/* ========================================
   DOTA2AI - Professional Design
   ======================================== */

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

:root {
    --color-radiant: #92E24A;
    --color-dire: #C23C2A;
    --color-gold: #FFC700;
    --color-blue: #4A9EFF;
    --color-dark: #0A0E17;
    --color-darker: #050812;
    --color-card: #1A1F2E;
    --color-border: #2A3142;
    --color-text: #E8E6E3;
    --color-text-dim: #A8A6A3;
    
    --font-display: 'Cinzel Decorative', serif;
    --font-body: 'Exo 2', sans-serif;
    
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.7);
    --shadow-xl: 0 30px 90px rgba(0, 0, 0, 0.9);
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-darker);
    overflow-x: hidden;
    min-height: 100vh;
}

/* ========================================
   ANIMATED BACKGROUND
   ======================================== */

.bg-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    overflow: hidden;
}

.bg-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.bg-layer-1 {
    background: radial-gradient(ellipse at 20% 30%, rgba(146, 226, 74, 0.15) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 70%, rgba(194, 60, 42, 0.15) 0%, transparent 50%),
                linear-gradient(180deg, #050812 0%, #0A0E17 50%, #0F1419 100%);
}

.bg-layer-2 {
    background-image: 
        repeating-linear-gradient(90deg, 
            transparent 0px, 
            transparent 100px, 
            rgba(255, 199, 0, 0.02) 100px, 
            rgba(255, 199, 0, 0.02) 101px
        ),
        repeating-linear-gradient(0deg, 
            transparent 0px, 
            transparent 100px, 
            rgba(255, 199, 0, 0.02) 100px, 
            rgba(255, 199, 0, 0.02) 101px
        );
    animation: grid-move 20s linear infinite;
}

@keyframes grid-move {
    0% { transform: translate(0, 0); }
    100% { transform: translate(100px, 100px); }
}

.bg-layer-3 {
    background: 
        radial-gradient(circle at 10% 20%, rgba(146, 226, 74, 0.1) 0%, transparent 30%),
        radial-gradient(circle at 90% 80%, rgba(194, 60, 42, 0.1) 0%, transparent 30%),
        radial-gradient(circle at 50% 50%, rgba(255, 199, 0, 0.05) 0%, transparent 40%);
    animation: glow-pulse 8s ease-in-out infinite;
}

@keyframes glow-pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

.particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

/* ========================================
   MAIN LAYOUT
   ======================================== */

.main-wrapper {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}

/* ========================================
   HEADER
   ======================================== */

.header {
    position: relative;
    margin-bottom: 30px;
    overflow: hidden;
    border-radius: 20px;
}

.header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26, 31, 46, 0.95) 0%, rgba(26, 31, 46, 0.85) 100%);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 199, 0, 0.2);
    box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.header-bg::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 199, 0, 0.1), transparent);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 200%; }
}

.header-content {
    position: relative;
    padding: 30px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-wrapper {
    position: relative;
}

.logo-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 199, 0, 0.3) 0%, transparent 70%);
    filter: blur(40px);
    animation: logo-pulse 4s ease-in-out infinite;
}

@keyframes logo-pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.8; }
}

.logo {
    font-family: var(--font-display);
    font-size: 56px;
    font-weight: 900;
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 3px;
    line-height: 1;
    position: relative;
    display: inline-block;
}

.logo-text {
    background: linear-gradient(135deg, var(--color-gold) 0%, #FFD700 50%, var(--color-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(255, 199, 0, 0.5);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.8));
}

.logo-ai {
    background: linear-gradient(135deg, var(--color-radiant) 0%, var(--color-blue) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(146, 226, 74, 0.5);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.8));
}

.tagline {
    font-size: 14px;
    color: var(--color-text-dim);
    margin-top: 8px;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
}

.btn-reset {
    padding: 12px 24px;
    background: linear-gradient(135deg, rgba(194, 60, 42, 0.8) 0%, rgba(194, 60, 42, 0.6) 100%);
    border: 1px solid rgba(194, 60, 42, 0.5);
    border-radius: 12px;
    color: white;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(194, 60, 42, 0.3);
}

.btn-reset:hover {
    background: linear-gradient(135deg, rgba(194, 60, 42, 1) 0%, rgba(194, 60, 42, 0.8) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(194, 60, 42, 0.5);
}

/* ========================================
   CHAT CONTAINER
   ======================================== */

.chat-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.chat-container {
    flex: 1;
    background: linear-gradient(135deg, rgba(26, 31, 46, 0.95) 0%, rgba(26, 31, 46, 0.85) 100%);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 199, 0, 0.15);
    border-radius: 20px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
}

.chat-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 199, 0, 0.5), transparent);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding-right: 10px;
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: rgba(42, 49, 66, 0.3);
    border-radius: 10px;
}

.chat-messages::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--color-gold) 0%, var(--color-dire) 100%);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, #FFD700 0%, #d44d39 100%);
}

/* ========================================
   MESSAGES
   ======================================== */

.message {
    display: flex;
    gap: 15px;
    animation: fadeSlideIn 0.5s ease-out;
}

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

.user-message {
    flex-direction: row-reverse;
}

.msg-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    position: relative;
}

.ai-message .msg-avatar {
    background: linear-gradient(135deg, rgba(146, 226, 74, 0.2) 0%, rgba(74, 158, 255, 0.2) 100%);
    border: 2px solid var(--color-radiant);
    color: var(--color-radiant);
    box-shadow: 0 0 20px rgba(146, 226, 74, 0.4);
}

.user-message .msg-avatar {
    background: linear-gradient(135deg, rgba(255, 199, 0, 0.2) 0%, rgba(194, 60, 42, 0.2) 100%);
    border: 2px solid var(--color-gold);
    color: var(--color-gold);
    box-shadow: 0 0 20px rgba(255, 199, 0, 0.4);
}

.user-message .msg-avatar::before {
    content: '👤';
    font-size: 24px;
}

.msg-bubble {
    max-width: 70%;
    background: linear-gradient(135deg, rgba(42, 49, 66, 0.6) 0%, rgba(42, 49, 66, 0.4) 100%);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 199, 0, 0.2);
    border-radius: 16px;
    padding: 16px 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.user-message .msg-bubble {
    background: linear-gradient(135deg, rgba(255, 199, 0, 0.15) 0%, rgba(194, 60, 42, 0.15) 100%);
    border-color: rgba(255, 199, 0, 0.3);
}

.welcome-msg .msg-bubble {
    background: linear-gradient(135deg, rgba(146, 226, 74, 0.1) 0%, rgba(74, 158, 255, 0.1) 100%);
    border: 2px solid rgba(146, 226, 74, 0.3);
    box-shadow: 0 0 30px rgba(146, 226, 74, 0.2);
}

.msg-author {
    font-weight: 700;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    color: var(--color-radiant);
}

.user-message .msg-author {
    color: var(--color-gold);
    text-align: right;
}

.msg-text {
    line-height: 1.6;
    font-size: 15px;
    color: var(--color-text);
}

/* ========================================
   INPUT AREA
   ======================================== */

.chat-input-wrapper {
    position: relative;
}

.typing-indicator {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    margin-bottom: 12px;
    background: rgba(146, 226, 74, 0.1);
    border: 1px solid rgba(146, 226, 74, 0.2);
    border-radius: 12px;
}

.typing-indicator.active {
    display: flex;
}

.typing-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-radiant);
    animation: typing-bounce 1.4s infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing-bounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-10px); }
}

.typing-text {
    font-size: 13px;
    color: var(--color-radiant);
    font-weight: 600;
}

.chat-form {
    position: relative;
}

.input-container {
    position: relative;
    background: linear-gradient(135deg, rgba(42, 49, 66, 0.6) 0%, rgba(42, 49, 66, 0.4) 100%);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255, 199, 0, 0.2);
    border-radius: 16px;
    padding: 16px 70px 16px 20px;
    transition: all 0.3s ease;
}

.input-container:focus-within {
    border-color: var(--color-gold);
    box-shadow: 0 0 30px rgba(255, 199, 0, 0.3);
}

.chat-input {
    width: 100%;
    background: none;
    border: none;
    outline: none;
    color: var(--color-text);
    font-family: var(--font-body);
    font-size: 15px;
    resize: none;
    max-height: 150px;
    line-height: 1.5;
}

.chat-input::placeholder {
    color: var(--color-text-dim);
}

.btn-send {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    border-radius: 12px;
    border: none;
    background: linear-gradient(135deg, var(--color-gold) 0%, #FFD700 100%);
    color: var(--color-dark);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255, 199, 0, 0.4);
}

.btn-send:hover:not(:disabled) {
    transform: translateY(-50%) scale(1.05);
    box-shadow: 0 6px 25px rgba(255, 199, 0, 0.6);
}

.btn-send:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-send svg {
    transition: transform 0.3s ease;
}

.btn-send:hover:not(:disabled) svg {
    transform: translateX(2px);
}

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

@media (max-width: 768px) {
    .main-wrapper {
        padding: 15px;
    }
    
    .header-content {
        flex-direction: column;
        gap: 20px;
        padding: 25px;
        text-align: center;
    }
    
    .logo {
        font-size: 42px;
    }
    
    .chat-container {
        padding: 20px;
    }
    
    .msg-bubble {
        max-width: 85%;
    }
    
    .btn-reset {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 36px;
    }
    
    .msg-bubble {
        max-width: 90%;
    }
    
    .input-container {
        padding: 12px 60px 12px 16px;
    }
}

/* ========================================
   PARTICLES ANIMATION
   ======================================== */

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0.3; }
    50% { transform: translateY(-20px) translateX(10px); opacity: 0.6; }
}