:root {
    --primary-orange: #ff7849;
    --text-color: #2c3e50;
    --background-color: #ffffff;
    --input-border: #e2e8f0;
    --input-focus: #cbd5e1;
    --error-color: #dc2626;
}

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

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.6;
}

.container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.content {
    max-width: 400px;
    width: 100%;
    text-align: center;
    padding: 2rem;
}

.mobile-info {
    background-color: #f8fafc;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.otp-sent-text {
    text-align: center;
    color: #64748b;
    font-size: 0.95rem;
}

.mobile-number-row {
    position: relative;
    text-align: center;
    padding: 0 3rem;
}

.mobile-number {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-orange);
}

.change-button {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #64748b;
    cursor: pointer;
    font-size: 0.85rem;
    padding: 0.25rem 0.5rem;
    transition: all 0.2s;
    white-space: nowrap;
    text-decoration: underline;
}

.change-button:hover {
    color: var(--primary-orange);
}

.verify-form {
    text-align: left;
}

.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.input-wrapper {
    position: relative;
    margin-bottom: 0.5rem;
}

.input-field {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--input-border);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.2s;
    margin-bottom: 0.25rem;
}

.input-field:focus {
    outline: none;
    border-color: var(--input-focus);
}

.floating-label {
    position: absolute;
    left: 1rem;
    top: 0.75rem;
    font-size: 1rem;
    color: #94a3b8;
    pointer-events: none;
    transition: all 0.3s ease;
    background-color: var(--background-color);
    padding: 0 0.25rem;
    transform-origin: left top;
}

.input-field:focus+.floating-label,
.input-field:not(:placeholder-shown)+.floating-label {
    top: -0.5rem;
    left: 0.75rem;
    font-size: 0.75rem;
    color: var(--primary-orange);
    font-weight: 500;
    transform: scale(1);
}

.input-field:focus+.floating-label {
    color: var(--primary-orange);
}

.input-field[readonly]+.floating-label {
    color: #6b7280;
}

.input-field[readonly]:focus+.floating-label,
.input-field[readonly]:not(:placeholder-shown)+.floating-label {
    color: #6b7280;
}

.error-message {
    display: block;
    color: var(--error-color);
    font-size: 0.875rem;
    text-align: right;
}

.verify-button {
    width: 100%;
    background-color: var(--primary-orange);
    color: white;
    border: none;
    padding: 1rem;
    font-size: 1.1rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
    margin: 2rem 0;
}

.verify-button:hover {
    background-color: #e66a3e;
}

.resend-link {
    display: block;
    text-align: center;
    color: var(--primary-orange);
    text-decoration: none;
    font-size: 0.95rem;
    margin-top: 1rem;
    transition: all 0.2s;
    cursor: pointer;
}

.resend-link.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.resend-link:not(.disabled):hover {
    color: #e66a3e;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .content {
        padding: 1.5rem;
    }

    .mobile-info {
        padding: 1rem;
    }

    .mobile-number-row {
        padding: 0;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }

    .change-button {
        position: static;
        transform: none;
    }

    .input-field {
        font-size: 16px;
    }
}