-50%);
 box-shadow: 0 2px 4px var(--premium-glow);
}
.jumbotron:hover h1::after {
 width: 60px;
}
.jumbotron .lead {
 font-size: clamp(1rem, 3vw, 1.3rem);
 font-weight: 300;
 line-height: 1.5;
 margin-bottom: 20px;
 animation: fadeInUpGlow 1s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s both;
 text-shadow: 0 1px 2px var(--premium-shadow);
}
@keyframes fadeInUpGlow {
 from { opacity: 0; transform: translateY(30px); filter: blur(5px); }
 to { opacity: 1; transform: translateY(0); filter: blur(0); }
}
/**
 * WELCOME CARD - Premium pulse and depth
 */
.welcome-card {
 background: linear-gradient(135deg, var(--card-bg), rgba(255,255,255,0.8));
 backdrop-filter: blur(10px);
 border: 1px solid var(--border-color);
 border-radius: 16px;
 padding: clamp(20px, 5vw, 30px);
 margin-bottom: 30px;
 text-align: center;
 position: relative;
 overflow: hidden;
 animation: pulseGlow 3s cubic-bezier(0.25, 0.46, 0.45, 0.94) infinite;
 flex-shrink: 0;
 box-shadow: 0 10px 40px var(--shadow-color), 0 0 0 1px var(--premium-border);
}
@keyframes pulseGlow {
 0% { box-shadow: 0 0 0 0 var(--shadow-color), 0 10px 40px var(--shadow-color), 0 0 0 1px var(--premium-border); }
 70% { box-shadow: 0 0 0 20px rgba(39, 174, 96, 0), 0 10px 40px var(--shadow-color), 0 0 0 1px var(--premium-border); }
 100% { box-shadow: 0 0 0 0 rgba(39, 174, 96, 0), 0 10px 40px var(--shadow-color), 0 0 0 1px var(--premium-border); }
}
.welcome-card::before {
 content: '';
 position: absolute;
 top: -50%;
 left: -50%;
 width: 200%;
 height: 200%;
 background: radial-gradient(circle, var(--shine-bg) 0%, transparent 70%);
 opacity: 0;
 transition: opacity 0.6s;
 animation: rotateSlow 15s linear infinite;
}
.welcome-card:hover::before {
 opacity: 1;
}
@keyframes rotateSlow {
 from { transform: rotate(0deg); }
 to { transform: rotate(360deg); }
}
.welcome-card h3 {
 color: var(--accent-color);
 font-size: clamp(1.5rem, 4vw, 1.75rem);
 margin-bottom: 15px;
 animation: bounceInGlow 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
 font-weight: 700;
 text-shadow: 0 2px 4px var(--premium-shadow);
}
@keyframes bounceInGlow {
 0% { transform: scale(0.3); opacity: 0; filter: blur(10px); }
 50% { transform: scale(1.05); filter: blur(0); }
 70% { transform: scale(0.9); }
 100% { transform: scale(1); opacity: 1; }
}
.welcome-card p {
 font-size: clamp(14px, 2.5vw, 16px);
 line-height: 1.6;
 animation: fadeInUpGlow 1s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.4s both;
 opacity: 0.9;
 text-shadow: 0 1px 2px var(--premium-shadow);
}
/**
 * MEDIA QUERIES
 */
@media only screen and (max-width: 768px) {
 .btn-group {
 justify-content: stretch;
 }
 .btn {
 flex: 1 1 100%;
 min-width: auto;
 }
}
@media only screen and (max-width: 600px) {
 body {
 padding: clamp(5px, 2vw, 10px) 0;
 }
 .jumbotron {
 margin: clamp(20px, 5vw, 30px) 0;
 }
 .jumbotron .lead {
 font-size: clamp(0.9rem, 3vw, 1.1rem);
 }
 .container {
 padding: 0 clamp(5px, 2vw, 10px);
 gap: 15px;
 }
 .welcome-card {
 padding: clamp(15px, 4vw, 20px);
 }
 .welcome-card h3 {
 font-size: clamp(1.25rem, 4vw, 1.5rem);
 }
}
@media (max-width: 480px) {
 .jumbotron h1 {
 font-size: clamp(1.75rem, 7vw, 2.5rem);
 }
 .welcome-card p {
 font-size: clamp(13px, 2vw, 14px);
 }
}
footer {
 text-align: center;
 padding: clamp(10px, 2vw, 15px);
 font-size: clamp(12px, 2vw, 0.85rem);
 color: var(--footer-color);
 font-weight: 600;
 margin-top: auto;
 transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
 flex-shrink: 0;
 text-shadow: 0 1px 2px var(--premium-shadow);
}
footer:hover {
 transform: translateY(-2px);
 text-shadow: 0 0 10px var(--glow-color);
}
footer a {
 color: inherit;
 transition: color 0.3s ease;
}
footer a:hover {
 color: var(--accent-color);
}
@media (max-width: 480px) {
 footer {
 padding: clamp(8px, 2vw, 10px);
 }
}
/* Donation card styles */
.donation-card {
 background: linear-gradient(135deg, var(--card-bg), rgba(255,255,255,0.8));
 backdrop-filter: blur(10px);
 border: 1px solid var(--border-color);
 border-radius: 16px;
 padding: clamp(20px, 5vw, 30px);
 margin-bottom: 30px;
 text-align: center;
 position: relative;
 overflow: hidden;
 animation: pulseGlow 3s cubic-bezier(0.25, 0.46, 0.45, 0.94) infinite;
 box-shadow: 0 10px 40px var(--shadow-color), 0 0 0 1px var(--premium-border);
}
.donation-card .bank-logo {
 width: 120px;
 height: auto;
 margin-bottom: 20px;
 border-radius: 8px;
 box-shadow: 0 4px 15px var(--premium-shadow);
}
.donation-card .detail {
 margin: 15px 0;
 font-size: clamp(14px, 2vw, 16px);
 font-weight: 500;
 color: var(--text-color);
}
.donation-card .detail strong {
 color: var(--accent-color);
}