:root {
    --primary-bg: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --accent-blue: #3b82f6;
    --accent-hover: #2563eb;
    --border-color: #e2e8f0;
    --input-bg: #ffffff;
    --success-color: #22c55e;
    --error-color: #ef4444;
    --success-bg: rgba(34, 197, 94, 0.1);
    --error-bg: rgba(220, 38, 38, 0.1);
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --button-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--primary-bg);
    background-image: 
        radial-gradient(at 47% 33%, hsl(214.93, 100%, 97%) 0, transparent 59%), 
        radial-gradient(at 82% 65%, hsl(224.55, 100%, 97%) 0, transparent 55%);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

.container {
    min-height: 100vh;
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    max-width: 32rem;
    margin: 0 auto;
}

.card {
    background-color: var(--card-bg);
    border-radius: 1.5rem;
    padding: 2.5rem;
    width: 100%;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.lang-switch {
    text-align: right;
    margin-bottom: 2.5rem;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.5rem;
}

.lang-switch a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    padding: 0.375rem 0.75rem;
    border-radius: 0.5rem;
    transition: all 0.2s;
}

.lang-switch a.active {
    background-color: var(--accent-blue);
    color: white;
}

.lang-switch a:not(.active):hover {
    background-color: var(--border-color);
}

.header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo-wrapper {
    width: 4rem;
    height: 4rem;
    background-color: rgba(59, 130, 246, 0.1);
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.logo-wrapper svg {
    width: 2rem;
    height: 2rem;
    color: var(--accent-blue);
}

h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

form {
    margin-bottom: 2.5rem;
}

.input-group {
    margin-bottom: 1.5rem;
}

input[type="text"] {
    width: 100%;
    padding: 0.875rem 1rem;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.2s;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.remember-checkbox {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.remember-checkbox input[type="checkbox"] {
    width: 1.25rem;
    height: 1.25rem;
    border-radius: 0.375rem;
    border: 2px solid var(--border-color);
    cursor: pointer;
}

.remember-checkbox label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
}

.button-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

button {
    width: 100%;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

button[type="submit"] {
    background-color: var(--accent-blue);
    color: white;
    box-shadow: var(--button-shadow);
}

button[type="submit"]:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.help-btn {
    background-color: var(--primary-bg);
    color: var(--text-secondary);
}

.help-btn:hover {
    background-color: var(--border-color);
}

.contact-buttons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-top: 2rem;
}

.contact-btn, .renew-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    padding: 0.75rem 1rem;
    border-radius: 0.75rem;
    background-color: var(--primary-bg);
    transition: all 0.2s;
    font-size: 0.875rem;
    font-weight: 500;
}

.contact-btn:hover, .renew-btn:hover {
    background-color: var(--border-color);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-content {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 1.5rem;
    position: relative;
    max-width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--card-shadow);
}

.close-btn {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.5rem;
    width: auto;
    margin: 0;
    border-radius: 0.5rem;
}

.close-btn:hover {
    background-color: var(--primary-bg);
}

.spinner-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.spinner {
    width: 3rem;
    height: 3rem;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

#orderIdError {
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }

    .card {
        padding: 1.5rem;
    }

    .contact-buttons {
        grid-template-columns: 1fr;
    }
}