:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --text-color: #f8fafc;
    --accent-color: #38bdf8;
    --accent-hover: #0ea5e9;
    --input-bg: #334155;
    --border-color: #475569;
    --success-color: #22c55e;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    justify-content: center;
    min-height: 100vh;
    padding: 2rem;
}

.container {
    width: 100%;
    max-width: 800px;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.8s ease-out;
}

header h1 {
    font-size: 3rem;
    font-weight: 600;
    background: linear-gradient(to right, var(--accent-color), #a855f7);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

header p {
    color: #94a3b8;
    font-size: 1.1rem;
}

section {
    margin-bottom: 3rem;
    animation: fadeInUp 0.8s ease-out;
}

h2 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--accent-color);
    padding-left: 1rem;
}

/* Contact Form */
.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 600px) {
    .contact-form {
        grid-template-columns: 1fr;
    }
}

.input-group {
    position: relative;
    margin-bottom: 1rem;
}

input {
    width: 100%;
    padding: 1rem;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: white;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
}

input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(56, 189, 248, 0.2);
}

label {
    position: absolute;
    left: 1rem;
    top: 1rem;
    color: #94a3b8;
    pointer-events: none;
    transition: 0.3s ease all;
}

input:focus ~ label,
input:not(:placeholder-shown) ~ label {
    top: -0.6rem;
    left: 0.8rem;
    font-size: 0.8rem;
    background: var(--bg-color);
    padding: 0 0.4rem;
    color: var(--accent-color);
}

/* Items Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: transform 0.3s, border-color 0.3s, background 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    background: #263345;
}

.card.selected {
    border-color: var(--accent-color);
    background: rgba(56, 189, 248, 0.1);
}

.card .icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.card p {
    font-size: 0.9rem;
    color: #94a3b8;
}

/* Button */
button {
    width: 100%;
    padding: 1.2rem;
    background: linear-gradient(to right, var(--accent-color), #0284c7);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

button:hover {
    transform: scale(1.02);
    box-shadow: 0 4px 15px rgba(56, 189, 248, 0.4);
}

button:active {
    transform: scale(0.98);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--success-color);
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s, transform 0.3s;
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.error {
    background: #ef4444;
}

footer {
    text-align: center;
    margin-top: 4rem;
    color: #64748b;
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

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