* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Inter", system-ui, sans-serif;
}

body {
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a, #020617);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Container */
.container {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

/* Card */
.auth-card {
    background: #020617;
    padding: 32px;
    border-radius: 16px;
    box-shadow: 0 25px 60px rgba(0,0,0,.5);
    color: #e5e7eb;
}

/* Header */
.brand {
    text-align: center;
    color: #38bdf8;
    margin-bottom: 6px;
}

.subtitle {
    text-align: center;
    color: #94a3b8;
    margin-bottom: 24px;
    font-size: 14px;
}

/* Inputs */
.input-group {
    margin-bottom: 16px;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #1e293b;
    background: #020617;
    color: #e5e7eb;
}

.input-group input::placeholder {
    color: #64748b;
}

.input-group input:focus {
    outline: none;
    border-color: #38bdf8;
}

/* File upload */
.file-upload label {
    display: block;
    margin-bottom: 6px;
    font-size: 13px;
    color: #94a3b8;
}

.file-upload input {
    padding: 10px;
    cursor: pointer;
}

/* Button */
.submit-btn {
    width: 100%;
    padding: 12px;
    margin-top: 10px;
    background: #38bdf8;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: transform .2s ease, box-shadow .2s ease;
}

.submit-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 20px rgba(56,189,248,.4);
}

/* Link */
.sign-link {
    display: inline-block;
    margin-bottom: 20px;
    color: #94a3b8;
    text-decoration: none;
    font-size: 14px;
}

.sign-link:hover {
    color: #38bdf8;
}

.sa{
    padding: 10px;
    text-align: center;
}

.sa button{
    padding: 3px;
    color: transparent;
    background: none;
    border: none;
    border-left: 1px solid #1e293b;
    border-right: 1px solid #1e293b;
    font-size: 9px;
}