/* ==========================================
   СОВРЕМЕННЫЙ ТЕМНО-СИНИЙ ДИЗАЙН
   с анимированным фоном и эффектами
   ========================================== */

:root {
    --primary: #0ea5e9;
    --secondary: #3b82f6;
    --dark: #0f172a;
    --darker: #020617;
    --light: #38bdf8;
    --accent: #22d3ee;
    --text: #f1f5f9;
    --text-secondary: #94a3b8;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--darker);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ==========================================
   АНИМИРОВАННЫЙ ФОН
   ========================================== */

#particles-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background: linear-gradient(135deg, #020617 0%, #0f172a 50%, #1e293b 100%);
}

/* Анимированные градиентные круги */
.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    bottom: -10%;
    right: -10%;
    animation-delay: 5s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, var(--secondary) 0%, transparent 70%);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    25% { transform: translate(50px, -50px) scale(1.1); }
    50% { transform: translate(-30px, 30px) scale(0.9); }
    75% { transform: translate(30px, 50px) scale(1.05); }
}

/* ==========================================
   СЕТКА ФОНА
   ========================================== */

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(var(--primary)33 1px, transparent 1px),
        linear-gradient(90deg, var(--primary)33 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.05;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { background-position: 0 0; }
    100% { background-position: 50px 50px; }
}

/* ==========================================
   КОНТЕЙНЕР
   ========================================== */

.container {
    position: relative;
    z-index: 1;
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

/* ==========================================
   КАРТОЧКА ИНСТРУМЕНТА
   ========================================== */

.tool-card {
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 24px;
    padding: 3rem;
    width: 100%;
    box-shadow: 
        0 20px 60px rgba(14, 165, 233, 0.1),
        0 0 100px rgba(59, 130, 246, 0.05),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
    overflow: hidden;
    animation: cardAppear 0.6s ease-out;
}

@keyframes cardAppear {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Свечение на карточке при наведении */
.tool-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(14, 165, 233, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s;
}

.tool-card:hover::before {
    opacity: 1;
}

/* ==========================================
   ЗАГОЛОВОК
   ========================================== */

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--light) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-align: center;
    letter-spacing: -1px;
    animation: titleGlow 3s ease-in-out infinite;
}

@keyframes titleGlow {
    0%, 100% { filter: drop-shadow(0 0 20px rgba(14, 165, 233, 0.3)); }
    50% { filter: drop-shadow(0 0 40px rgba(34, 211, 238, 0.5)); }
}

/* ==========================================
   ОПИСАНИЕ
   ========================================== */

.tool-description {
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.6;
    margin-bottom: 2rem;
    font-size: 1rem;
}

/* ==========================================
   ФОРМА
   ========================================== */

.tool-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}



.input-container {
    position: relative;
}







input[type="text"]::placeholder,
textarea::placeholder {
    color: var(--text-secondary);
}

/* Анимация при фокусе */
input[type="text"]:focus::placeholder,
textarea:focus::placeholder {
    transform: translateY(-2px);
    transition: transform 0.3s;
}


/* ==========================================
   ПОЛЕ ВВОДА (обновлено)
   ========================================== */

.input-container {
    position: relative;
}

input[type="text"],
textarea {
    width: 100%;
    padding: 1.2rem 1.5rem;
    background: rgba(15, 23, 42, 0.8);
    border: 2px solid rgba(56, 189, 248, 0.3);
    border-radius: 16px;
    color: var(--text);
    font-size: 1rem;
    font-family: 'Inter', 'Segoe UI', sans-serif;
    transition: all 0.3s ease;
    outline: none;
    box-shadow: 
        0 4px 20px rgba(0, 0, 0, 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

textarea {
    min-height: 140px;
    resize: vertical;
    line-height: 1.6;
}

input[type="text"]:focus,
textarea:focus {
    border-color: var(--primary);
    background: rgba(15, 23, 42, 0.95);
    box-shadow: 
        0 0 0 4px rgba(14, 165, 233, 0.15),
        0 0 40px rgba(14, 165, 233, 0.3),
        0 8px 30px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

input[type="text"]::placeholder,
textarea::placeholder {
    color: rgba(148, 163, 184, 0.6);
    font-weight: 400;
}

/* Эффект свечения при фокусе */
input[type="text"]:focus::placeholder,
textarea:focus::placeholder {
    color: rgba(148, 163, 184, 0.8);
    transform: translateY(-1px);
    transition: all 0.3s;
}

/* Анимация при вводе текста */
input[type="text"]:not(:placeholder-shown),
textarea:not(:placeholder-shown) {
    border-color: rgba(56, 189, 248, 0.5);
    background: rgba(15, 23, 42, 0.9);
}

/* ==========================================
   КНОПКА
   ========================================== */

button {
    padding: 1.2rem 2.5rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    border: none;
    border-radius: 16px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    box-shadow: 
        0 10px 30px rgba(14, 165, 233, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.1) inset;
}

/* Эффект свечения кнопки */
button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

button:hover::before {
    left: 100%;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 15px 40px rgba(14, 165, 233, 0.4),
        0 0 60px rgba(59, 130, 246, 0.3);
}

button:active {
    transform: translateY(0);
}

/* ==========================================
   СООБЩЕНИЯ (успех/ошибка)
   ========================================== */

.message {
    padding: 1rem 1.5rem;
    border-radius: 12px;
    margin-top: 1rem;
    animation: messageSlide 0.3s ease-out;
    font-weight: 500;
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    color: #86efac;
}

.message.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #fca5a5;
}

/* ==========================================
   ИНДИКАТОР ЗАГРУЗКИ
   ========================================== */

.loading {
    display: none;
    text-align: center;
    margin-top: 1rem;
}

.loading.active {
    display: block;
}

.spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto 1rem;
    border: 4px solid rgba(56, 189, 248, 0.2);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ==========================================
   АДАПТИВНОСТЬ
   ========================================== */

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }
    
    .tool-card {
        padding: 2rem 1.5rem;
        border-radius: 20px;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    button {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
}

/* ==========================================
   ДОПОЛНИТЕЛЬНЫЕ ЭФФЕКТЫ
   ========================================== */

/* Пульсация на активных элементах */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Плавное появление страницы */
@keyframes pageLoad {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

body {
    animation: pageLoad 0.5s ease-out;
}

/* Свечение текста при наведении на карточку */
.tool-card:hover h1 {
    filter: drop-shadow(0 0 30px rgba(34, 211, 238, 0.6));
}